CVE-2012-2965: Caucho Quercus, as distributed in Resin before 4.0.29, does not properly handle unspecified characters in t...

Security readout for executives and security teams

This issue affects Caucho Quercus bundled with Resin before 4.0.29. It mishandles certain characters in variable names, creating an HTTP Parameter Contamination condition. The public record lists remote attack vectors, but the impact is explicitly unknown, so urgency depends on whether affected Resin/Quercus services are exposed. Likely exposure is limited to environments running Caucho Resin with Quercus before 4.0.29, especially internet-facing applications that process user-controlled HTTP parameters. The source bundle does not identify affected CPEs or downstream packaged products. Treat this as an exposure-verification item, not a confirmed emergency. If legacy Resin/Quercus is internet-facing, prioritize upgrade assessment because the issue is remotely reachable and old components often lack support. Mitigation focus: Inventory Resin and Quercus deployments and identify versions earlier than 4.0.29.; Check Caucho Resin change notes or vendor guidance for the exact remediation release.; Prioritize upgrade planning for externally reachable Resin/Quercus applications..

Prepared

Jun 27, 2026, 17:28 UTC (UTC+00:00)

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