CVE-2026-34828

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

HIGH
7.1
CVSS Score
Published: April 2, 2026 at 05:32 PM UTC
Updated: July 24, 2026 at 09:20 PM UTC
2 products affected across 2 vendorsListmonkListmonk

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Severity
HIGH7.1
Exploit prediction
EPSS 0.3%
SSVC
PoC

Description

listmonk 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.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

4.1.0 ≤ v < 6.1.0
Affected range stops below 6.1.0, so it looks safe — our inference, not a vendor statement
v < 6.1.0
Affected range stops below 6.1.0, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

References (3)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/knadh/listmonk/security/advisories/GHSA-h5j9-cvrw-v5qh
x_refsource_MISCProductRelease Notes
Source: cverecord
https://github.com/knadh/listmonk/releases/tag/v6.1.0

SSVC — Action Prioritization

SSVCPoCNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.1HIGHGitHub_M
Attack Vector
NETWORK
Complexity
LOW
Privileges
LOW
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
HIGH
Integrity
LOW
Availability
NONE
Vector?

Quick Info

StatusANALYZED
CWE
CWE-613

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