CVE-2026-33515Squid is a caching proxy for the Web.
Updated under an hour ago ()
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No exploitation reported and no EPSS estimate yet.
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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
- 6.5 MEDIUM (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N
- Weakness (CWE)
- CWE-125, CWE-1289
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
squid-cache squid squid-cache:squid | before 7.5 | NVD |
References
- https://github.com/squid-cache/squid/commit/8138e909d2058d4401e0ad49b583afaec912b165patch
- https://github.com/squid-cache/squid/pull/2220issue-tracking
- https://github.com/squid-cache/squid/pull/2220#discussion_r2727683637issue-tracking
- https://github.com/squid-cache/squid/security/advisories/GHSA-84p4-hcx7-jj7cvendor-advisory
- http://www.openwall.com/lists/oss-security/2026/03/25/4mailing-list, third-party-advisory
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.