CVE-2026-55229

HIGHPre-NVD 7.57.5—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.5 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 1.5%, top 27% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).

Triggered by: NVD CVSS baseline
Sources: epss, 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: 2%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. Prior to 8.34.0, Gotenberg's /forms/libreoffice/convert endpoint allows a specially crafted document to cause LibreOffice to automatically retrieve external HTTP(S) resources and local file resources during document conversion, enabling blind SSRF and limited local file disclosure via linked image resource loading. This issue is fixed in version 8.34.0.

CVSS v3
7.5
EG Score
7.5(medium)
EG Risk
65(Attend)
EG Risk 65/100SSVC: Attend

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%
Automatability100% × 15%
Action: Remediate soon — notable exploitation risk.
EPSS PROB
2%
EPSS %ILE
73%
KEV
Not listed

Published

June 18, 2026

Last Modified

July 13, 2026

Advisory Details (3)

Auto-updated Jul 10, 2026
🔬 Proof of concept available. Patch available. Sources: github_commit, github_release, github.
github Patch Available🟡 PoC Available

SSRF via LibreOffice document processing in Gotenberg · Advisory · gotenberg/gotenberg · GitHub

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-2mrg-35hw-x3x9
github_release Patch Available

8.34.0

Patch available: gotenberg/gotenberg v8.34.0

https://github.com/gotenberg/gotenberg/releases/tag/v8.34.0
github_commit Patch Available

commit 98fc40347885 (gotenberg/gotenberg)

Patch available: gotenberg/gotenberg v8.34.0 (contains commit 98fc40347885)

https://github.com/gotenberg/gotenberg/commit/98fc40347885ad510a311b990a73397c6d4143db

Vendor Advisories for CVE-2026-55229(1)

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

Affected Packages

(2 across 1 ecosystem)
Go(2)
PackageVulnerable rangeFixed inDependents
github.com/gotenberg/gotenberg/v7———
github.com/gotenberg/gotenberg/v8—8.34.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 5× in last 7d / 27× 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.

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

Publicly available exploits

(1 reference)

Working exploit code is in the public domain. Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

  • Nucleihttp/cves/2026/CVE-2026-55229.yaml
    First seen Jan 1, 2026

    Gotenberg < 8.34.0 - Local File Disclosure

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-55229?
CVE-2026-55229 is a high vulnerability published on June 18, 2026. Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.34.0, Gotenberg's /forms/libreoffice/convert endpoint allows a specially crafted document to cause LibreOffice to automatically retrieve external HTTP(S) resources and local file resources during document conversion, enabling…
When was CVE-2026-55229 disclosed?
CVE-2026-55229 was first published in the National Vulnerability Database on June 18, 2026, with the most recent update on July 13, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-55229 actively exploited?
CVE-2026-55229 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 2% probability of exploitation in the next 30 days, which ranks it in the top 26.6% of all scored CVEs.
What is the CVSS score of CVE-2026-55229?
CVE-2026-55229 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-55229?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-55229, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-55229

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