Is baserproject/basercms affected by CVE-2026-30940?

Packagist baserproject/basercms is affected in <5.2.3.

Is CVE-2026-30940 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 1.0%.

high

CVE-2026-30940

Q: Is CVE-2026-30940 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 1.0%.

Packagist · baserproject/basercms

Summary

baserCMS Path Traversal Leads to Arbitrary File Write and RCE via Theme File API

Severity: high
EPSS: 1.0% (p60)
Also known as: GHSA-c5c6-37vq-pjcq
Published: 2026-03-31

References

Related advisories

CVE-2026-30880 — critical · Packagist/baserproject/basercms
CVE-2026-30877 — critical · Packagist/baserproject/basercms
CVE-2026-21861 — critical · Packagist/baserproject/basercms
CVE-2026-32734 — high · Packagist/baserproject/basercms
CVE-2025-32957 — high · Packagist/baserproject/basercms
CVE-2026-30879 — medium · Packagist/baserproject/basercms
CVE-2026-30878 — medium · Packagist/baserproject/basercms
CVE-2026-27697 — medium · Packagist/baserproject/basercms

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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.