CVE-2026-500125.5MediumCWE-20
Squid: Memory corruption in cache_digest reply handling
squid-cache · squid
Not in CISA KEV
1.4%probability of exploitation in the next 30 days
71st percentile
050100
Higher than 71% of scored CVEs
5.5MediumCVSS 3.1
LowMediumHighCrit.
DescriptionNVD
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper input validation bug in cache digest reply handling (peerDigestSwapInMask in src/peer_digest.cc), Squid is vulnerable to a heap-based buffer overflow: a cache digest's on-the-wire size may be larger than the mask_size declared within the digest, so a trusted peer sending a maliciously crafted reply to a cache_digest request message can trigger the overflow. This attack is limited to Squid instances compiled with the --enable-cache-digests option and configured with cache_peer entries. This issue is fixed in version 7.6.
Coverage1 article · 1 outlet
First in our coverage: SecurityOnline, 13 Jun.
- Critical Squid Proxy Vulnerabilities Patched in Latest ReleaseSecurityOnline · first in our coverage · mentions it in passing
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