Description
Volto is a React based frontend for the Plone Content Management System. In versions from 19.0.0-alpha.1 to before 19.0.0-alpha.4, 18.0.0 to before 18.24.0, 17.0.0 to before 17.22.1, and prior to 16.34.0, an anonymous user could cause the NodeJS server part of Volto to quit with an error when visiting a specific URL. The problem has been patched in versions 16.34.0, 17.22.1, 18.24.0, and 19.0.0-alpha.4. To mitigate downtime, have setup automatically restart processes that quit with an error.
References7
- github.com/plone/volto/commit/2789a287ac45ad9039fb9161d465ba132…
- github.com/plone/volto/releases/tag/16.34.0
- github.com/plone/volto/releases/tag/17.22.1
- github.com/plone/volto/releases/tag/18.24.0
- github.com/plone/volto/releases/tag/19.0.0-alpha.4
- github.com/plone/volto/security/advisories/GHSA-xjhf-7833-3pm5
- www.openwall.com/lists/oss-security/2025/08/28/3
Metrics
- CVSS 3.1
-
7.5
HIGH
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H - EPSS — exploit probability
- 1% percentile: 52 · as of 8 November 2026
- CWE
- CWE-755
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.