CVE-2026-50012 | BDVDB-2026-348972 Detail

Description#

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.

Impact#

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Exploit#

History#

1. Version 12026-07-16Record published in the CVE List.
2. Version 22026-07-17Most recent update recorded in the CVE List.