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Not in CISA KEV
MEDIUM severity

CVE-2021-44217 — codechecker

MEDIUMFix: Ericsson/codechecker#3549

CVE-2021-44217 is a medium-severity (CVSS 6.1) Cross-site Scripting (XSS) vulnerability in codechecker. 1 public exploit or proof-of-concept reference is indexed, so weaponization risk is real. A fix is available for codechecker — see the affected versions and patch details below.

Cross-site Scripting in Ericsson CodeChecker

Also known asGHSA-fxmx-pfm2-85m2PYSEC-2022-43181PYSEC-2026-625
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
1 known
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
1.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs77th percentile — riskier than 77% of all scored CVEsHighest risk
0.24%0.88%1.51%2.15%0.7%1.6%May 26Sep 26Nov 26

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

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected
🐍codechecker

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

In Ericsson CodeChecker prior to 6.18.2, a Stored Cross-site scripting (XSS) vulnerability in the comments component of the reports viewer allows remote attackers to inject arbitrary web script or HTML via the POST JSON data of the /CodeCheckerService API.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐍PyPIcodecheckerall versions6.18.2pip install --upgrade 'codechecker==6.18.2'

Affected Products

1 product · 1 configurations
Application
codecheckerericsson
≤ 6.18.0
range
Exploits & PoCs
1

Research use only. For defensive security, authorized penetration testing, and academic research only. Never execute exploit code against systems without explicit written authorization.

In Ericsson CodeChecker through 6.18.0, a Stored Cross-site scripting (X…

github.comNVDJan 2022

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update codechecker to 6.18.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2021-44217 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

In Ericsson CodeChecker prior to 6.18.2, a Stored Cross-site scripting (XSS) vulnerability in the comments component of the reports viewer allows remote attackers to inject arbitrary web script or HTML via the POST JSON data of the /CodeCheckerService API.
O3 Security · Impact-Aware SCA

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CVE-2021-44217: codechecker XSS — Fixed in 6.18.2