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CVE-2026-44633

Live Helper Chat: REST API chat update accepts arbitrary chat fields across department boundaries

Published: May 14, 2026Updated: May 15, 2026 Sources: CVE List NVDCWE-863
8.1HIGH
NVD MITRE
EPSS Score
0.3%
Top 81.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available

Description

Live Helper Chat is an open-source application that enables live support websites. In 4.84v, the Live Helper Chat REST API chat update endpoint allows a REST user with lhchat/use to update a chat in a department they cannot read. The endpoint accepts arbitrary chat object fields, so the user can change the chat hash and status and then access or tamper with the chat through visitor/widget paths. The same write primitive can set operation_admin, which is later emitted as operator-side JavaScript.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:LUI:NS:UC:HI:HA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:LPrivileges Required
Low
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:NAvailability
None
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Weaknesses

CWE-863

Affected Products

livehelperchatLiveHelperChat
On-premWeb App
Communications / messaging-chat
livehelperchatoss-projectCommunicationsaka live helper chat, livehelperchat/livehelperchat, livehelperchat

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

2 techniques
Initial Access
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References

https://github.com/LiveHelperChat/livehelperchat/security/advisories/GHSA-hjqq-qmvj-9whm
github.com

Timeline

Published
May 14, 2026
Last Updated
May 15, 2026

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