Is craftcms/cms affected by CVE-2026-31857?

Packagist craftcms/cms is affected in >=5.0.0-RC1 =4.0.0-beta.1 <4.17.4.

Is CVE-2026-31857 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.7%.

high

CVE-2026-31857

Q: Is CVE-2026-31857 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.7%.

Packagist · craftcms/cms

Summary

CraftCMS has an RCE vulnerability via relational conditionals in the control panel

Severity: high
EPSS: 0.7% (p47)
Also known as: GHSA-fp5j-j7j4-mcxc
Published: 2026-03-11

References

Related advisories

CVE-2026-28697 — critical · Packagist/craftcms/cms
CVE-2025-32432 — critical · Packagist/craftcms/cms
CVE-2024-56145 — critical · Packagist/craftcms/cms
CVE-2024-37843 — critical · Packagist/craftcms/cms
CVE-2026-44012 — high · Packagist/craftcms/cms
CVE-2026-44011 — high · Packagist/craftcms/cms
CVE-2026-44010 — high · Packagist/craftcms/cms
CVE-2026-33157 — high · Packagist/craftcms/cms

Is your project exposed to this? Stateward checks every dependency on every pull request and flags it only if your code actually reaches it.

Check my repo

Summarize with AI

ChatGPT Claude Perplexity

Sources: CISA KEV (public domain), OSV.dev & GitHub Advisory Database (CC-BY-4.0), FIRST EPSS, NVD/CWE (public domain). Served live from the Stateward advisory database.