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CVE-2026-47729

41
FAUCET Score

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.

First published: Jul 16, 2026Last modified: Jul 16, 2026

Impacted Technologies

VendorProductVersion(s)CPE
< 7.6CPE matchmatch criteria
cpe:2.3:a:squid-cache:squid:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 3.1

6.5MEDIUM

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

Attack Vector
NETWORK
Attack Complexity
LOW
Privileges Required
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality Impact
HIGH
Integrity Impact
NONE
Availability Impact
NONE
Exploitability Score
2.8
Impact Score
3.6
CvssVersion
3.1

Exploit Intelligence

EPSS Score
1.50%
Probability of exploitation in next 30 days
EPSS Percentile
71.6%
Percentile rank of EPSS score among Peer Group
As of 2026-07-25
Model: v2026.06.15
This CVE's current EPSS score of 0.0150 is in the 85th percentile among its peer group of 21,951 CVEs.

Social Chatter

The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.0 Mastodon, and 0.1 GitHub mentions.

Media Mentions

The average CVE in this peer group has 0.0 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
microsoftpatch availablevia msrc
Product: azl3 squid 6.13-4 on Azure Linux 3.0Fixed in: 6.13-5

Vendor Advisories (1)

microsoft2026-Jul/CVE-2026-47729Moderate

Squid: Memory disclosure in FTP gateway

Jul 14, 2026

References

github.com / squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8
Patch
github.com / squid-cache/squid/pull/2408
Patch
github.com / squid-cache/squid/pull/2409
Patch
github.com / squid-cache/squid/releases/tag/SQUID_7_6
Release Notes
github.com / squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg
Vendor Advisory