CVE-2026-27954
Description
Live Helper Chat is an open-source application that enables live support websites. In versions up to and including 4.52, three chat action endpoints (holdaction.php, blockuser.php, and transferchat.php) load chat objects by ID without calling erLhcoreClassChat::hasAccessToRead(), allowing operators to act on chats in departments they are not assigned to. Operators with the relevant role permissions (holduse, allowblockusers, allowtransfer) can hold, block users from, or transfer chats in departments they are not assigned to. This is a horizontal privilege escalation within one organization. As of time of publication, no known patched versions are available.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
3cpe:2.3:a:livehelperchat:live_helper_chat:*:*:*:*:*:*:*:*+ 1 more
- cpe:2.3:a:livehelperchat:live_helper_chat:*:*:*:*:*:*:*:*range: <=4.52
- (no CPE)range: <= 4.52
- Range: <=4.52
Patches
Vulnerability mechanics
References
1- github.com/LiveHelperChat/livehelperchat/security/advisories/GHSA-87wc-2p86-h3w7nvdMitigationVendor Advisory
News mentions
0No linked articles in our index yet.