Medium severity6.5NVD Advisory· Published Mar 26, 2026· Updated Jun 17, 2026
CVE-2026-33515
CVE-2026-33515
Description
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.
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LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*range: <7.5
- (no CPE)range: < 7.5
Patches
Vulnerability mechanics
References
5- github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165nvdPatch
- www.openwall.com/lists/oss-security/2026/03/25/4nvdMailing ListThird Party Advisory
- github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7cnvdVendor Advisory
- github.com/squid-cache/squid/pull/2220nvdIssue Tracking
- github.com/squid-cache/squid/pull/2220nvdIssue Tracking
News mentions
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