What is CVE-2026-33888?

CVE-2026-33888 is a medium-severity vulnerability in Apostrophecms Apostrophe, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-04-15.

How severe is CVE-2026-33888?

Medium severity. CVSS v3 base score is 5.3 out of 10.

Auth bypass in Apostrophecms Apostrophe

CVE-2026-33888

ApostropheCMS is an open-source Node.js content management system. Versions 4.28.0 and prior contain an authorization bypass vulnerability in the getRestQuery method of the @apostrophecms/piece-type module, where the method checks whether…

Vulnerability class: Broken Access Control

EPSS: 0.001 (29.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.3 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

Affected products

Apostrophecms Apostrophe — versions < 4.29.0

Weakness classification (CWE)

References

https://github.com/apostrophecms/apostrophe/security/advisories/GHSA-xhq9-58fw-859p (x_refsource_CONFIRM)
https://github.com/apostrophecms/apostrophe/commit/00d472804bb622df36a761b6f2cf2b33b2d4ce80 (x_refsource_MISC)
https://github.com/apostrophecms/apostrophe/commit/6c2b548dec2e3f7a82e8e16736603f4cd17525aa (x_refsource_MISC)

Frequently asked questions

What is CVE-2026-33888?: CVE-2026-33888 is a medium-severity vulnerability in Apostrophecms Apostrophe, classified under Incorrect Authorization. CVSS score: 5.3/10. Published 2026-04-15.
How severe is CVE-2026-33888?: Medium severity. CVSS v3 base score is 5.3 out of 10.