DEBIAN-CVE-2026-33515
Squid is a caching proxy for the Web. Prior to version 7.5, due to improper input validation, Squid is vulnerable to out of bounds read when handling ICP traffic. This problem allows a remote attacker to receive small amounts of memory potentially containing sensitive information when responding with errors to invalid ICP requests. 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. Version 7.5 contains a patch.
DEBIAN-CVE-2026-33515
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-2026-33515
squid
Source reference: /affected/0/package/name
- Affected versions
- 5.7-2
Source reference:
/affected/0/versions5.7-2+deb12u1Source reference:
/affected/0/versions5.7-2+deb12u2Source reference:
/affected/0/versions5.7-2+deb12u3Source reference:
/affected/0/versions5.7-2+deb12u4Source reference:
/affected/0/versions5.7-2+deb12u5Source reference:
/affected/0/versions - Fixed versions
- 5.7-2+deb12u6
Source reference:
/affected/0/ranges - Prerequisites
- Not stated in this record
squid
Source reference: /affected/1/package/name
- Affected versions
- 6.13-2
Source reference:
/affected/1/versions6.13-2+deb13u1Source reference:
/affected/1/versions - Fixed versions
- 6.13-2+deb13u2
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/versions7.1-1Source reference:
/affected/2/versions7.2-1Source reference:
/affected/2/versions7.2-2Source reference:
/affected/2/versions7.4-1Source 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"
},
{
"fixed": "5.7-2+deb12u6"
}
]
}
],
"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"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33515.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
},
{
"ranges": [
{
"type": "ECOSYSTEM",
"events": [
{
"introduced": "0"
},
{
"fixed": "6.13-2+deb13u2"
}
]
}
],
"package": {
"name": "squid",
"purl": "pkg:deb/debian/squid?arch=source&distro=trixie",
"ecosystem": "Debian:13"
},
"versions": [
"6.13-2",
"6.13-2+deb13u1"
],
"database_specific": {
"source": "https://storage.googleapis.com/debian-osv/debian-cve-osv/DEBIAN-CVE-2026-33515.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-2026-33515.json"
},
"ecosystem_specific": {
"urgency": "not yet assigned"
}
}
]Publisher severity
No explicit severity was provided.
- Event
- #55953 · Revision 1
- Added to Heist Feed
- Publisher date