# RHSA-2026:90501: Security update for 3 packages

RHSA-2026:90501, released October 29, 2026, fixes 1 CVE across 3 products. One of them is being exploited (CVE-2026-111497); 1 on CISA KEV. Patch Radar priority: Patch now.

- Web page: https://patchblox.com/security/fix/linux/rhsa-2026-90501
- Platform: Linux
- Released: Oct 29, 2026
- Priority: Patch now (Closes CVE-2026-111497, exploited (CISA KEV))
- CVEs: 1, exploited: 1, on CISA KEV: 1
- Vendor advisory: https://access.redhat.com/errata/RHSA-2026:90501

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [brotli](https://patchblox.com/security/data/product/linux/brotli.md) | RHEL 8 | 0:1.0.6-5.el8_10 |
| [brotli-devel](https://patchblox.com/security/data/product/linux/brotli-devel.md) | RHEL 8 | 0:1.0.6-5.el8_10 |
| [python3-brotli](https://patchblox.com/security/data/product/linux/python3-brotli.md) | RHEL 8 | 0:1.0.6-5.el8_10 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-111497](https://patchblox.com/security/data/cve/CVE-2026-111497.md) | Patch now | Google: CVE-2026-111497 Buffer overflow vulnerability in the Brotli decoder | 9.8 | 0.8264 | CISA KEV, Disclosed |

---

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo