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TI-2026-03229 Aliases CVE-2026-3739GHSA-632x-p8x5-j45w

suitenumerique messages ThreadAccess serializers.py ThreadAccessSerializer improper authentication

Priority MEDIUM 57CWE-287Published · 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
Low · Low · Low
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-287.

Summary

A security flaw has been discovered in suitenumerique messages 0.2.0. This issue affects the function ThreadAccessSerializer of the file src/backend/core/api/serializers.py of the component ThreadAccess. The manipulation results in improper authentication. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. Upgrading to version 0.3.0 is capable of addressing this issue. The patch is identified as d7729f4b885449f6dee3faf8b5f2a05769fb3d6e. The affected component should be upgraded.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00363 30th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by the CNA
Fix Fixed messages (suitenumerique): 0.3.0

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
suitenumeriquemessages0.2.00.3.0Patch availableCNA
  • messages Vendorsuitenumerique Affected 0.2.0 Fixed in 0.3.0 Patch available CNA

Remediation

  • Fix · CNA messages (suitenumerique) Fixed in 0.3.0

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-3739
  2. 2026-10-03 Alias added: GHSA-632x-p8x5-j45w

References

Exploit 1

Patch 3

Other 1

  • TI-2026-62539 Docs before 5.4.1 Stale Collaboration Session After Access Revocation CVSS 4.0HIGH 7.6
  • TI-2026-30507 People: Privilege Escalation via Missing Role Ceiling in Mail Domain Invitation CVSS 3.1MEDIUM 5.5
  • TI-2026-61870 Docs through 5.6.1 SSRF via Unauthenticated cors-proxy Endpoint CVSS 4.0MEDIUM 6.9
  • TI-2026-53731 LaSuite Doc: Public Documents Enumeration CVSS 3.1MEDIUM 6.5
  • TI-2026-74953 Authorization bypass in La Suite Docs lets users comment on other threads CVSS 4.0LOW 2.3

Sources

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