How severe is CVE-2026-42597?

CVE-2026-42597 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2026-42597 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-42597?

CVE-2026-42597 affects Thecodingmachine Gotenberg. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-42597?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-42597 have an EU (EUVD) identifier?

Yes. CVE-2026-42597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30317.

When was CVE-2026-42597 published?

CVE-2026-42597 was published on 2026-05-14 and last updated on 2026-06-17.

CVE-2026-42597

CVE-2026-42597 is a medium-severity vulnerability in Thecodingmachine Gotenberg with a CVSS 3.x base score of 5.9. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-73.

Key facts

Severity: Medium (CVSS 3.x base score 5.9)
EPSS exploit prediction: 0% (16th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-30317
Weakness: CWE-73
Affected product: Thecodingmachine Gotenberg
Published: 2026-05-14
Last modified: 2026-06-17

Description

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can load their own request-local assets, and those routes apply a per-request AllowedFilePrefixes guard to scope the read. The URL routes never set AllowedFilePrefixes, so the scope guard silently skips. Alice enumerates /tmp/, walks Gotenberg's per-request working directories, and reads the raw source files of other in-flight conversions as rendered PDF output. This vulnerability is fixed in 8.32.0.

Frequently asked questions

What is CVE-2026-42597?: Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, the /forms/chromium/convert/url and /forms/chromium/screenshot/url routes accept url=file:///tmp/... from anonymous callers. The default Chromium deny-list intentionally exempts file:///tmp/ so HTML/Markdown routes can load their own request-local assets, and those routes apply a per-request AllowedFilePrefixes guard to scope the read. The URL routes never set AllowedFilePrefixes, so the scope guard silently skips. Alice enumerates /tmp/, walks Gotenberg's per-request working directories, and reads the raw source files of other in-flight conversions as rendered PDF output. This vulnerability is fixed in 8.32.0.
How severe is CVE-2026-42597?: CVE-2026-42597 has a CVSS 3.x base score of 5.9, rated medium severity. It is exploitable over network with high attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2026-42597 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (16th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-42597?: CVE-2026-42597 affects Thecodingmachine Gotenberg. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-42597?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-42597 have an EU (EUVD) identifier?: Yes. CVE-2026-42597 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30317.
When was CVE-2026-42597 published?: CVE-2026-42597 was published on 2026-05-14 and last updated on 2026-06-17.

References

https://github.com/gotenberg/gotenberg/security/advisories/GHSA-g924-cjx7-2rjw

Affected products (1)

cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:*

More vulnerabilities in Thecodingmachine Gotenberg

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