# ELSA-2026-55772: haproxy security update

ELSA-2026-55772, released August 17, 2026, fixes 2 CVEs in haproxy (version 0:2.8.14-3.el9_8.2). None of them is reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/fix/linux/elsa-2026-55772
- Platform: Linux
- Released: Aug 17, 2026
- Priority: High (Closes CVE-2026-55204, high severity)
- CVEs: 2, exploited: 0, on CISA KEV: 0
- Vendor advisory: https://linux.oracle.com/errata/ELSA-2026-55772.html

## Applies to

| Product | Release | Fixed in |
|---|---|---|
| [haproxy](https://patchblox.com/security/data/product/linux/haproxy.md) | ol 9 | 0:2.8.14-3.el9_8.2 |

## CVEs this fix closes

| CVE | Priority | Title | CVSS | EPSS | Exploitation |
|---|---|---|---:|---:|---|
| [CVE-2026-55204](https://patchblox.com/security/data/cve/CVE-2026-55204.md) | High | HAProxy - NULL Pointer Dereference in hpack_dht_insert Function | 7.5 | 0.0048 |  |
| [CVE-2026-55203](https://patchblox.com/security/data/cve/CVE-2026-55203.md) | High | HAProxy - Integer Overflow in FCGI Demux Record Length Field | 9.1 | 0.0033 |  |

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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo