Session fixation in Rocket.Chat
Priority MEDIUM 50CWE-384Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Spoofing
- Confidentiality · integrity · availability
- High · High · High
- Fix status
- No fix listed
Attack profile from CVSS 3.1 · CISA ADP. Fix status from CNA. Impact type from CWE-384.
Summary
A security vulnerability has been discovered in the implementation of 2FA on the rocket.chat platform, where other active sessions are not invalidated upon activating 2FA. This could potentially allow an attacker to maintain access to a compromised account even after 2FA is enabled.
Why it matters now
Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00724 54th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet
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 |
|---|---|---|---|---|---|
| — | Rocket.Chat | Fixed in 6.0> and back-ported accordingly to our supported versions. Check https://docs.rocket.chat/resources/get-support/enterprise-support#rocket.chat-versions for more info | — | No fix listed | CNA |
- Rocket.Chat Vendor— Affected Fixed in 6.0> and back-ported accordingly to our supported versions. Check https://docs.rocket.chat/resources/get-support/enterprise-support#rocket.chat-versions for more info Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:rocket.chat:rocket.chat:-:*:*:*:*:*:*:* | not specified by NVD | Vulnerable | Rocket.Chat |
- cpe:2.3:a:rocket.chat:rocket.chat:-:*:*:*:*:*:*:* Versions not specified by NVD Vulnerable ·Rocket.Chat
Remediation
No fixed version listed by the sources yet.
Timeline
- 2026-10-02 Threatist record created from CVE-2023-28316
- 2026-10-03 Alias added: GHSA-fm4w-5hqf-ch9w
References
Advisory 1
More Rocket.chat vulnerabilities
- TI-2021-05772 A improper input sanitization vulnerability exists in Rocket.Chat server 3.11, 3.12 &… CVSS 3.1CRITICAL 9.8
- TI-2022-13921 SQL injection in Rocket.Chat CVSS 3.1HIGH 8.8
- TI-2026-18910 Rocket.Chat Unauthorized Access to OAuth App Details CVSS 3.1HIGH 7.7
- TI-2022-12398 Improper authentication in Rocket.Chat Mobile app CVSS 3.1MEDIUM 6.8
- TI-2022-13929 Information disclosure in Rocket.Chat CVSS 3.1MEDIUM 6.5
- TI-2022-15931 Cross-site scripting in Rocket.chat CVSS 3.1MEDIUM 5.4
Sources
- CVE-2023-28316 · CVE Program
- CVE-2023-28316 · NVD
- FIRST EPSS
- GHSA-fm4w-5hqf-ch9w · GitHub Advisory Database · CC BY 4.0
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