Exploitation Summary
EIP tracks 1 public exploit for CVE-2026-47729. PoCs published by 0xBlackash.
AI-analyzed exploit summary This PoC exploits CVE-2026-47729 (Squidbleed), a heap buffer over-read vulnerability in Squid proxy, by setting up a malicious FTP server that sends truncated directory listings to leak adjacent memory containing credentials (Basic Auth/Bearer tokens). The exploit uses multi-threaded polling to harvest leaked data from the target Squid instance.
Description
Squid is a caching proxy for the Web. Prior to 7.6, due to an improper validation of syntactic correctness of input in the FTP gateway (src/clients/FtpGateway.cc), Squid is vulnerable to an out-of-bounds read: when a listing entry date in the TypeA or TypeB directory-listing formats is not followed by a filename, parsing was not restricted to the input buffer, so a trusted client accessing a misbehaving FTP server through Squid's gateway feature could read memory from random unrelated transactions. This issue is fixed in version 7.6.
Exploits (1)
This PoC exploits CVE-2026-47729 (Squidbleed), a heap buffer over-read vulnerability in Squid proxy, by setting up a malicious FTP server that sends truncated directory listings to leak adjacent memory containing credentials (Basic Auth/Bearer tokens). The exploit uses multi-threaded polling to harvest leaked data from the target Squid instance.
References (5)
Scores
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N