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CVE-2026-42591

Thecodingmachine Gotenberg server-side request forgery (SSRF)

8.2 HIGHPublic exploitEPSS 0.35%
  1. Published14 May 2026

Description

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 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeUnchanged
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

Affected products

Thecodingmachine Gotenberg< 8.32.0

Remediation

Fixed in
Thecodingmachine Gotenberg≥ 8.32.0

References

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Frequently asked

Is CVE-2026-42591 being actively exploited?

CVE-2026-42591 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.35%.

How severe is CVE-2026-42591?

CVE-2026-42591 has a CVSS 3.1 base score of 8.2, rated high. EPSS estimates a 0.35% probability of exploitation.

Which products are affected by CVE-2026-42591?

Affected products include Thecodingmachine Gotenberg.

How do I fix CVE-2026-42591?

Upgrade affected software to a fixed version, for example Thecodingmachine Gotenberg 8.32.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-42591 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.