CVE-2026-21483
- Source
- https://cve.org/CVERecord?id=CVE-2026-21483
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21483.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-21483
- Aliases
- Published
- 2026-01-02T20:57:29.332Z
- Modified
- 2026-02-28T04:45:50.476117Z
- Severity
-
- 5.4 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:N/SC:H/SI:H/SA:N/E:P CVSS Calculator
- Summary
- listmonk Vulnerable to Stored XSS Leading to Admin Account Takeover
- Details
-
listmonk is a standalone, self-hosted, newsletter and mailing list manager. Prior to version 6.0.0, lower-privileged user with campaign management permissions can inject malicious JavaScript into campaigns or templates. When a higher-privileged user (Super Admin) views or previews this content, the XSS executes in their browser context, allowing the attacker to perform privileged actions such as creating backdoor admin accounts. The attack can be weaponized via the public archive feature, where victims simply need to visit a link - no preview click required. Version 6.0.0 fixes the issue.
- Database specific
{ "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21483.json", "cwe_ids": [ "CWE-79" ], "cna_assigner": "GitHub_M" }- References
Affected packages
Git / github.com/knadh/listmonk
Affected ranges
- Type
- GIT
- Repo
- https://github.com/knadh/listmonk
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixed
Affected versions
v0.*
v0.1.0-alpha
v0.1.1-alpha
v0.1.2-alpha
v0.2.0-alpha
v0.2.1-alpha
v0.2.2-alpha
v0.3.0-alpha
v0.3.1-alpha
v0.3.2-alpha
v0.3.3-alpha
v0.4.0-alpha
v0.5.0-alpha
v0.5.1-alpha
v0.5.2-alpha
v0.6.0-alpha
v0.6.1-alpha
v0.6.2-alpha
v0.7.0-alpha
v0.8.0-beta
v0.9.0-beta
v1.*
v1.0.0
v1.1.0
v2.*
v2.0.0
v2.1.0
v2.2.0
v2.3.0
v2.4.0
v2.5.0
v2.5.1
v3.*
v3.0.0
v4.*
v4.0.0
v4.0.1
v4.1.0
v5.*
v5.0.0
v5.0.1
v5.0.2
v5.0.3
v5.1.0