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TI-2026-40334 Aliases CVE-2026-55881

OpenReplay: Cross-tenant session replay disclosure via missing session ownership check in first-mob endpoint

Priority LOW 32CWE-639Published · Updated

Key facts

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

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-639.

Summary

OpenReplay is a self-hosted session replay suite. From 1.22.0 before 1.27.0, getFirstMob returned 15-second presigned S3 download URLs for a session's DOM-replay recording based solely on the session path parameter, while validateProjectAccess checked only that the project belonged to the requester's tenant and did not verify that the session belonged to that project, allowing any authenticated low-privilege user to read another tenant's first 15 seconds of session-replay recording data. This issue is fixed in version 1.27.0.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00427 37th percentileScored 2026-11-07
Fix Fixed openreplay (openreplay): 1.27.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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
openreplayopenreplay1.22.0 to before 1.27.01.27.0Patch availableCNA
  • openreplay Vendoropenreplay Affected 1.22.0 to before 1.27.0 Fixed in 1.27.0 Patch available CNA

Remediation

  • Fix · CNA openreplay (openreplay) Fixed in 1.27.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-55881

References

Other 4

  • TI-2026-40332 OpenReplay: Unauthenticated stored XSS leads to dashboard account takeover CVSS 3.1CRITICAL 9.3
  • TI-2026-22713 OpenReplay: SQL injection in cards/search via unvalidated sort field parameter CVSS 4.0MEDIUM 6.9
  • TI-2026-33096 OpenReplay: Cross-tenant information disclosure in app_apikey projectKey routes via missing tenant binding CVSS 3.1HIGH 7.7
  • TI-2026-40333 OpenReplay: Cross-user IDOR in notes and dashboard widgets CVSS 3.1HIGH 7.1
  • TI-2023-26090 OpenReplay HTML Injection vulnerability CVSS 3.1MEDIUM 6.5
  • TI-2026-33097 Cross-tenant IDOR on feature-flag and assist-stats routes via {project_id} case mismatch CVSS 4.0MEDIUM 5.3
See all 7 →

Sources

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