Out-of-bounds Read Affecting squid package, versions <5.7-2+deb12u6


Severity

Recommended
0.0
medium
0
10

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Threat Intelligence

EPSS
1.04% (60th percentile)

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  • Snyk IDSNYK-ECHOLATEST-SQUID-18291733
  • published24 Jul 2026
  • disclosed26 Mar 2026

Introduced: 26 Mar 2026

CVE-2026-33515  (opens in a new tab)
CWE-125  (opens in a new tab)
CWE-1289  (opens in a new tab)

How to fix?

Upgrade Echo:latest squid to version 5.7-2+deb12u6 or higher.

NVD Description

Note: Versions mentioned in the description apply only to the upstream squid package and not the squid package as distributed by Echo. See How to fix? for Echo:latest relevant fixed versions and status.

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.

CVSS Base Scores

version 3.1