How severe is CVE-2026-27625?

CVE-2026-27625 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.

Is CVE-2026-27625 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-27625?

CVE-2026-27625 affects Stirling Stirling Pdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-27625?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.

Does CVE-2026-27625 have an EU (EUVD) identifier?

Yes. CVE-2026-27625 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13638.

When was CVE-2026-27625 published?

CVE-2026-27625 was published on 2026-03-20 and last updated on 2026-06-17.

CVE-2026-27625

CVE-2026-27625 is a high-severity vulnerability in Stirling Stirling Pdf with a CVSS 3.x base score of 8.1. 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: High (CVSS 3.x base score 8.1)
EPSS exploit prediction: 0% (37th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-13638
Weakness: CWE-22
Affected product: Stirling Stirling Pdf
Published: 2026-03-20
Last modified: 2026-06-17

Description

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary working directory, leading to arbitrary file write with the privileges of the Stirling-PDF process user (stirlingpdfuser). This can overwrite writable files and compromise data integrity, with further impact depending on writable paths. The issue was fixed in version 2.5.2.

Frequently asked questions

What is CVE-2026-27625?: Stirling-PDF is a locally hosted web application that performs various operations on PDF files. In versions prior to 2.5.2, the /api/v1/convert/markdown/pdf endpoint extracts user-supplied ZIP entries without path checks. Any authenticated user can write files outside the intended temporary working directory, leading to arbitrary file write with the privileges of the Stirling-PDF process user (stirlingpdfuser). This can overwrite writable files and compromise data integrity, with further impact depending on writable paths. The issue was fixed in version 2.5.2.
How severe is CVE-2026-27625?: CVE-2026-27625 has a CVSS 3.x base score of 8.1, rated high severity. It is exploitable over network with low attack complexity, requires low privileges and no user interaction. Impact on confidentiality is none, integrity high, and availability high.
Is CVE-2026-27625 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (37th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-27625?: CVE-2026-27625 affects Stirling Stirling Pdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-27625?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
Does CVE-2026-27625 have an EU (EUVD) identifier?: Yes. CVE-2026-27625 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-13638.
When was CVE-2026-27625 published?: CVE-2026-27625 was published on 2026-03-20 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:stirling:stirling_pdf:*:*:*:*:*:*:*:*

More vulnerabilities in Stirling Stirling Pdf

CVE-2026-33438 — Medium (CVSS 6.5): Stirling-PDF is a locally hosted web application that allows you to perform various operations on PDF files. Versions…
CVE-2026-34071 — Medium (CVSS 5.4): Stirling-PDF is a locally hosted web application that allows you to perform various operations on PDF files. In version…

All CVEs affecting Stirling Stirling Pdf →

Other CWE-22 (Path Traversal) vulnerabilities

CVE-2026-48282 — Critical (CVSS 10.0): ColdFusion versions 2025.9, 2023.20 and earlier are affected by an Improper Limitation of a Pathname to a Restricted…
CVE-2026-54917 — Critical (CVSS 10.0): SeaweedFS is a distributed storage system for object storage (S3), file systems, and Iceberg tables. Prior to 4.30, the…
CVE-2026-11429 — Critical (CVSS 10.0): Two endpoints in the Vault Service ScriptsController, shared by Altium Enterprise Server and Altium 365, accept file…
CVE-2026-34909 — Critical (CVSS 10.0): A malicious actor with access to the network could exploit a Path Traversal vulnerability found in UniFi OS devices to…
CVE-2026-7411 — Critical (CVSS 10.0): In Eclipse BaSyx Java Server SDK versions prior to 2.0.0-milestone-10, inadequate path normalization in the Submodel…
CVE-2026-36767 — Critical (CVSS 10.0): A path traversal vulnerability in the /content/images/add endpoint of shopizer v3.2.5 allows attackers write arbitrary…

Browse all CWE-22 (Path Traversal) vulnerabilities →