Squid through 4.14 and 5.x through 5.0.5, in some configurations, allows information disclosure because of an out-of-bounds read in WCCP protocol data. This can be leveraged as part of a chain for remote code execution as nobody.
www.openwall.com/lists/oss-security/2021/10/04/1
www.squid-cache.org/Versions/
github.com/squid-cache/squid/security/advisories/GHSA-rgf3-9v3p-qp82
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/LSQ3U54ZCNXR44QRPW3AV2VCS6K3TKCF/
lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/T4EPIWUZDJAXADDHVOPKRBTQHPBR6H66/
security.gentoo.org/glsa/202105-14
www.debian.org/security/2022/dsa-5171
www.zerodayinitiative.com/advisories/ZDI-21-157/