Description
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.
References8
- github.com/plone/volto/releases/tag/18.27.2
- github.com/plone/volto/commit/58d9f82d2d50ca9a87edbe16fed91762e…
- github.com/plone/volto/pull/7412
- github.com/plone/volto/pull/7413
- github.com/plone/volto/releases/tag/16.34.1
- github.com/plone/volto/releases/tag/17.22.2
- github.com/plone/volto/releases/tag/19.0.0-alpha.6
- github.com/plone/volto/security/advisories/GHSA-m8rj-ppph-mj33
Metrics
- CVSS 4.0
-
8.7
HIGH
Score source: CNA
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/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X - EPSS — exploit probability
- 0% percentile: 38 · as of 9 November 2026
- CWE
- CWE-476CWE-754
Could this be exploited in your environment?
A patch closes the known hole. A penetration test shows what an attacker can still reach — with proof.