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tinyproxy — security advisory

Type: advisorySources: OSVAdvisory ID: UBUNTU-CVE-2025-63938

Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.

Products
tinyproxy
Affected versions
1.10.0-2, 1.10.0-4, 1.10.0-4ubuntu0.1, 1.10.0-4ubuntu0.2, 1.10.0-5, 1.11.0-1, 1.11.0-1ubuntu0.1~esm1, 1.11.0-1ubuntu0.1~esm2, 1.11.1-2.1, 1.11.1-3, 1.11.1-3ubuntu0.1, 1.11.2-1, 1.11.2-1build1, 1.11.3-1, 1.8.3-3ubuntu1, 1.8.3-3ubuntu14.04.1~esm1, 1.8.3-3ubuntu14.04.1~esm2, 1.8.3-3ubuntu14.04.1~esm3, 1.8.3-3ubuntu16.04.1~esm1, 1.8.3-3ubuntu16.04.1~esm2, 1.8.3-3ubuntu16.04.1~esm3, 1.8.4-2, 1.8.4-3, 1.8.4-5, 1.8.4-5ubuntu0.1~esm1, 1.8.4-5ubuntu0.1~esm2, 1.8.4-5ubuntu0.1~esm3
Fixed versions
Not specified
CVEs
CVE-2025-63938
Confirmed fixed CVEs
Not specified
Updated in this feed
31 Oct 2026, 01:34 UTC · Revision 1

Source evidence

UBUNTU-CVE-2025-63938

core-osv · Original source

Published 26 Nov 2025, 17:15 UTC

Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.

