# ELSA-2021-2584: ruby-default-gems security update

ELSA-2021-2584, released July 7, 2021, fixes 2 CVEs in ruby-default-gems (version 0:2.7.3-136.module+el8.4.0+20239+cbf59dc8). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2021-2584
- Platform: Linux
- Released: Jul 7, 2021
- Priority: High (Closes CVE-2021-28965, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2021-2584.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [ruby-default-gems](https://patchblox.com/security/data/product/linux/ruby-default-gems.md) | ol 8 | 0:2.7.3-136.module+el8.4.0+20239+cbf59dc8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2021-28965](https://patchblox.com/security/data/cve/CVE-2021-28965.md) | High | ruby: Ruby is an extensible, interpreted, object-oriented, scripting language | 7.5 | 0.0506 |  |
| [CVE-2020-25613](https://patchblox.com/security/data/cve/CVE-2020-25613.md) | High | ruby: Ruby is an extensible, interpreted, object-oriented, scripting language | 7.5 | 0.0382 |  |

---

Data as of 2026-11-07T12:40:37Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo