CVE-2026-45741

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

Score 7.5 from GitHub Security Advisory (severity: HIGH) published 2026-05-29. a secondary CVSS source baseline 7.5; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Elevated
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: Elevated riskExposed: 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. In 8.32.0 and earlier, the IsPublicIP function in pkg/gotenberg/outbound.go does not reject the 2002::/16 6to4 prefix, the 64:ff9b::/96 and 64:ff9b:1::/48 NAT64 prefixes, the fec0::/10 deprecated site-local prefix, Teredo, and other transition prefixes that can embed or route to non-public IPv4 destinations. The addr.Unmap operation only handles IPv4-mapped IPv6 addresses, so a crafted DNS AAAA record can cause the outbound HTTP client to treat an address wrapping an internal destination such as 169.254.169.254 as public. An unauthenticated attacker can use a conversion route with WithDenyPrivateIPs enabled to reach cloud metadata services, and the Chromium URL conversion route can return the internal response as a PDF, potentially exposing cloud credentials. Exploitation requires a deployment whose host routes the relevant IPv6 prefix, such as a dual-stack or NAT64-enabled environment. This issue is fixed in version 8.33.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
50(Track)
EG Risk 50/100SSVC: 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%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
1%
EPSS %ILE
57%
KEV
Not listed

Published

May 29, 2026

Last Modified

August 19, 2026

Advisory Details (3)

Auto-updated Aug 19, 2026
🔬 Proof of concept available. Patch available. Sources: github, github_commit, github_release.
github_release Patch Available

8.33.0

Patch available: gotenberg/gotenberg v8.33.0

https://github.com/gotenberg/gotenberg/releases/tag/v8.33.0
github_commit Patch Available

commit f9a01c9fb308 (gotenberg/gotenberg)

Patch available: gotenberg/gotenberg v8.33.0 (contains commit f9a01c9fb308)

https://github.com/gotenberg/gotenberg/commit/f9a01c9fb308372170ab7fc97b17a118ee8a125c
github Patch Available🟡 PoC Available

SSRF deny-list bypass in IsPublicIP via IPv6 6to4 / NAT64 / site-local prefixes · Advisory · gotenberg/gotenberg · GitHub

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-86m8-88fq-xfxp

Vendor Advisories for CVE-2026-45741(1)

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

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

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/gotenberg/gotenberg/v7———
github.com/gotenberg/gotenberg/v8———

Weakness Classification(2)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 48× 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 122 total refreshes for this CVE.

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

Frequently asked(5)

What is CVE-2026-45741?
CVE-2026-45741 is a high vulnerability published on May 29, 2026. Gotenberg is a Docker-powered stateless API for PDF files. In 8.32.0 and earlier, the IsPublicIP function in pkg/gotenberg/outbound.go does not reject the 2002::/16 6to4 prefix, the 64:ff9b::/96 and 64:ff9b:1::/48 NAT64 prefixes, the fec0::/10 deprecated site-local prefix, Teredo, and other…
When was CVE-2026-45741 disclosed?
CVE-2026-45741 was first published in the National Vulnerability Database on May 29, 2026, with the most recent update on August 19, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45741 actively exploited?
CVE-2026-45741 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 43.5% of all scored CVEs.
What is the CVSS score of CVE-2026-45741?
CVE-2026-45741 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45741?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45741, 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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