CVE-2026-42593
CVE-2026-42593 is a medium-severity vulnerability in Thecodingmachine Gotenberg with a CVSS 3.x base score of 5.3. 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-22.
Key facts
- Severity: Medium (CVSS 3.x base score 5.3)
- EPSS exploit prediction: 0% (23rd percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2026-30314
- Weakness: CWE-22
- Affected product: Thecodingmachine Gotenberg
- Published:
- Last modified:
Description
Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, pdfengines/merge, pdfengines/split, libreoffice/convert, chromium/convert/url, chromium/convert/html, and chromium/convert/markdown accept stampSource=pdf + stampExpression=/path and watermarkSource=pdf + watermarkExpression=/path from anonymous callers. The dedicated stamp/watermark routes require an uploaded file when the source type is image or pdf; these six routes only overwrite the expression when a file is uploaded, leaving the user-controlled path intact when no file is attached. pdfcpu opens the path and composites its pages onto the output PDF, which returns to the caller. An attacker reads any PDF the Gotenberg process can access on the container filesystem. This vulnerability is fixed in 8.32.0.
Frequently asked questions
- What is CVE-2026-42593?
- Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.32.0, pdfengines/merge, pdfengines/split, libreoffice/convert, chromium/convert/url, chromium/convert/html, and chromium/convert/markdown accept stampSource=pdf + stampExpression=/path and watermarkSource=pdf + watermarkExpression=/path from anonymous callers. The dedicated stamp/watermark routes require an uploaded file when the source type is image or pdf; these six routes only overwrite the expression when a file is uploaded, leaving the user-controlled path intact when no file is attached. pdfcpu opens the path and composites its pages onto the output PDF, which returns to the caller. An attacker reads any PDF the Gotenberg process can access on the container filesystem. This vulnerability is fixed in 8.32.0.
- How severe is CVE-2026-42593?
- CVE-2026-42593 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
- Is CVE-2026-42593 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (23rd percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2026-42593?
- CVE-2026-42593 affects Thecodingmachine Gotenberg. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2026-42593?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2026-42593 have an EU (EUVD) identifier?
- Yes. CVE-2026-42593 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-30314.
- When was CVE-2026-42593 published?
- CVE-2026-42593 was published on 2026-05-14 and last updated on 2026-06-17.
References
Affected products (1)
- cpe:2.3:a:thecodingmachine:gotenberg:*:*:*:*:*:*:*:*
More vulnerabilities in Thecodingmachine Gotenberg
- CVE-2026-40281 — Critical (CVSS 10.0): Gotenberg is a Docker-powered stateless API for PDF files. In versions 8.30.1 and earlier, the metadata write endpoint…
- CVE-2026-42589 — Critical (CVSS 9.8): Gotenberg is a Docker-powered stateless API for PDF files. Prior to 8.31.0, Gotenberg's…
- CVE-2026-35458 — Critical (CVSS 9.8): Gotenberg is an API for converting document formats. In 8.29.1 and earlier, Gotenberg uses dlclark/regexp2 to compile…
- CVE-2020-13452 — Critical (CVSS 9.8): In Gotenberg through 6.2.1, insecure permissions for tini (writable by user gotenberg) potentially allow an attacker to…
- CVE-2020-13451 — Critical (CVSS 9.8): An incomplete-cleanup vulnerability in the Office rendering engine of Gotenberg through 6.2.1 allows an attacker to…
- CVE-2020-13450 — Critical (CVSS 9.8): A directory traversal vulnerability in file upload function of Gotenberg through 6.2.1 allows an attacker to upload and…
All CVEs affecting Thecodingmachine Gotenberg →
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