# CVE-2026-53404: Apache Tomcat: Bad ornext processing in RewriteValve

> Attackers can bypass rewrite rules in Apache Tomcat due to incorrect control flow in the RewriteValve, potentially circumventing security restrictions.

- **Severity:** High 7.3 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 29 Jun 2026
- **Updated:** 30 Jun 2026
- **Also known as:** BIT-tomcat-2026-53404, DEBIAN-CVE-2026-53404, GHSA-h792-v28v-ppgr, UBUNTU-CVE-2026-53404

## What is CVE-2026-53404?

CVE-2026-53404 is a high-severity vulnerability in Apache Tomcat, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

Always-Incorrect Control Flow Implementation vulnerability in Apache Tomcat's rewrite valve meant that if the first condition in an OR chain matched, subsequent non-OR conditions were skipped.

This issue affects Apache Tomcat: from 11.0.0-M1 through 11.0.22, from 10.1.0-M1 through 10.1.55, from 9.0.0.M1 through 9.0.118, from 8.5.0 through 8.5.100. Other versions that have reached end of support may also be affected.

Users are recommended to upgrade to version 11.0.23, 10.1.56 or 9.0.119, which fix the issue.

Weakness: CWE-670 (Always-Incorrect Control Flow Implementation)

## Which versions are affected by CVE-2026-53404?

1 open source package ship an affected version, including tomcat. It affects 1 product.


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `tomcat` | Bitnami | All versions | 9.0.101, 10.1.37, 11.0.5 |

Products: Apache Tomcat.

## How do I fix CVE-2026-53404?

Upgrade tomcat to a fixed version for your release line: 9.0.101, 10.1.37 or 11.0.5.

## Is CVE-2026-53404 being exploited?

There is no known exploitation of CVE-2026-53404 in the wild and no public exploit code.

## Other vulnerabilities in Apache Tomcat

- [CVE-2025-24813](https://insights.sbomify.com/CVE-2025-24813/): Apache Tomcat Path Equivalence (critical 10.0, exploited in the wild)
- [CVE-2016-8735](https://insights.sbomify.com/CVE-2016-8735/): Apache Tomcat Remote Code Execution (critical 9.8, exploited in the wild)
- [CVE-2017-12617](https://insights.sbomify.com/CVE-2017-12617/): Apache Tomcat Remote Code Execution (high 8.1, exploited in the wild)
- [CVE-2017-12615](https://insights.sbomify.com/CVE-2017-12615/): Apache Tomcat on Windows Remote Code Execution (high 8.1, exploited in the wild)
- [CVE-2026-34486](https://insights.sbomify.com/CVE-2026-34486/): Apache Tomcat Missing Encryption of Sensitive Data (high 7.5, exploited in the wild)

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-53404 and fix it if it is affected.

What it is: CVE-2026-53404 is a high-severity vulnerability in Apache Tomcat, published on 29 Jun 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-53404 in the wild and no public exploit code.

Affected packages and fixed versions:
- tomcat (Bitnami): affected all versions; fixed in 9.0.101, 10.1.37, 11.0.5

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-53404/ (Markdown: https://insights.sbomify.com/CVE-2026-53404/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-53404
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-53404
- OSV: https://osv.dev/vulnerability/CVE-2026-53404

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-53404/
Summaries are generated and may contain mistakes; the official description above is the record.