How severe is CVE-2025-55161?

CVE-2025-55161 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.

Is CVE-2025-55161 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2025-55161?

CVE-2025-55161 affects Stirlingpdf Stirling Pdf. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2025-55161?

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-2025-55161 have an EU (EUVD) identifier?

Yes. CVE-2025-55161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24184.

When was CVE-2025-55161 published?

CVE-2025-55161 was published on 2025-08-11 and last updated on 2026-06-17.

CVE-2025-55161

CVE-2025-55161 is a high-severity vulnerability in Stirlingpdf Stirling Pdf with a CVSS 3.x base score of 8.6. 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-918.

Key facts

Severity: High (CVSS 3.x base score 8.6)
EPSS exploit prediction: 2% (77th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2025-24184
Weakness: CWE-918
Affected product: Stirlingpdf Stirling Pdf
Published: 2025-08-11
Last modified: 2026-06-17

Description

Stirling-PDF is a locally hosted web application that performs various operations on PDF files. Prior to version 1.1.0, when using the /api/v1/convert/markdown/pdf endpoint to convert Markdown to PDF, the backend calls a third-party tool to process it and includes a sanitizer for security sanitization which can be bypassed and result in SSRF. This issue has been patched in version 1.1.0.

Frequently asked questions

What is CVE-2025-55161?: Stirling-PDF is a locally hosted web application that performs various operations on PDF files. Prior to version 1.1.0, when using the /api/v1/convert/markdown/pdf endpoint to convert Markdown to PDF, the backend calls a third-party tool to process it and includes a sanitizer for security sanitization which can be bypassed and result in SSRF. This issue has been patched in version 1.1.0.
How severe is CVE-2025-55161?: CVE-2025-55161 has a CVSS 3.x base score of 8.6, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity low, and availability low.
Is CVE-2025-55161 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 2% (77th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2025-55161?: CVE-2025-55161 affects Stirlingpdf Stirling Pdf. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2025-55161?: 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-2025-55161 have an EU (EUVD) identifier?: Yes. CVE-2025-55161 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-24184.
When was CVE-2025-55161 published?: CVE-2025-55161 was published on 2025-08-11 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:stirlingpdf:stirling_pdf:*:*:*:*:*:*:*:*

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