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TI-2026-18910 Aliases CVE-2026-23477

Rocket.Chat Unauthorized Access to OAuth App Details

Priority HIGH 67CWE-269Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Privilege escalation, Security bypass
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-269 and CWE-862.

Summary

Rocket.Chat is an open-source, secure, fully customizable communications platform. In Rocket.Chat versions up to 6.12.0, the API endpoint GET /api/v1/oauth-apps.get is exposed to any authenticated user, regardless of their role or permissions. This endpoint returns an OAuth application, as long as the user knows its ID, including potentially sensitive fields such as client_id and client_secret. This vulnerability is fixed in 6.12.0.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00356 29th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed Rocket.Chat (RocketChat): 6.12.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
RocketChatRocket.Chatbefore 6.12.06.12.0Patch availableCNA
  • Rocket.Chat VendorRocketChat Affected before 6.12.0 Fixed in 6.12.0 Patch available CNA

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:*before 6.12.0VulnerableRocket.Chat
  • cpe:2.3:a:rocket.chat:rocket.chat:*:*:*:*:*:*:*:* Versions before 6.12.0 Vulnerable ·Rocket.Chat

Remediation

  • Fix · CNA Rocket.Chat (RocketChat) Fixed in 6.12.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-23477

References

Exploit 1

  • TI-2026-33430 Rocket.Chat: Pre-Auth NoSQL Injection in CAS Login Handler leading to Arbitrary CAS/SAML User Session Hijack CVSS 3.1CRITICAL 9.1
  • TI-2026-33431 Rocket.Chat: Pre-Auth NoSQL Injection in OAuth2 Token Endpoint leading to Arbitrary User ATO CVSS 3.1CRITICAL 9.1
  • TI-2026-35234 Rocket.Chat: Missing URL protocol sanitization in ImageElement allows javascript: URLs in markdown images CVSS 3.1MEDIUM 4.4
  • TI-2026-22776 Rocket.Chat: Users can login with any password via the EE ddp-streamer-service CVSS 4.0CRITICAL 9.3
  • TI-2026-40188 Rocket.Chat: Email Parameter Fallback Leads To Account Takeover Within Apple OAuth CVSS 4.0CRITICAL 9.3
  • TI-2026-34135 Rocket.Chat: SAML signature validation skipped when IdP certificate field is empty CVSS 4.0CRITICAL 9.3
See all 20 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences