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CVE-2026-35458

Thecodingmachine Gotenberg vulnerability

9.8 CRITICALPublic exploitEPSS 0.61%
  1. Published7 Apr 2026

Description

Gotenberg is an API for converting document formats. In 8.29.1 and earlier, Gotenberg uses dlclark/regexp2 to compile user-supplied scope patterns without setting a proper timeout. Users with access to features using this logic can hang workers indefinitely.

CVSS 3.1 breakdown

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

Affected products

Thecodingmachine Gotenberg< 8.29.1

Remediation

Fixed in
Thecodingmachine Gotenberg≥ 8.29.1

References

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Frequently asked

Is CVE-2026-35458 being actively exploited?

CVE-2026-35458 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.61%.

How severe is CVE-2026-35458?

CVE-2026-35458 has a CVSS 3.1 base score of 9.8, rated critical. EPSS estimates a 0.61% probability of exploitation.

Which products are affected by CVE-2026-35458?

Affected products include Thecodingmachine Gotenberg.

How do I fix CVE-2026-35458?

Upgrade affected software to a fixed version, for example Thecodingmachine Gotenberg 8.29.1 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2026-35458 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.