# CVE-2019-13038: libapache2-mod-auth-mellon: mod_auth_mellon through 0.14.2 has an Open Redirect via the login?ReturnTo=substring, as demonstrated by omitting the...

CVE-2019-13038 is fixed in 3 products on 1 platform, first by libapache2-mod-auth-mellon 0.13.1-1ubuntu0.2, released June 29, 2019. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2019-13038
- Priority: Routine
- CVSS: 6.1 (Medium)
- EPSS: 0.0142
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 29, 2019

## 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 targetURL.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | libapache2-mod-auth-mellon Ubuntu 18.04.6 LTS (bionic) | 0.13.1-1ubuntu0.2 | [libapache2-mod-auth-mellon 0.13.1-1ubuntu0.2](https://patchblox.com/security/data/fix/linux/ubuntu-bionic-libapache2-mod-auth-mellon-0.13.1-1ubuntu0.2.md) | Jun 29, 2019 |
| Linux | libapache2-mod-auth-mellon Ubuntu 20.04 LTS (focal) | 0.14.2-1ubuntu2 | [libapache2-mod-auth-mellon 0.14.2-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-focal-libapache2-mod-auth-mellon-0.14.2-1ubuntu2.md) | Jun 29, 2019 |
| Linux | libapache2-mod-auth-mellon Ubuntu 24.10 (oracular) | 0.14.2-1ubuntu2 | [libapache2-mod-auth-mellon 0.14.2-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-oracular-libapache2-mod-auth-mellon-0.14.2-1ubuntu2.md) | Jan 16, 2026 |
| Linux | libapache2-mod-auth-mellon Ubuntu 25.04 (plucky) | 0.14.2-1ubuntu2 | [libapache2-mod-auth-mellon 0.14.2-1ubuntu2](https://patchblox.com/security/data/fix/linux/ubuntu-plucky-libapache2-mod-auth-mellon-0.14.2-1ubuntu2.md) | Jan 16, 2026 |
| Linux | mod_auth_mellon RHEL 8 | 0:0.14.0-11.el8 | [RHSA-2020:1660](https://patchblox.com/security/data/fix/linux/rhsa-2020-1660.md) | Apr 28, 2020 |
| Linux | mod_auth_mellon ol 8 | 0:0.14.0-11.el8 | [ELSA-2020-1660](https://patchblox.com/security/data/fix/linux/elsa-2020-1660.md) | May 5, 2020 |
| Linux | mod_auth_mellon-diagnostics RHEL 8 | 0:0.14.0-11.el8 | [RHSA-2020:1660](https://patchblox.com/security/data/fix/linux/rhsa-2020-1660.md) | Apr 28, 2020 |
| Linux | mod_auth_mellon-diagnostics ol 8 | 0:0.14.0-11.el8 | [ELSA-2020-1660](https://patchblox.com/security/data/fix/linux/elsa-2020-1660.md) | May 5, 2020 |

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Data as of 2026-11-08T00:53:09Z UTC. Source: Patchblox Patch Radar (https://patchblox.com/security/patch-radar). Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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