CVE-2012-5534: The hook_process function in the plugin API for WeeChat 0.3.0 through 0.3.9.1 allows remote attackers to ex...

Security readout for executives and security teams

Older WeeChat releases could let attacker-controlled text reach a plugin API call that used shell expansion. If a plugin passed remote input into hook_process, shell metacharacters could be interpreted as commands, potentially allowing command execution as the WeeChat user. Exposure is most likely on systems running WeeChat 0.3.0 through 0.3.9.1, especially where plugins process remote content and call hook_process with data influenced by that content. Treat this as a targeted legacy exposure issue. It is serious where old WeeChat clients and risky plugins remain, but urgency depends on whether vulnerable versions are still deployed. Mitigation focus: Inventory WeeChat versions and identify any 0.3.0 through 0.3.9.1 installations.; Follow WeeChat or distribution vendor guidance for patched packages or fixed releases.; Prioritize systems using plugins that process remote or untrusted content..

Prepared

Jun 24, 2026, 12:04 UTC (UTC+00:00)

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