Medium severity6.5NVD Advisory· Published Nov 3, 2026· Updated Nov 3, 2026
CVE-2026-121602
CVE-2026-121602
Description
Solanum before commit 2ce64de contains a heap-based buffer overflow vulnerability that allows a malicious linked server to corrupt memory by sending overlong channel names in JOIN or SJOIN messages. Attackers controlling a peer server can trigger strcpy and sprintf overflows in ms_join and ms_sjoin to crash the ircd or potentially achieve remote code execution.
Affected products
1- Range: < commit 2ce64de
Patches
Vulnerability mechanics
References
5- github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/ircd/channel.cnvd
- github.com/solanum-ircd/solanum/blob/2ea1382e4262b212a91034258c466f0f6754cd61/modules/core/m_join.cnvd
- github.com/solanum-ircd/solanum/commit/2ce64debf65e9710e9eea099ada93dbf6655b5ffnvd
- github.com/solanum-ircd/solanum/pull/551nvd
- www.vulncheck.com/advisories/solanum-before-commit-2ce64de-heap-buffer-overflow-via-join-and-sjoinnvd
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