CVE-2013-5958: The Security component in Symfony 2.0.x before 2.0.25, 2.1.x before 2.1.13, 2.2.x before 2.2.9, and 2.3.x b...

Security readout for executives and security teams

Older Symfony 2 applications can be forced to spend excessive CPU processing an unusually long password during authentication. This can slow or interrupt service availability, especially on public login pages. The source bundle identifies fixed Symfony releases, but provides no CVSS score or evidence of active exploitation. Exposure is most likely in legacy Symfony 2 applications with internet-accessible authentication flows using affected Security component versions. The bundle lists affected versions in the CVE description, while the structured affected product metadata is incomplete. Prioritize remediation for any public legacy Symfony 2 application. This is an availability risk rather than a data-theft issue in the provided sources, but public authentication surfaces can make service disruption cheap and repeatable. Mitigation focus: Upgrade Symfony to 2.0.25, 2.1.13, 2.2.9, 2.3.6, or later supported versions.; Review the Symfony security release advisory for version-specific guidance.; Prioritize public login and password-checking surfaces first..

Prepared

Jun 14, 2026, 05:41 UTC (UTC+00:00)

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.