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Not in CISA KEV
HIGH severity

CVE-2020-23264 — forkcms

HIGHFix: forkcms/forkcms#3123

CVE-2020-23264 is a high-severity (CVSS 8.8) Cross-Site Request Forgery (CSRF) vulnerability in forkcms/forkcms. A fix is available for forkcms/forkcms — see the affected versions and patch details below.

Cross-Site Request Forgery in forkcms

Also known asGHSA-82xf-8h9p-c6qj
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Oct 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

EPSS Exploitation Probability

via FIRST.org ↗
0.6%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs49th percentile — riskier than 49% of all scored CVEsHighest risk
0.00%0.38%0.75%1.13%0.1%0.6%Apr 26Aug 26Oct 26

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

How urgent is this, really

CVE-2020-23264 by exploitation likelihood (EPSS) against impact (CVSS). Outside the shaded patch-first corner.

Where this sits among everything scored

Of 385,738 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
🐘forkcms/forkcms

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

Description

Cross-site request forgery (CSRF) in Fork-CMS before 5.8.2 allow remote attackers to hijack the authentication of logged administrators.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
🐘Packagistforkcms/forkcmsall versions5.8.2composer require forkcms/forkcms:^5.8.2

Affected Products

1 product · 1 configurations
Application
fork cmsfork-cms
< 5.8.2
range

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Fix

    Update forkcms/forkcms to 5.8.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2020-23264 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

Cross-site request forgery (CSRF) in Fork-CMS before 5.8.2 allow remote attackers to hijack the authentication of logged administrators.
O3 Security · Impact-Aware SCA

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CVE-2020-23264: forkcms CSRF — Fixed in 5.8.2