Use After Free in Exiv2

{
  "id": "c7c9bc6d8950fcd22117f9f1ba0e75c43d2d12843d2e1f928081bb1f7718a2f5",
  "url": "https://osv.dev/vulnerability/CVE-2025-26623",
  "method": "structured",
  "payload": {
    "kind": "advisory",
    "title": "Use After Free in Exiv2",
    "summary": "Exiv2 is a C++ library and a command-line utility to read, write, delete and modify Exif, IPTC, XMP and ICC image metadata. A heap buffer overflow was found in Exiv2 versions v0.28.0 to v0.28.4. Versions prior to v0.28.0, such as v0.27.7, are **not** affected. Exiv2 is a command-line utility and C++ library for reading, writing, deleting, and modifying the metadata of image files. The heap overflow is triggered when Exiv2 is used to write metadata into a crafted image file. An attacker could potentially exploit the vulnerability to gain code execution, if they can trick the victim into running Exiv2 on a crafted image file. Note that this bug is only triggered when writing the metadata, which is a less frequently used Exiv2 operation than reading the metadata. For example, to trigger the bug in the Exiv2 command-line application, you need to add an extra command-line argument such as `fixiso`. The bug is fixed in version v0.28.5. Users are advised to upgrade. There are no known workarounds for this vulnerability.",
    "evidence": "osv:CVE-2025-26623",
    "products": [],
    "severity": "medium",
    "structured": {
      "id": "CVE-2025-26623",
      "aliases": [
        "CVE-2025-26623",
        "GHSA-38h4-fx85-qcx7",
        "PYSEC-2026-1353"
      ],
      "metrics": [
        {
          "type": "CVSS_V4",
          "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N"
        }
      ],
      "affected": [
        {
          "ranges": [
            {
              "repo": "https://github.com/exiv2/exiv2",
              "type": "GIT",
              "events": [
                {
                  "introduced": "931a40a746f5678dcc4625b06a2eb25fa4f00b34"
                },
                {
                  "fixed": "907169fa643c2c74c14fd4106e55eaeee3634d9f"
                }
              ],
              "database_specific": {
                "extracted_events": [
                  {
                    "range": [
                      {
                        "introduced": "0.28.0"
                      },
                      {
                        "fixed": "0.28.5"
                      }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StringRangeExpression"
                  },
                  {
                    "cpe": "cpe:2.3:a:exiv2:exiv2:*:*:*:*:*:*:*:*",
                    "range": [
                      {
                        "introduced": "0.28.0"
                      },
                      {
                        "fixed": "0.28.5"
                      }
                    ],
                    "source": "CPE_RANGE"
                  }
                ]
              }
            }
          ],
          "versions": [
            "v0.28.4",
            "v0.28.3",
            "v0.28.2",
            "v0.28.1",
            "v0.28.0"
          ],
          "database_specific": {
            "source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-26623.json"
          }
        }
      ],
      "modified": "2026-10-28T02:30:38.757015050Z",
      "provider": "osv",
      "references": [
        "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26623.json",
        "https://github.com/Exiv2/exiv2/security/advisories/GHSA-38h4-fx85-qcx7",
        "https://nvd.nist.gov/vuln/detail/CVE-2025-26623",
        "https://github.com/Exiv2/exiv2/issues/3168"
      ],
      "provider_metadata": {
        "cwe_ids": [
          "CWE-416"
        ],
        "cna_assigner": "GitHub_M",
        "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/26xxx/CVE-2025-26623.json"
      }
    },
    "related_cves": [
      {
        "value": "CVE-2025-26623",
        "evidence": "/id"
      }
    ],
    "security_relevant": true,
    "severity_evidence": "/severity/0/score"
  },
  "source_id": "core-osv",
  "document_id": 506126,
  "published_at": "2025-02-18T19:24:31.701+00:00"
}