# CVE-2026-71190: swift: In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to...

CVE-2026-71190 is fixed in swift on 1 platform, first by DEBIAN-CVE-2026-71190, released August 5, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-71190
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0084
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Aug 5, 2026

## Description

In OpenStack Swift through 2.38.0, the proxy server Accept header parser contains a regular expression vulnerable to catastrophic backtracking (ReDoS). The "qdtext" pattern (?:[^"]|\\.)* allows an unauthenticated remote attacker to send a crafted Accept header that causes exponential CPU consumption in the proxy worker. A payload of 32 backslash-character pairs exceeds 30 seconds of CPU time. No authentication is required. Repeated requests can exhaust all proxy worker threads, resulting in a complete denial of service.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | swift Debian 12.15 (bookworm) | 2.30.1-0+deb12u2 | [DEBIAN-CVE-2026-71190](https://patchblox.com/security/data/fix/linux/debian-cve-2026-71190.md) | Aug 5, 2026 |
| Linux | swift Debian 14 | 2.37.1-6 | [DEBIAN-CVE-2026-71190](https://patchblox.com/security/data/fix/linux/debian-cve-2026-71190.md) | Aug 5, 2026 |

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Data as of 2026-11-08T13:06:02Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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