CVE-2026-42535

CRITICALPre-NVD 9.19.1—
EchelonGraph scoreHIGH confidence

Score 9.1 from GitHub Security Advisory (severity: CRITICAL) published 2026-06-08. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 9.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 3 sources updated this week
9.1
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 1%CVSS: 9.1Exploit: NoneExposed: 0

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

A path handling issue in mod_dav_fs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes.

Users are recommended to upgrade to version 2.4.68, which fixes this issue.

CVSS v3
9.1
EG Score
9.1(high)
EPSS
41.4%
KEV
Not listed

Published

June 8, 2026

Last Modified

June 9, 2026

Advisory Details (2)

Auto-updated Jun 9, 2026
⚠️ Active exploitation confirmed. Patch available.
generic

oss-security - CVE-2026-42535: Apache HTTP Server: mod_dav_fs protected directory access

http://www.openwall.com/lists/oss-security/2026/06/08/8
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-2026-42535(2)

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

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 58× in last 7d / 284× 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 284 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. 2026-07-06 01:46 UTCEG score recompute
  6. 2026-07-06 01:46 UTCGHSA enrichment
  7. 2026-07-05 21:54 UTCEG score recompute
  8. 2026-07-05 21:54 UTCGHSA enrichment
  9. 2026-07-05 17:40 UTCEG score recompute
  10. 2026-07-05 17:40 UTCGHSA enrichment
  11. 2026-07-05 02:30 UTCEPSS rescore
  12. 2026-07-04 20:16 UTCEG score recompute
  13. 2026-07-04 20:16 UTCGHSA enrichment
  14. 2026-07-04 15:06 UTCEG score recompute
  15. 2026-07-04 15:06 UTCGHSA enrichment
  16. 2026-07-04 06:31 UTCEPSS rescore
  17. 2026-07-04 00:07 UTCEG score recompute
  18. 2026-07-04 00:06 UTCGHSA enrichment
  19. 2026-07-03 20:13 UTCEG score recompute
  20. 2026-07-03 20:13 UTCGHSA enrichment
  21. 2026-07-03 16:20 UTCEG score recompute
  22. 2026-07-03 16:20 UTCGHSA enrichment
  23. 2026-07-03 09:26 UTCEG score recompute
  24. 2026-07-03 09:26 UTCGHSA enrichment
  25. 2026-07-03 03:19 UTCEG score recompute
Show 75 more
  1. 2026-07-03 03:19 UTCGHSA enrichment
  2. 2026-07-02 23:23 UTCEG score recompute
  3. 2026-07-02 23:23 UTCGHSA enrichment
  4. 2026-07-02 19:30 UTCEG score recompute
  5. 2026-07-02 19:30 UTCGHSA enrichment
  6. 2026-07-02 15:37 UTCEG score recompute
  7. 2026-07-02 15:37 UTCGHSA enrichment
  8. 2026-07-02 11:24 UTCEG score recompute
  9. 2026-07-02 11:24 UTCGHSA enrichment
  10. 2026-07-02 06:41 UTCEG score recompute
  11. 2026-07-02 06:41 UTCGHSA enrichment
  12. 2026-07-02 02:49 UTCEG score recompute
  13. 2026-07-02 02:49 UTCGHSA enrichment
  14. 2026-07-01 22:57 UTCEG score recompute
  15. 2026-07-01 22:57 UTCGHSA enrichment
  16. 2026-07-01 18:42 UTCEG score recompute
  17. 2026-07-01 18:42 UTCGHSA enrichment
  18. 2026-07-01 15:06 UTCEPSS rescore
  19. 2026-07-01 14:49 UTCEG score recompute
  20. 2026-07-01 14:49 UTCGHSA enrichment
  21. 2026-07-01 10:47 UTCEG score recompute
  22. 2026-07-01 10:47 UTCGHSA enrichment
  23. 2026-07-01 06:55 UTCEG score recompute
  24. 2026-07-01 06:55 UTCGHSA enrichment
