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.

CVSS

No CVSS.

References

Link	Resource
https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165
https://github.com/squid-cache/squid/pull/2220
https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637
https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7c
http://www.openwall.com/lists/oss-security/2026/03/25/4

Configurations

No configuration.

History

No history.

Information

Published : 2026-03-26 01:16

Updated : 2026-03-26 15:13

NVD link : CVE-2026-33515

Mitre link : CVE-2026-33515

CVE.ORG link : CVE-2026-33515

JSON object : View

Products Affected

No product.

CWE

CWE-125

Out-of-bounds Read

CWE-1289

Improper Validation of Unsafe Equivalence in Input

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