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
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 7.5Exploit: NoneExposed: 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)
EPSS
44.1%
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(4)

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

Patch Availability(3)

Vendor / EcosystemFixed in / PatchReleasedSource
ubuntulibapache2-mod-proxy-uwsgi (2.4.58-1ubuntu8.12) @ noble2026-06-14ubuntu
ubuntuapache2-utils (2.4.18-2ubuntu3.17+esm18) @ xenial2026-06-14ubuntu
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.

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 8× in last 7d / 83× 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 158 total refreshes for this CVE.

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

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 44.1% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
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.

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