CVE-2026-42591

HIGHNVD 8.28.2—
EchelonGraph scoreMEDIUM confidence

Score 8.2 from GitHub Security Advisory (severity: HIGH) published 2026-05-07. NVD baseline CVSS 8.2; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Elevated
8.2
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 8.2Exploit: NoneExposed: 0

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

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely bypassing the SSRF filters. This vulnerability is fixed in 8.32.0.

CVSS v3
8.2
EG Score
8.2(medium)
EPSS
15.6%
KEV
Not listed

Published

May 14, 2026

Last Modified

May 18, 2026

Advisory Details (1)

Auto-updated May 14, 2026
🔬 Proof of concept available. Patch available. Sources: github.
github Patch Available🟡 PoC Available

Server-Side Request Forgery (SSRF) in github.com/gotenberg/gotenberg/v8 · Advisory · gotenberg/gotenberg · GitHub

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-rm4c-xj6x-49mw

Patch Availability(1)

Vendor / EcosystemFixed in / PatchReleasedSource
gogithub.com/gotenberg/gotenberg/v8—ghsa

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

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/gotenberg/gotenberg/v8———

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 51× 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 154 total refreshes for this CVE.

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

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Frequently asked(5)

What is CVE-2026-42591?
CVE-2026-42591 is a high vulnerability published on May 14, 2026. Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the LibreOffice conversion endpoint (/forms/libreoffice/convert) passes uploaded documents directly to LibreOffice without inspecting their content. LibreOffice then fetches any embedded external URLs on its own, completely…
When was CVE-2026-42591 disclosed?
CVE-2026-42591 was first published in the National Vulnerability Database on May 14, 2026, with the most recent update on May 18, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-42591 actively exploited?
CVE-2026-42591 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 15.6% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-42591?
CVE-2026-42591 has a CVSS v3 base score of 8.2 (NVD).
How do I remediate CVE-2026-42591?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-42591, 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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