CVE-2026-29169

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-04. NVD baseline CVSS 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Trending — 4 sources updated this week
7.5EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 1%CVSS: 7.5Exploit: None knownExposed: 0

A fix is available — apply it.

A NULL pointer dereference in mod_dav_lock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.mod_dav_lock is not used internally by mod_dav or mod_dav_fs.

The only known use-case for mod_dav_lock was mod_dav_svn from Apache Subversion earlier than version 1.2.0.

Users are recommended to upgrade to version 2.4.66, which fixes this issue, or remove mod_dav_lock.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
49(Track)
EG Risk 49/100SSVC: 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
Severity75% × 45%
Exploitation1% × 40%
Automatability100% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
46%
KEV
Not listed

Published

May 4, 2026

Last Modified

May 5, 2026

Advisory Details (2)

Auto-updated May 4, 2026
⚠️ Active exploitation confirmed. Patch available.
generic

oss-security - CVE-2026-29169: Apache HTTP Server: mod_dav_lock indirect lock crash

http://www.openwall.com/lists/oss-security/2026/05/04/20
generic Patch Available🔴 Active Exploitation

Apache HTTP Server 2.4 vulnerabilities - The Apache HTTP Server Project

https://httpd.apache.org/security/vulnerabilities_24.html

Vendor Advisories for CVE-2026-29169(9)

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

Patch Availability(10)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntuapache2-utils (2.4.66-2ubuntu2.1) @ resolute2026-08-23ubuntu
ubuntuapache2-utils (2.4.18-2ubuntu3.17+esm18) @ xenial2026-08-23ubuntu
redhatinsights-proxy/insights-proxy-container-rhel9:17864336562026-08-11redhat
redhathttpd-0:2.4.63-1.el10_0.42026-07-28redhat
redhathttpd:2.4-8100020260714175253.489197e62026-07-21redhat
redhathttpd-0:2.4.62-13.el9_8.52026-07-20redhat
redhathttpd-0:2.4.63-13.el10_2.42026-07-01redhat
redhatmod_dav_lock.so2026-06-22redhat
redhatjbcs-httpd24-httpd-0:2.4.62-13.el7jbcs2026-06-22redhat
redhathttpd-main-2.4.67-1.hum12026-05-13redhat

Patches are aggregated from vendor advisories (Red Hat, Microsoft, Cisco, GitHub) and package ecosystems (OSV, GHSA). Multiple rows for the same upstream release have been deduplicated.

Affected Packages

(9 across 9 ecosystems)
Alpine:v3.20(1)
PackageVulnerable rangeFixed inDependents
apache2—2.4.67-r0—
Alpine:v3.21(1)
PackageVulnerable rangeFixed inDependents
apache2—2.4.67-r0—
Alpine:v3.22(1)
PackageVulnerable rangeFixed inDependents
apache2—2.4.67-r0—
Alpine:v3.23(1)
PackageVulnerable rangeFixed inDependents
apache2—2.4.67-r0—
Alpine:v3.24(1)
PackageVulnerable rangeFixed inDependents
apache2—2.4.67-r0—
Debian:11(1)
PackageVulnerable rangeFixed inDependents
apache22.4.48-3.1 ... 2.4.66-8 (82 versions)2.4.67-1~deb11u1—
Debian:12(1)
PackageVulnerable rangeFixed inDependents
apache22.4.57-2 ... 2.4.67-1~deb12u1 (46 versions)2.4.67-1~deb12u2—
Debian:13(1)
PackageVulnerable rangeFixed inDependents
apache22.4.65-2 ... 2.4.67-1~deb13u1 (22 versions)2.4.67-1~deb13u2—
Debian:14(1)
PackageVulnerable rangeFixed inDependents
apache22.4.65-2 ... 2.4.67-1~deb13u3 (24 versions)2.4.67-1—

Weakness Classification(1)

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

Additional Vendor Advisories

(2)

Vendors that published advisories for this CVE beyond the curated set above. Broader coverage but minimal per-row detail — click through for the original advisory.

Data Freshness Timeline

(refreshed 10× in last 7d / 81× 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 249 total refreshes for this CVE.

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

Related CVEs(same vendor + same CWE)

Frequently asked(5)

What is CVE-2026-29169?
CVE-2026-29169 is a high vulnerability published on May 4, 2026. A NULL pointer dereference in moddavlock in Apache HTTP Server 2.4.66 and earlier may allow an attacker to crash the server with a malicious request.moddavlock is not used internally by moddav or moddav_fs. The only known use-case for moddavlock was moddavsvn from Apache Subversion earlier than…
When was CVE-2026-29169 disclosed?
CVE-2026-29169 was first published in the National Vulnerability Database on May 4, 2026, with the most recent update on May 5, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-29169 actively exploited?
CVE-2026-29169 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 1% probability of exploitation in the next 30 days, which ranks it in the top 54.2% of all scored CVEs.
What is the CVSS score of CVE-2026-29169?
CVE-2026-29169 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-29169?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-29169, 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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