# CVE-2026-22591: Fast DDS DDSSQLFilter Recursive Parser Stack Exhaustion (Remote DoS)

> Remote attackers can crash Fast DDS participants by sending crafted deeply nested SQL filter expressions, requiring an upgrade to patched versions.

- **Severity:** High 7.5 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 9 Sep 2026
- **Updated:** 14 Sep 2026
- **Also known as:** DEBIAN-CVE-2026-22591, GHSA-7577-rf2r-j88m, UBUNTU-CVE-2026-22591

## What is CVE-2026-22591?

CVE-2026-22591 is a high-severity denial of service vulnerability in eProsima Fast-DDS, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

eprosima Fast DDS is a C++ implementation of the DDS (Data Distribution Service) standard of the OMG (Object Management Group). Prior to versions 2.6.12, 2.14.6, 3.2.4, and 3.4.3, Fast DDS’s implementation of SQL‑based content filtering (DDSSQLFilter) allows any participant in a DDS domain to remotely crash other Fast DDS participants by sending a single crafted SEDP `DATA` submessage whose `PID_CONTENT_FILTER_PROPERTY.filterExpression` contains a deeply nested filter expression. Versions 2.6.12, 2.14.6, 3.2.4, and 3.4.3 fix the issue.

Weakness: CWE-674 (Uncontrolled Recursion), CWE-400 (Uncontrolled Resource Consumption)

## Which versions are affected by CVE-2026-22591?


## How do I fix CVE-2026-22591?

No fix has been published for CVE-2026-22591 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-22591 being exploited?

It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22591 exists.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-22591 and fix it if it is affected.

What it is: CVE-2026-22591 is a high-severity denial of service vulnerability in eProsima Fast-DDS, published on 9 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22591 exists.

Affected product: eProsima Fast-DDS. No package-level version data is available, so check the vendor advisory linked from the reference page.

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-2026-22591/ (Markdown: https://insights.sbomify.com/CVE-2026-22591/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-22591
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-22591
- OSV: https://osv.dev/vulnerability/CVE-2026-22591

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From sbomify Insights: https://insights.sbomify.com/CVE-2026-22591/
Summaries are generated and may contain mistakes; the official description above is the record.