What is CVE-2026-42589?

CVE-2026-42589 is a critical-severity vulnerability in Gotenberg, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-05-14.

How severe is CVE-2026-42589?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2026-42589 known to be exploited?

1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

RCE in Gotenberg

CVE-2026-42589

Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg's /forms/pdfengines/metadata/write HTTP endpoint accepts a JSON metadata object and passes its keys directly to ExifTool via the go-exiftool library. No…

Vulnerability class: Command Injection (OS Command Injection)

EPSS: 0.088 (92.7th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gotenberg — versions < 8.31.0
Thecodingmachine Gotenberg

Weakness classification (CWE)

CWE-78 — OS Command Injection

Public proof-of-concept exploits

fineman999/POC_CVE-2026-42589

References

security-advisories@github.com (x_refsource_CONFIRM, Exploit, Mitigation, Vendor Advisory)

Frequently asked questions

What is CVE-2026-42589?: CVE-2026-42589 is a critical-severity vulnerability in Gotenberg, classified under OS Command Injection. CVSS score: 9.8/10. Published 2026-05-14.
How severe is CVE-2026-42589?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2026-42589 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.