Vulnerability Report

CVE-2026-47729

Title: Out-of-bounds read in Squid FTP gateway

Memory Corruption

Proof Of Concept

PoC Available for CVE-2026-47729

CWE Category CWE-125
Published Date Jul 16, 2026
Modified Date Jul 20, 2026
Exploit Status Available
Score 6.5 CVSS v3.1
Exploit Probability (EPSS)
1.50%

Vulnerability Summary

CVE-2026-47729: 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.

Impacted Vendors

S
squid-cache 1
S
squid 1

Reference Links

https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8 https://github.com/squid-cache/squid/pull/2408 https://github.com/squid-cache/squid/pull/2409 https://github.com/squid-cache/squid/releases/tag/SQUID_7_6 https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg
CVSS v3.1
Source Entity [email protected]
Severity MEDIUM
6.5
Attack Vector
NETWORK
Complexity
LOW
Privileges
N/A
Interaction
NONE
Confidentiality
N/A
Integrity
N/A
Availability
N/A
Scope
UNCHANGED
RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-47729 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/0xBlackash/CVE-2026-47729
View Code
MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK
Complexity LOW
Privileges N/A
Interaction NONE
CVSS Vector String CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Affected Stack

No specific products linked.