CVE-2025-51591

Description

A Server-Side Request Forgery (SSRF) in JGM Pandoc v3.6.4 allows attackers to gain access to and compromise the whole infrastructure via injecting a crafted iframe. Note: Some users have stated that Pandoc by default can retrieve and parse untrusted HTML content which can enable SSRF vulnerabilities. Using the ‘--sandbox’ option or ‘pandoc-server’ can mitigate such vulnerabilities. Using pandoc with an external ‘--pdf-engine’ can also enable SSRF vulnerabilities, such as CVE-2022-35583 in wkhtmltopdf.

CVSS v3.1 Score

3.7

LOW

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:L/I:N/A:N

Weakness Type (CWE)

CWE-918 Server-Side Request Forgery (SSRF)

References

Other References

http://jgm.com http://pandoc.com https://github.com/RealestName/Vulnerability-Research/tree/main/CVE-2025-51591 https://github.com/jgm/pandoc/discussions/11200 https://github.com/jgm/pandoc/issues/10682 https://github.com/jgm/pandoc/issues/11261 https://github.com/jgm/pandoc/issues/8874 https://github.com/jgm/pandoc/pull/11262 https://www.wiz.io/blog/imds-anomaly-hunting-zero-day https://github.com/jgm/pandoc/commit/67edf7ce7cd3563a180ae44bd122b012e22364f8

Frequently Asked Questions

What is CVE-2025-51591? +

A Server-Side Request Forgery (SSRF) in JGM Pandoc v3.6.4 allows attackers to gain access to and compromise the whole infrastructure via injecting a crafted iframe. Note: Some users have stated that Pandoc by default can retrieve and parse untrusted HTML content which can enable SSRF vulnerabilities. Using the ‘--sandbox’ option or ‘pandoc-server’ can mitigate such vulnerabilities. Using pandoc with an external ‘--pdf-engine’ can also enable SSRF vulnerabilities, such as CVE-2022-35583 in wkhtmltopdf. It has a CVSS v3.1 base score of 3.7 (LOW).

How severe is CVE-2025-51591? +

CVE-2025-51591 has a CVSS v3.1 score of 3.7 out of 10, rated LOW. This is a low-severity vulnerability with limited impact.

How do I check if I'm vulnerable to CVE-2025-51591? +

You can use Secably's free Website Scanner to check your website for known vulnerabilities. For infrastructure scanning, use the Port Scanner to identify exposed services that may be affected. Check the vendor advisories linked above for specific patch and version information.

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