Vulnerability details
CVE-2026-44633
LiveHelperChat livehelperchat
Live Helper Chat: REST API chat update accepts arbitrary chat fields across department boundaries
CVSS 3.1
8.1High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.1High | 3.1 | CVEProject cvelistV5 (CNA) (GitHub_M) | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:N |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| LiveHelperChat | livehelperchat | < 4.84v | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-05-14
- Last updated
- 2026-05-14
- State
- Published
- Assigner (CNA)
- GitHub_M
Exploit prediction (EPSS)
0.27%
Probability of exploitation in 30 days
19.2%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- No
- Exploitation
- Proof of concept
- Technical impact
- Total
Weaknesses (CWE)
- CWE-863Incorrect Authorization