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CVE-2026-42595

Thecodingmachine Gotenberg server-side request forgery (SSRF)

8.6 HIGHPublic exploitEPSS 0.42%
  1. Published14 May 2026

Description

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, Gotenberg's Chromium URL-to-PDF endpoint (/forms/chromium/convert/url) has no default protection against HTTP/HTTPS-based SSRF. The default deny-list regex only blocks file:// URIs. An unauthenticated attacker can point Chromium at any internal IP — including loopback, RFC 1918 ranges, and cloud metadata endpoints — and receive the response rendered as a PDF. Additionally, even when operators configure a custom deny-list, the protection is bypassed via HTTP redirects. Gotenberg's Chromium instance follows 302 redirects from an attacker-controlled external URL to internal targets without re-validating the redirect destination against the deny-list. This vulnerability is fixed in 8.32.0.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityHigh
IntegrityNone
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/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-2026-42595 being actively exploited?

CVE-2026-42595 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.42%.

How severe is CVE-2026-42595?

CVE-2026-42595 has a CVSS 3.1 base score of 8.6, rated high. EPSS estimates a 0.42% probability of exploitation.

Which products are affected by CVE-2026-42595?

Affected products include Thecodingmachine Gotenberg.

How do I fix CVE-2026-42595?

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-2026-42595 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.