# CVE-2026-97149: swift: In OpenStack Swift before 2.38.2, the tempurl middleware does not reject the X-Copy-From header on PUT requests

CVE-2026-97149 is fixed in swift on 1 platform, first by DEBIAN-CVE-2026-97149, released September 26, 2026. It is not reported as exploited. Patch Radar priority: Routine.

- Web page: https://patchblox.com/security/cve/CVE-2026-97149
- Priority: Routine
- CVSS: n/a
- EPSS: 0.0025
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Sep 24, 2026

## Description

In OpenStack Swift before 2.38.2, the tempurl middleware does not reject the X-Copy-From header on PUT requests. A TempURL signature only covers the method, expiry, and path, and thus the list of disallowed headers is the only defense against a signed PUT request changing what the request does. An attacker holding a PUT TempURL for a single object can add an X-Copy-From header naming any object in the same account; the copy middleware copies that object to the destination, and the attacker then reads the victim's data back with a GET TempURL for the destination object. Copies across account boundaries are rejected. Only deployments using the shipped default proxy pipeline (tempurl and copy middleware) with account-level TempURL keys are affected.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | swift Debian 12.15 (bookworm) | 2.30.1-0+deb12u3 | [DEBIAN-CVE-2026-97149](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97149.md) | Sep 26, 2026 |
| Linux | swift Debian 13.5 (trixie) | 2.35.1-0+deb13u4 | [DEBIAN-CVE-2026-97149](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97149.md) | Sep 26, 2026 |
| Linux | swift Debian 14 | 2.38.1-3 | [DEBIAN-CVE-2026-97149](https://patchblox.com/security/data/fix/linux/debian-cve-2026-97149.md) | Sep 26, 2026 |

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Data as of 2026-11-08T00:53:09Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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