# CVE-2023-34981: tomcat10: A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response...

CVE-2023-34981 is fixed in tomcat10 on 1 platform, first by DEBIAN-CVE-2023-34981, released June 21, 2023. It is not reported as exploited. Patch Radar priority: High.

- Web page: https://patchblox.com/security/cve/CVE-2023-34981
- Priority: High
- CVSS: 7.5 (high)
- EPSS: 0.0112
- CISA KEV: not listed
- Exploited (vendor report): no
- Publicly disclosed: no
- Published: Jun 21, 2023

## Description

A regression in the fix for bug 66512 in Apache Tomcat 11.0.0-M5, 10.1.8, 9.0.74 and 8.5.88 meant that, if a response did not include any HTTP headers no AJP SEND_HEADERS messare woudl be sent for the response which in turn meant that at least one AJP proxy (mod_proxy_ajp) would use the response headers from the previous request leading to an information leak.

## Where it's fixed

| Platform | Product | Fixed in | Fix | Released |
|---|---|---|---|---|
| Linux | tomcat10 Debian 13.5 (trixie) | 10.1.10-1 | [DEBIAN-CVE-2023-34981](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34981.md) | Jun 21, 2023 |
| Linux | tomcat10 Debian 14 | 10.1.10-1 | [DEBIAN-CVE-2023-34981](https://patchblox.com/security/data/fix/linux/debian-cve-2023-34981.md) | Jun 21, 2023 |

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Data as of 2026-11-09T07:25:28Z 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 Patchblox finds out-of-date software on Windows, macOS and Linux and updates it through release rings: https://patchblox.com/demo

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