osv:UBUNTU-CVE-2025-63938

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

tinyproxy

Fixed versions: Not specified

Complete source record
{
  "id": "d969bd260cf12feebd1c114d0ce822cc6f45ceff4fc30733625496d4c2c77d31",
  "url": "https://osv.dev/vulnerability/UBUNTU-CVE-2025-63938",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "UBUNTU-CVE-2025-63938",
    "summary": "Tinyproxy through 1.11.2 contains an integer overflow vulnerability in the strip_return_port() function within src/reqs.c.",
    "evidence": "osv:UBUNTU-CVE-2025-63938",
    "products": [
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/0/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.8.3-3ubuntu1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.8.3-3ubuntu14.04.1~esm1",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.8.3-3ubuntu14.04.1~esm2",
            "evidence": "/affected/0/versions"
          },
          {
            "value": "1.8.3-3ubuntu14.04.1~esm3",
            "evidence": "/affected/0/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/1/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.8.3-3ubuntu1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.8.3-3ubuntu16.04.1~esm1",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.8.3-3ubuntu16.04.1~esm2",
            "evidence": "/affected/1/versions"
          },
          {
            "value": "1.8.3-3ubuntu16.04.1~esm3",
            "evidence": "/affected/1/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/2/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.8.4-2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.8.4-3",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.8.4-5",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.8.4-5ubuntu0.1~esm1",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.8.4-5ubuntu0.1~esm2",
            "evidence": "/affected/2/versions"
          },
          {
            "value": "1.8.4-5ubuntu0.1~esm3",
            "evidence": "/affected/2/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/3/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.10.0-2",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.10.0-4",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.10.0-4ubuntu0.1",
            "evidence": "/affected/3/versions"
          },
          {
            "value": "1.10.0-4ubuntu0.2",
            "evidence": "/affected/3/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/4/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.10.0-5",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.11.0-1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.11.0-1ubuntu0.1~esm1",
            "evidence": "/affected/4/versions"
          },
          {
            "value": "1.11.0-1ubuntu0.1~esm2",
            "evidence": "/affected/4/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/5/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.11.1-2.1",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.11.1-3",
            "evidence": "/affected/5/versions"
          },
          {
            "value": "1.11.1-3ubuntu0.1",
            "evidence": "/affected/5/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/6/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.11.2-1",
            "evidence": "/affected/6/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/7/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.11.3-1",
            "evidence": "/affected/7/versions"
          }
        ]
      },
      {
        "name": {
          "value": "tinyproxy",
          "evidence": "/affected/8/package/name"
        },
        "prerequisites": [],
        "fixed_versions": [],
        "affected_versions": [
          {
            "value": "1.11.2-1",
            "evidence": "/affected/8/versions"
          },
          {
            "value": "1.11.2-1build1",
            "evidence": "/affected/8/versions"
          },
          {
            "value": "1.11.3-1",
            "evidence": "/affected/8/versions"
          }
        ]
      }
    ],
    "severity": "medium",
    "structured": {
      "id": "UBUNTU-CVE-2025-63938",
      "aliases": [
        "UBUNTU-CVE-2025-63938"
      ],
      "metrics": [
        {
          "type": "CVSS_V3",
          "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N"
        },
        {
          "type": "Ubuntu",
          "score": "medium"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-infra-legacy%2Ftrusty",
            "ecosystem": "Ubuntu:Pro:14.04:LTS"
          },
          "versions": [
            "1.8.3-3ubuntu1",
            "1.8.3-3ubuntu14.04.1~esm1",
            "1.8.3-3ubuntu14.04.1~esm2",
            "1.8.3-3ubuntu14.04.1~esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.8.3-3ubuntu14.04.1~esm3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fxenial",
            "ecosystem": "Ubuntu:Pro:16.04:LTS"
          },
          "versions": [
            "1.8.3-3ubuntu1",
            "1.8.3-3ubuntu16.04.1~esm1",
            "1.8.3-3ubuntu16.04.1~esm2",
            "1.8.3-3ubuntu16.04.1~esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.8.3-3ubuntu16.04.1~esm3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fbionic",
            "ecosystem": "Ubuntu:Pro:18.04:LTS"
          },
          "versions": [
            "1.8.4-2",
            "1.8.4-3",
            "1.8.4-5",
            "1.8.4-5ubuntu0.1~esm1",
            "1.8.4-5ubuntu0.1~esm2",
            "1.8.4-5ubuntu0.1~esm3"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.8.4-5ubuntu0.1~esm3"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.8.4-5ubuntu0.1~esm3"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=focal",
            "ecosystem": "Ubuntu:20.04:LTS"
          },
          "versions": [
            "1.10.0-2",
            "1.10.0-4",
            "1.10.0-4ubuntu0.1",
            "1.10.0-4ubuntu0.2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.10.0-4ubuntu0.2"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.10.0-4ubuntu0.2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=esm-apps%2Fjammy",
            "ecosystem": "Ubuntu:Pro:22.04:LTS"
          },
          "versions": [
            "1.10.0-5",
            "1.11.0-1",
            "1.11.0-1ubuntu0.1~esm1",
            "1.11.0-1ubuntu0.1~esm2"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.11.0-1ubuntu0.1~esm2"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.11.0-1ubuntu0.1~esm2"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=noble",
            "ecosystem": "Ubuntu:24.04:LTS"
          },
          "versions": [
            "1.11.1-2.1",
            "1.11.1-3",
            "1.11.1-3ubuntu0.1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.11.1-3ubuntu0.1"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.11.1-3ubuntu0.1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=questing",
            "ecosystem": "Ubuntu:25.10"
          },
          "versions": [
            "1.11.2-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.11.2-1"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.11.2-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=stonking",
            "ecosystem": "Ubuntu:26.10"
          },
          "versions": [
            "1.11.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.11.3-1"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.11.3-1"
              }
            ]
          }
        },
        {
          "ranges": [
            {
              "type": "ECOSYSTEM",
              "events": [
                {
                  "introduced": "0"
                }
              ]
            }
          ],
          "package": {
            "name": "tinyproxy",
            "purl": "pkg:deb/ubuntu/tinyproxy?arch=source&distro=resolute",
            "ecosystem": "Ubuntu:26.04:LTS"
          },
          "versions": [
            "1.11.2-1",
            "1.11.2-1build1",
            "1.11.3-1"
          ],
          "database_specific": {
            "source": "https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2025/UBUNTU-CVE-2025-63938.json"
          },
          "ecosystem_specific": {
            "binaries": [
              {
                "binary_name": "tinyproxy",
                "binary_version": "1.11.3-1"
              },
              {
                "binary_name": "tinyproxy-bin",
                "binary_version": "1.11.3-1"
              }
            ]
          }
        }
      ],
      "modified": "2026-10-17T12:57:11.226481169Z",
      "provider": "osv",
      "upstream": [
        "CVE-2025-63938"
      ],
      "references": [
        "https://ubuntu.com/security/CVE-2025-63938",
        "https://www.cve.org/CVERecord?id=CVE-2025-63938",
        "https://github.com/tinyproxy/tinyproxy/issues/586",
        "https://github.com/rayinaw/my-hub/blob/main/CVE-2025-63938/DISCLOSURE.md",
        "https://github.com/tinyproxy/tinyproxy/commit/3c0fde94981b025271ffa1788ae425257841bf5a"
      ]
    },
    "related_cves": [
      {
        "value": "CVE-2025-63938",
        "evidence": "/upstream"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 356855,
  "published_at": "2025-11-26T17:15:00+00:00"
}