listmonk: Active sessions remain valid after password reset and password change

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Summary

CVECVE-2026-34828
StatePUBLISHED
AssignerGitHub_M
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-04-02 18:16:33 UTC
Updated2026-04-15 17:45:10 UTC
Descriptionlistmonk is a standalone, self-hosted, newsletter and mailing list manager. From version 4.1.0 to before version 6.1.0, a session management vulnerability allows previously issued authenticated sessions to remain valid after sensitive account security changes, specifically password reset and password change. As a result, an attacker who has already obtained a valid session cookie can retain access to the account even after the victim changes or resets their password. This weakens account recovery and session security guarantees. This issue has been patched in version 6.1.0.

Risk And Classification

Primary CVSS: v3.1 7.1 HIGH from [email protected]

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

EPSS: 0.000110000 probability, percentile 0.013050000 (date 2026-04-15)

Problem Types: CWE-613 | CWE-613 CWE-613: Insufficient Session Expiration

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N
3.1CNADECLARED7.1HIGHCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
Low
Availability
None

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:L/A:N

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Nadh Listmonk All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Knadh Listmonk affected >= 4.1.0, < 6.1.0 Not specified

References

ReferenceSourceLinkTags
github.com/knadh/listmonk/security/advisories/GHSA-h5j9-cvrw-v5qh [email protected] github.com Exploit, Vendor Advisory
github.com/knadh/listmonk/releases/tag/v6.1.0 [email protected] github.com Product, Release Notes
github.com/knadh/listmonk/commit/db82035d619348949512dafdaf60c86037cafc9e [email protected] github.com Patch
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