CVE-2026-47729

MEDIUMPre-NVD 6.56.5—
EchelonGraph scoreMEDIUM confidence

This medium-severity CVE scores 6.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.5%, top 28% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
Trending — 3 sources updated this weekElevated
6.5EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 2%CVSS: 6.5Exploit: Elevated riskExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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.

CVSS v3
6.5
EG Score
6.5(medium)
EG Risk
45(Track)
EG Risk 45/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity65% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
2%
EPSS %ILE
72%
KEV
Not listed

Published

July 16, 2026

Last Modified

July 20, 2026

Advisory Details (5)

Auto-updated Jul 16, 2026
Patch available. Sources: github, github_pr, github_commit, github_release.
github_release Patch Available

v7.6

Patch available: squid-cache/squid SQUID_7_6

https://github.com/squid-cache/squid/releases/tag/SQUID_7_6
github_commit

commit 865a131c7d55 (squid-cache/squid)

Fix landed in squid-cache/squid commit 865a131c7d55 — awaiting tagged release

https://github.com/squid-cache/squid/commit/865a131c7d557e68c965043d98c2eccae26deef8
github_pr

Improve parsing of certain FTP directory listing formats (#2408)

Fix merged in squid-cache/squid PR #2409 on 2026-05-17 — awaiting tagged release

https://github.com/squid-cache/squid/pull/2409
github_pr

Improve parsing of certain FTP directory listing formats

Upstream fix in progress (PR #2408 · squid-cache/squid, state=closed)

https://github.com/squid-cache/squid/pull/2408
github Patch Available

SQUID-2026:4 Memory disclosure in FTP gateway · Advisory · squid-cache/squid · GitHub

https://github.com/squid-cache/squid/security/advisories/GHSA-8c37-pxjq-qwrg

Vendor Advisories for CVE-2026-47729(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(2)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 10× in last 7d / 16× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

  1. 2026-07-26 14:54 UTCEPSS rescore
  2. 2026-07-26 11:25 UTCEG score recompute
  3. 2026-07-26 11:25 UTCVendor advisory
  4. 2026-07-25 14:18 UTCEPSS rescore
  5. 2026-07-24 14:18 UTCEPSS rescore
  6. 2026-07-23 14:18 UTCEPSS rescore
  7. 2026-07-23 03:17 UTCEG score recompute
  8. 2026-07-22 14:08 UTCEPSS rescore
  9. 2026-07-21 15:24 UTCEPSS rescore
  10. 2026-07-20 17:08 UTCEPSS rescore
  11. 2026-07-19 14:31 UTCEPSS rescore
  12. 2026-07-19 02:35 UTCEG score recompute
  13. 2026-07-19 02:29 UTCEPSS rescore
  14. 2026-07-18 10:04 UTCEPSS rescore
  15. 2026-07-16 16:30 UTCEG score recompute
  16. 2026-07-16 16:28 UTCMITRE cvelistV5first tracked

Publicly available exploits

(1 reference)

Working exploit code is in the public domain (1 GitHub PoC). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • GitHub PoC0xBlackash/CVE-2026-47729
    First seen Jun 21, 2026

    CVE-2026-47729

    Open source ↗

Frequently asked(5)

What is CVE-2026-47729?
CVE-2026-47729 is a medium vulnerability published on July 16, 2026. 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…
When was CVE-2026-47729 disclosed?
CVE-2026-47729 was first published in the National Vulnerability Database on July 16, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-47729 actively exploited?
CVE-2026-47729 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 28.3% of all scored CVEs.
What is the CVSS score of CVE-2026-47729?
CVE-2026-47729 has a CVSS v3 base score of 6.5 (NVD).
How do I remediate CVE-2026-47729?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-47729, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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