CVE-2024-38521: Persistent Cross-Site Scripting (XSS) in hushline inbox

Severity: medium (CVSS 6.1 v3.1)
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: yes
Published: 2024-06-28 · updated 2026-06-17
Weakness: CWE-79

Description

Hush Line is a free and open-source, anonymous-tip-line-as-a-service for organizations or individuals. There is a stored XSS in the Inbox. The input is displayed using the `safe` Jinja2 attribute, and thus not sanitized upon display. This issue has been patched in version 0.1.0.

Affected products

scidsg hushline: before 0.1.0 — fixed in 0.1.0

How to fix

Upgrade to a fixed version: scidsg hushline 0.1.0. Check the vendor advisory for mitigations.

References

https://github.com/scidsg/hushline/security/advisories/GHSA-4v8c-r6h2-fhh3
https://github.com/scidsg/hushline/security/advisories/GHSA-4v8c-r6h2-fhh3

Get alerted when CVE-2024-38521 or the next vulnerability affects your stack