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.

The remote Fedora 41 host has packages installed that are affected by a vulnerability as referenced in the FEDORA-2025-ef1d49c67b advisory.

    pandoc-cli:

    - enable pandoc server (semantically safe) with pandoc-server-0.1.0.5

    pandoc:

    - apply upstream patch to avoid error with ConTeXt (#2365309)       https://github.com/jgm/pandoc/issues/9820




Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The remote Fedora 42 host has a package installed that is affected by a vulnerability as referenced in the FEDORA-2025-07fdd73bf0 advisory.

    update MANUAL to cover threat related to user HTML iframe


Tenable has extracted the preceding description block directly from the Fedora security advisory.

Note that Nessus has not tested for this issue but has instead relied only on the application's self-reported version number.

The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - 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.
    (CVE-2025-51591)

Note that Nessus relies on the presence of the package as reported by the vendor.

ID	Name	Product	Family	Type	Severity
269691	Fedora 41 : pandoc / pandoc-cli (2025-ef1d49c67b)	Nessus	Fedora Local Security Checks	Local	low
249975	Fedora 42 : pandoc (2025-07fdd73bf0)	Nessus	Fedora Local Security Checks	Local	medium
247064	Linux Distros Unpatched Vulnerability : CVE-2025-51591	Nessus	Misc.	Local	low

Detections

Analytics

CVE-2025-51591

low

Tenable Plugins

low

medium

low