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DEBIAN-CVE-2026-32748

Type: advisorySource: OSV1 source record

Squid is a caching proxy for the Web. Prior to version 7.5, due to premature release of resource during expected lifetime and heap Use-After-Free bugs, Squid is vulnerable to Denial of Service when handling ICP traffic. This problem allows a remote attacker to perform a reliable and repeatable Denial of Service attack against the Squid service using ICP protocol. This attack is limited to Squid deployments that explicitly enable ICP support (i.e. configure non-zero `icp_port`). This problem _cannot_ be mitigated by denying ICP queries using `icp_access` rules. This bug is fixed in Squid version 7.5.

Announced Group revision 1
Original source ↗

DEBIAN-CVE-2026-32748

Primary source · Revision 1

Imported from structured advisory data. Source references identify upstream records or fields; verify affected versions and your deployed configuration.

Security context

Source reference: osv:DEBIAN-CVE-2026-32748

squid

Source reference: /affected/0/package/name

Affected versions
5.7-2

Source reference: /affected/0/versions

5.7-2+deb12u1

Source reference: /affected/0/versions

5.7-2+deb12u2

Source reference: /affected/0/versions

5.7-2+deb12u3

Source reference: /affected/0/versions

5.7-2+deb12u4

Source reference: /affected/0/versions

5.7-2+deb12u5

Source reference: /affected/0/versions

5.7-2+deb12u6

Source reference: /affected/0/versions

6.1-1

Source reference: /affected/0/versions

6.1-2

Source reference: /affected/0/versions

6.10-1

Source reference: /affected/0/versions

6.12-1

Source reference: /affected/0/versions

6.13-1

Source reference: /affected/0/versions

6.13-2

Source reference: /affected/0/versions

6.3-1

Source reference: /affected/0/versions

6.5-1

Source reference: /affected/0/versions

6.6-1

Source reference: /affected/0/versions

6.8-1

Source reference: /affected/0/versions

6.9-1

Source reference: /affected/0/versions

7.1-1

Source reference: /affected/0/versions

7.2-1

Source reference: /affected/0/versions

7.2-2

Source reference: /affected/0/versions

7.4-1

Source reference: /affected/0/versions

7.5-1

Source reference: /affected/0/versions

7.6-1

Source reference: /affected/0/versions

7.6-2

Source reference: /affected/0/versions

7.7-1

Source reference: /affected/0/versions

Fixed versions
Not stated in this record
Prerequisites
Not stated in this record

squid

Source reference: /affected/1/package/name

Affected versions
6.13-2

Source reference: /affected/1/versions

6.13-2+deb13u1

Source reference: /affected/1/versions

6.13-2+deb13u2

Source reference: /affected/1/versions

Fixed versions
6.13-2+deb13u3

Source reference: /affected/1/ranges

Prerequisites
Not stated in this record

squid

Source reference: /affected/2/package/name

Affected versions
6.13-2

Source reference: /affected/2/versions

7.1-1

Source reference: /affected/2/versions

7.2-1

Source reference: /affected/2/versions

7.2-2

Source reference: /affected/2/versions

7.4-1

Source reference: /affected/2/versions

Fixed versions
7.5-1

Source reference: /affected/2/ranges

Prerequisites
Not stated in this record

Structured affected-version data

Original package identities and version rules from this source.

[
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          }
        ]
      }
    ],
    "package": {
      "name": "squid",
      "purl": "pkg:deb/debian/squid?arch=source&distro=bookworm",
      "ecosystem": "Debian:12"
    },
    "versions": [
      "5.7-2",
      "5.7-2+deb12u1",
      "5.7-2+deb12u2",
      "5.7-2+deb12u3",
      "5.7-2+deb12u4",
      "5.7-2+deb12u5",
      "5.7-2+deb12u6",
      "6.1-1",
      "6.1-2",
      "6.10-1",
      "6.12-1",
      "6.13-1",
      "6.13-2",
      "6.3-1",
      "6.5-1",
      "6.6-1",
      "6.8-1",
      "6.9-1",
      "7.1-1",
      "7.2-1",
      "7.2-2",
      "7.4-1",
      "7.5-1",
      "7.6-1",
      "7.6-2",
      "7.7-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32748.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "6.13-2+deb13u3"
          }
        ]
      }
    ],
    "package": {
      "name": "squid",
      "purl": "pkg:deb/debian/squid?arch=source&distro=trixie",
      "ecosystem": "Debian:13"
    },
    "versions": [
      "6.13-2",
      "6.13-2+deb13u1",
      "6.13-2+deb13u2"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32748.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  },
  {
    "ranges": [
      {
        "type": "ECOSYSTEM",
        "events": [
          {
            "introduced": "0"
          },
          {
            "fixed": "7.5-1"
          }
        ]
      }
    ],
    "package": {
      "name": "squid",
      "purl": "pkg:deb/debian/squid?arch=source&distro=forky",
      "ecosystem": "Debian:14"
    },
    "versions": [
      "6.13-2",
      "7.1-1",
      "7.2-1",
      "7.2-2",
      "7.4-1"
    ],
    "database_specific": {
      "source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-32748.json"
    },
    "ecosystem_specific": {
      "urgency": "not yet assigned"
    }
  }
]

Publisher severity

No explicit severity was provided.

Event
#57521 · Revision 1
Added to Heist Feed
Publisher date
Read the original announcement

Revision history

  1. DEBIAN-CVE-2026-32748 · Revision 1Source updated