Is apostrophe affected by CVE-2026-39857?

npm apostrophe is affected in <4.29.0.

Is CVE-2026-39857 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

medium

CVE-2026-39857

Q: Is CVE-2026-39857 being exploited?

Not on the CISA KEV list. EPSS exploit probability is 0.4%.

npm · apostrophe

Summary

ApostropheCMS: Information Disclosure via choices/counts Query Parameters Bypassing publicApiProjection Field Restrictions

Severity: medium
EPSS: 0.4% (p35)
Also known as: GHSA-c276-fj82-f2pq
Published: 2026-04-16

References

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-c276-fj82-f2pq
https://nvd.nist.gov/vuln/detail/CVE-2026-39857
https://github.com/apostrophecms/apostrophe/commit/6c2b548dec2e3f7a82e8e16736603f4cd17525aa

Related advisories

CVE-2026-45013 — high · npm/apostrophe
CVE-2026-45012 — high · npm/apostrophe
CVE-2026-35569 — high · npm/apostrophe
CVE-2026-33889 — medium · npm/apostrophe
CVE-2026-33888 — medium · npm/apostrophe

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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.