# RHSA-2020:4484: Security update for 2 packages

RHSA-2020:4484, released November 4, 2020, fixes 2 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2020-4484
- Platform: Linux
- Released: Nov 4, 2020
- Priority: High (Closes CVE-2018-20843, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://access.redhat.com/errata/RHSA-2020:4484

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [expat](https://patchblox.com/security/data/product/linux/expat.md) | RHEL 8 | 0:2.2.5-4.el8 |
| [expat-devel](https://patchblox.com/security/data/product/linux/expat-devel.md) | RHEL 8 | 0:2.2.5-4.el8 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2018-20843](https://patchblox.com/security/data/cve/CVE-2018-20843.md) | High | expat: In libexpat in Expat before 2.2.7, XML input including XML names thatcontain a large number of colons could make the... | 7.5 | 0.0711 |  |
| [CVE-2019-15903](https://patchblox.com/security/data/cve/CVE-2019-15903.md) | High | Python 3.6 and 2 others: Out-of-bounds Read | 7.5 | 0.0664 |  |

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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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo