Authentication bypass in Vartalap chat-server
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Security bypass
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- Fixed
Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-287.
Summary
Chat Server is the chat server for Vartalap, an open-source messaging application. Versions 2.3.2 until 2.6.0 suffer from a bug in validating the access token, resulting in authentication bypass. The function `this.authProvider.verifyAccessKey` is an async function, as the code is not using `await` to wait for the verification result. Every time the function responds back with success, along with an unhandled exception if the token is invalid. A patch is available in version 2.6.0.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ramank775 | chat-server | 2.3.2 to before 2.6.0 | 2.6.0 | Patch available | CNA |
- chat-server Vendorramank775 Affected 2.3.2 to before 2.6.0 Fixed in 2.6.0 Patch available CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:chat_server_project:chat_server:*:*:*:*:*:*:*:* | 2.3.2 to before 2.6.0 | Vulnerable | Chat Server Project |
- cpe:2.3:a:chat_server_project:chat_server:*:*:*:*:*:*:*:* Versions 2.3.2 to before 2.6.0 Vulnerable ·Chat Server Project
Remediation
- Fix · CNA chat-server (ramank775) Fixed in 2.6.0
Timeline
- 2026-10-02 Threatist record created from CVE-2022-31013
References
Sources
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences