How severe is GHSA-9jjx-3hq3-hx4j?

No CVSS score has been assigned to GHSA-9jjx-3hq3-hx4j yet. Review the advisory details and affected package list to assess your exposure.

Which packages are affected by GHSA-9jjx-3hq3-hx4j?

Affected package information for GHSA-9jjx-3hq3-hx4j is not yet fully mapped. Check the official advisory links for details.

How do I fix GHSA-9jjx-3hq3-hx4j?

Upgrade the affected component to the fixed release for GHSA-9jjx-3hq3-hx4j, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.

How do I detect GHSA-9jjx-3hq3-hx4j in my code and dependencies?

Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).

How do I mitigate GHSA-9jjx-3hq3-hx4j if there is no patch (or I can't update yet)?

Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Is GHSA-9jjx-3hq3-hx4j actively exploited in the wild?

No public exploit code has been indexed for GHSA-9jjx-3hq3-hx4j yet. This does not mean the vulnerability cannot be exploited — absence of public exploits does not imply safety. Apply the recommended fix and use O3 Security to monitor your exposure.

What is the EPSS score for GHSA-9jjx-3hq3-hx4j?

GHSA-9jjx-3hq3-hx4j has an EPSS (Exploit Prediction Scoring System) score of 0.4%, placing it in the 32th percentile of all CVEs. EPSS is maintained by FIRST.org and estimates the probability that a vulnerability will be exploited in the wild within the next 30 days. This score indicates relatively lower exploitation probability, though the CVSS severity should still guide your patching priority.

What type of vulnerability is GHSA-9jjx-3hq3-hx4j?

GHSA-9jjx-3hq3-hx4j is classified as Path Traversal (CWE-22). This weakness type describe the underlying flaw category, which helps determine the potential impact and the right class of mitigation. This is a high-impact weakness class that often enables remote code execution or data exposure.

When was GHSA-9jjx-3hq3-hx4j published, and has it been updated?

GHSA-9jjx-3hq3-hx4j was published on October 22, 2026 and was last updated on October 24, 2026. Advisory data evolves as severity scores, affected ranges, and exploit intelligence are revised — always check the latest version of the advisory before acting.

Mistune before 3.3.0 Path Traversal via include Directive

EPSS Exploitation Probability

via FIRST.org ↗

0.4%probability of exploitation in next 30 days

Lower Risk0.00%

Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

Description

Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.

Detection & mitigation playbook

Vulnerability

Detect
Identify every host running the affected component and compare the installed build against the fixed version below — for source-built or distro-packaged software the version string, not a lockfile, is the source of truth (`dpkg -l`, `rpm -q`, or the binary's own `--version`).
Fix
Upgrade the affected component to the fixed release for GHSA-9jjx-3hq3-hx4j, or apply your distribution's backported patch — distro builds are often patched at an older version number, so check your vendor's advisory rather than the upstream version alone.
Workarounds
Resolve every user-supplied path to its canonical form and reject anything that escapes the intended directory, and run the component under an account that has no read or write access outside the directory it legitimately serves.

Frequently Asked Questions

Mistune before 3.3.0 contains a path traversal vulnerability in the RST include directive that allows attackers to read arbitrary files by supplying relative or absolute paths. Attackers can submit markdown containing include directives referencing ../ sequences or absolute paths to embed sensitive files like credentials or environment data in rendered HTML.

O3 Security · Impact-Aware SCA

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Mistune before 3.3.0 Path Traversal via include DirectiveGHSA-9jjx-3hq3-hx4j

EPSS Exploitation Probability

Description

Detection & mitigation playbook

Detect

Fix

Workarounds

Frequently Asked Questions

Is GHSA-9jjx-3hq3-hx4j in your dependencies?