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Description

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.

PUBLISHED Reserved 2026-03-07 | Published 2026-03-08 | Updated 2026-03-08 | Assigner VulDB




MEDIUM: 5.3CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
MEDIUM: 6.3CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
MEDIUM: 6.3CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:O/RC:C
6.5AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:OF/RC:C

Problem types

Improper Authentication

Product status

0.2.0
affected

0.3.0
unaffected

Timeline

2026-03-07:Advisory disclosed
2026-03-07:VulDB entry created
2026-03-07:VulDB entry last update

Credits

djnn (VulDB User) reporter

References

vuldb.com/?id.349717 (VDB-349717 | suitenumerique messages ThreadAccess serializers.py ThreadAccessSerializer improper authentication) vdb-entry technical-description

vuldb.com/?ctiid.349717 (VDB-349717 | CTI Indicators (IOB, IOC, IOA)) signature permissions-required

vuldb.com/?submit.767329 (Submit #767329 | La Suite Numerique messages 0.2.0 IDOR) third-party-advisory

github.com/...ssages/security/advisories/GHSA-7476-6crq-4cw9 exploit

github.com/suitenumerique/messages/pull/557 issue-tracking patch

github.com/...ommit/d7729f4b885449f6dee3faf8b5f2a05769fb3d6e patch

github.com/suitenumerique/messages/releases/tag/v0.3.0 patch

github.com/suitenumerique/messages/ product

cve.org (CVE-2026-3739)

nvd.nist.gov (CVE-2026-3739)

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