  25. 2026-07-01 00:46 UTCEG score recompute
  26. 2026-07-01 00:46 UTCGHSA enrichment
  27. 2026-06-30 23:22 UTCEPSS rescore
  28. 2026-06-30 20:53 UTCEG score recompute
  29. 2026-06-30 20:53 UTCGHSA enrichment
  30. 2026-06-30 16:31 UTCEG score recompute
  31. 2026-06-30 16:30 UTCGHSA enrichment
  32. 2026-06-30 07:46 UTCEG score recompute
  33. 2026-06-30 07:46 UTCGHSA enrichment
  34. 2026-06-30 03:51 UTCEG score recompute
  35. 2026-06-30 03:51 UTCGHSA enrichment
  36. 2026-06-29 23:59 UTCEG score recompute
  37. 2026-06-29 23:58 UTCGHSA enrichment
  38. 2026-06-29 19:52 UTCEG score recompute
  39. 2026-06-29 19:52 UTCGHSA enrichment
  40. 2026-06-29 15:59 UTCEG score recompute
  41. 2026-06-29 15:59 UTCGHSA enrichment
  42. 2026-06-29 14:06 UTCEPSS rescore
  43. 2026-06-29 12:07 UTCEG score recompute
  44. 2026-06-29 12:07 UTCGHSA enrichment
  45. 2026-06-29 08:14 UTCEG score recompute
  46. 2026-06-29 08:14 UTCGHSA enrichment
  47. 2026-06-28 23:56 UTCEG score recompute
  48. 2026-06-28 23:56 UTCGHSA enrichment
  49. 2026-06-28 19:59 UTCEG score recompute
  50. 2026-06-28 19:59 UTCGHSA enrichment
  51. 2026-06-28 16:07 UTCEG score recompute
  52. 2026-06-28 16:07 UTCGHSA enrichment
  53. 2026-06-28 14:07 UTCEPSS rescore
  54. 2026-06-28 12:14 UTCEG score recompute
  55. 2026-06-28 12:14 UTCGHSA enrichment
  56. 2026-06-28 08:21 UTCEG score recompute
  57. 2026-06-28 08:21 UTCGHSA enrichment
  58. 2026-06-28 04:56 UTCEPSS rescore
  59. 2026-06-28 04:29 UTCEG score recompute
  60. 2026-06-28 04:29 UTCGHSA enrichment
  61. 2026-06-28 00:37 UTCEG score recompute
  62. 2026-06-28 00:37 UTCGHSA enrichment
  63. 2026-06-27 20:44 UTCEG score recompute
  64. 2026-06-27 20:44 UTCGHSA enrichment
  65. 2026-06-27 16:51 UTCEG score recompute
  66. 2026-06-27 16:51 UTCGHSA enrichment
  67. 2026-06-27 12:58 UTCEG score recompute
  68. 2026-06-27 12:58 UTCGHSA enrichment
  69. 2026-06-27 09:06 UTCEG score recompute
  70. 2026-06-27 09:06 UTCGHSA enrichment
  71. 2026-06-27 05:13 UTCEG score recompute
  72. 2026-06-27 05:13 UTCGHSA enrichment
  73. 2026-06-27 03:08 UTCEPSS rescore
  74. 2026-06-27 00:56 UTCEG score recompute
  75. 2026-06-27 00:56 UTCGHSA enrichment

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-42535?
CVE-2026-42535 is a critical vulnerability published on June 8, 2026. A path handling issue in moddavfs in Apache 2.4.67 and earlier allows a WebDAV content author to directly manipulate trusted DAV property databases, potentially causing child process crashes. Users are recommended to upgrade to version 2.4.68, which fixes this issue.
When was CVE-2026-42535 disclosed?
CVE-2026-42535 was first published in the National Vulnerability Database on June 8, 2026, with the most recent update on June 9, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42535 actively exploited?
CVE-2026-42535 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 41.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42535?
CVE-2026-42535 has a CVSS v3.1 base score of 9.1 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-42535?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42535, 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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