CVE-2026-11943: Akaunting 3.1.21 - Authenticated stored XSS in document timeline

Severity: medium (CVSS 4.8 v4.0)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.4% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-06-22 · updated 2026-06-22
Weakness: CWE-79

Description

Akaunting 3.1.21 contains an authenticated stored cross-site scripting vulnerability in the document timeline shown on invoice and bill detail pages. An authenticated user can store HTML/JavaScript in their own profile name.

Affected products

Akaunting: 3.1.21

References

https://fluidattacks.com/es/advisories/thunder
https://github.com/akaunting/akaunting
https://fluidattacks.com/es/advisories/thunder

Get alerted when CVE-2026-11943 or the next vulnerability affects your stack