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MEDIUM severity

CVE-2022-27193 — cvrf2csaf

MEDIUM

CVE-2022-27193 is a medium-severity (CVSS 6.1) XML External Entity (XXE) vulnerability in cvrf2csaf. A fix is available for cvrf2csaf — see the affected versions and patch details below.

XML External Entities Vulnerability in CVRF-CSAF-Converter

Also known asGHSA-m8gq-83gh-v42vPYSEC-2026-627
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 7, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.7%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs51th percentile — riskier than 51% of all scored CVEsHighest risk

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

How urgent is this, really

CVE-2022-27193 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,386 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Counts from FIRST.org, log-scaled.

Real-World Exposure

1 pkg affected
🐍cvrf2csaf

Real-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.

Description

CVRF-CSAF-Converter before 1.0.0-rc2 resolves XML External Entities (XXE). This leads to the inclusion of arbitrary (local) file content into the generated output document. An attacker can exploit this to disclose information from the system running the converter.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIcvrf2csafall versions1.0.0rc2pip install --upgrade 'cvrf2csaf==1.0.0rc2'

Affected Products

1 product · 5 configurations
Application
cvrf-csaf-convertercvrf-csaf-converter_project
1 version
1.0.0

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for cvrf2csaf, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update cvrf2csaf to 1.0.0rc2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2022-27193 is resolved across your whole dependency graph.

  3. Workarounds

    If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.

Frequently Asked Questions

CVRF-CSAF-Converter before 1.0.0-rc2 resolves XML External Entities (XXE). This leads to the inclusion of arbitrary (local) file content into the generated output document. An attacker can exploit this to disclose information from the system running the converter.
O3 Security · Impact-Aware SCA

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CVE-2022-27193: cvrf2csaf — Fixed in 1.0.0rc2