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 27% 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
73%
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.

Affected Packages

(6 across 6 ecosystems)
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
squid—7.6-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
squid—7.6-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
squid4.13-10 ... 4.13-10+deb11u6 (7 versions)4.13-10+deb11u7—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
squid5.7-2 ... 5.7-2+deb12u5 (6 versions)5.7-2+deb12u6—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
squid6.13-2, 6.13-2+deb13u16.13-2+deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
squid6.13-2 ... 7.5-1 (6 versions)7.6-1—

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 9× in last 7d / 59× 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.

Showing the most recent 100 of 115 total refreshes for this CVE.

  1. 2026-09-11 14:53 UTCEPSS rescore
  2. 2026-09-10 09:35 UTCEPSS rescore
  3. 2026-09-08 22:00 UTCEPSS rescore
  4. 2026-09-08 00:29 UTCEG score recompute
  5. 2026-09-08 00:29 UTCVendor advisory
  6. 2026-09-07 16:01 UTCEPSS rescore
  7. 2026-09-06 13:47 UTCEPSS rescore
  8. 2026-09-05 20:38 UTCEG score recompute
  9. 2026-09-05 20:38 UTCVendor advisory
  10. 2026-09-04 05:06 UTCEPSS rescore
  11. 2026-09-02 14:12 UTCEPSS rescore
  12. 2026-09-01 13:54 UTCEPSS rescore
  13. 2026-08-31 03:42 UTCEG score recompute
  14. 2026-08-31 03:42 UTCVendor advisory
  15. 2026-08-30 19:17 UTCEPSS rescore
  16. 2026-08-30 03:34 UTCEG score recompute
  17. 2026-08-30 03:34 UTCVendor advisory
  18. 2026-08-30 01:22 UTCEPSS rescore
  19. 2026-08-28 21:41 UTCEPSS rescore
  20. 2026-08-27 23:53 UTCEG score recompute
  21. 2026-08-27 23:53 UTCVendor advisory
  22. 2026-08-27 14:25 UTCEPSS rescore
  23. 2026-08-26 23:48 UTCEG score recompute
  24. 2026-08-26 23:48 UTCVendor advisory
  25. 2026-08-26 14:46 UTCEPSS rescore
Show 75 more
  1. 2026-08-25 23:51 UTCEG score recompute
  2. 2026-08-25 23:51 UTCVendor advisory
  3. 2026-08-25 13:49 UTCEPSS rescore
  4. 2026-08-24 23:38 UTCEG score recompute
  5. 2026-08-24 23:38 UTCVendor advisory
  6. 2026-08-23 23:41 UTCEG score recompute
  7. 2026-08-23 23:41 UTCVendor advisory
  8. 2026-08-23 00:19 UTCEPSS rescore
  9. 2026-08-22 23:45 UTCEG score recompute
  10. 2026-08-22 23:45 UTCVendor advisory
  11. 2026-08-21 23:49 UTCEPSS rescore
  12. 2026-08-21 23:48 UTCVendor advisory
  13. 2026-08-20 23:52 UTCEG score recompute
  14. 2026-08-20 23:52 UTCVendor advisory
  15. 2026-08-20 22:55 UTCEPSS rescore
  16. 2026-08-19 23:55 UTCEG score recompute
  17. 2026-08-19 23:55 UTCVendor advisory
  18. 2026-08-19 17:04 UTCEPSS rescore
  19. 2026-08-18 19:56 UTCEG score recompute
  20. 2026-08-18 19:56 UTCVendor advisory
  21. 2026-08-18 13:48 UTCEPSS rescore
  22. 2026-08-17 14:19 UTCEG score recompute
  23. 2026-08-17 13:47 UTCEPSS rescore
  24. 2026-08-16 14:56 UTCEPSS rescore
  25. 2026-08-16 14:23 UTCEG score recompute
  26. 2026-08-16 14:23 UTCVendor advisory
  27. 2026-08-16 02:14 UTCEPSS rescore
  28. 2026-08-15 14:27 UTCEG score recompute
  29. 2026-08-15 14:27 UTCVendor advisory
  30. 2026-08-15 01:30 UTCEPSS rescore
  31. 2026-08-14 14:30 UTCEG score recompute
  32. 2026-08-14 14:30 UTCVendor advisory
  33. 2026-08-13 22:00 UTCEPSS rescore
  34. 2026-08-13 14:33 UTCVendor advisory
  35. 2026-08-12 14:37 UTCEG score recompute
  36. 2026-08-12 14:37 UTCVendor advisory
  37. 2026-08-12 13:51 UTCEPSS rescore
  38. 2026-08-11 14:40 UTCEG score recompute
  39. 2026-08-11 14:40 UTCVendor advisory
  40. 2026-08-11 00:00 UTCEPSS rescore
  41. 2026-08-09 14:47 UTCEG score recompute
  42. 2026-08-09 13:46 UTCEPSS rescore
  43. 2026-08-08 16:37 UTCEPSS rescore
  44. 2026-08-08 14:51 UTCEG score recompute
  45. 2026-08-08 14:51 UTCVendor advisory
  46. 2026-08-06 14:58 UTCEG score recompute
  47. 2026-08-06 14:58 UTCVendor advisory
  48. 2026-08-06 13:47 UTCEPSS rescore
  49. 2026-08-05 19:17 UTCEPSS rescore
  50. 2026-08-05 15:01 UTCEG score recompute
  51. 2026-08-05 15:01 UTCVendor advisory
  52. 2026-08-04 15:10 UTCEPSS rescore
  53. 2026-08-04 13:01 UTCEG score recompute
  54. 2026-08-04 10:39 UTCEPSS rescore
  55. 2026-08-03 11:58 UTCEG score recompute
  56. 2026-08-03 10:36 UTCEPSS rescore
  57. 2026-08-02 11:11 UTCEG score recompute
  58. 2026-08-02 11:11 UTCVendor advisory
  59. 2026-08-02 02:27 UTCEPSS rescore
  60. 2026-08-01 11:14 UTCEG score recompute
  61. 2026-08-01 11:14 UTCVendor advisory
  62. 2026-08-01 04:16 UTCEPSS rescore
  63. 2026-07-31 11:17 UTCEG score recompute
  64. 2026-07-31 11:17 UTCVendor advisory
  65. 2026-07-30 16:28 UTCEPSS rescore
  66. 2026-07-30 11:21 UTCEG score recompute
  67. 2026-07-30 11:21 UTCVendor advisory
  68. 2026-07-30 01:30 UTCEPSS rescore
  69. 2026-07-29 11:22 UTCEG score recompute
  70. 2026-07-29 11:22 UTCVendor advisory
  71. 2026-07-28 15:37 UTCEPSS rescore
  72. 2026-07-28 11:25 UTCEG score recompute
  73. 2026-07-28 11:25 UTCVendor advisory
  74. 2026-07-27 11:24 UTCEG score recompute
  75. 2026-07-26 14:54 UTCEPSS rescore

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 ↗

Related CVEs(same vendor + same CWE)

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 27.2% 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-47729

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