Volto is a ReactJS-based frontend for the Plone Content Management System. Versions 16.34.0 and below, 17.0.0 through 17.22.1, 18.0.0 through 18.27.1, and 19.0.0-alpha.1 through 19.0.0-alpha.5, an anonymous user could cause the NodeJS server part of Volto to quit with an error when visiting a specific URL. This issue is fixed in versions 16.34.1, 17.22.2, 18.27.2 and 19.0.0-alpha.6.
https://github.com/plone/volto/security/advisories/GHSA-m8rj-ppph-mj33
https://github.com/plone/volto/releases/tag/19.0.0-alpha.6
https://github.com/plone/volto/releases/tag/17.22.2
https://github.com/plone/volto/releases/tag/16.34.1
https://github.com/plone/volto/pull/7413
https://github.com/plone/volto/pull/7412
https://github.com/plone/volto/commit/58d9f82d2d50ca9a87edbe16fed91762e57c109c
Published: 2025-10-02
Updated: 2026-04-15
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 7.5
Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: High
Base Score: 8.7
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
Severity: High
EPSS: 0.00051