CVE-2026-9137

HIGHNVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory published 2026-05-20. 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: 0%CVSS: 7.5Exploit: NoneExposed: 0

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

The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource exhaustion or log flooding.

CVSS v3
7.5
EG Score
7.5(medium)
EPSS
28.6%
KEV
Not listed

Published

May 20, 2026

Last Modified

June 22, 2026

Advisory Details (1)

Auto-updated May 29, 2026
Patch available. Sources: github_commit.
github_commit Patch Available

commit 02932cccab23 (MISP/MISP)

Patch available: MISP/MISP v2.5.38 (contains commit 02932cccab23)

https://github.com/MISP/MISP/commit/02932cccab230b295afcaf5aa05e363d30db0ec9

Vendor Advisories for CVE-2026-9137(1)

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 6× in last 7d / 55× 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 132 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-9137?
CVE-2026-9137 is a high vulnerability published on May 20, 2026. The CSP report endpoint in MISP intended to limit logged CSP reports to 1 KB but incorrectly allowed reports up to 1 MB before truncation. On deployments where the endpoint is reachable by untrusted clients, this could allow attackers to generate excessive log volume and contribute to resource…
When was CVE-2026-9137 disclosed?
CVE-2026-9137 was first published in the National Vulnerability Database on May 20, 2026, with the most recent update on June 22, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-9137 actively exploited?
CVE-2026-9137 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 28.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-9137?
CVE-2026-9137 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-9137?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-9137, 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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