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.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
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.
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.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2026-22591 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-22591 exists.
Sources
Also known as DEBIAN-CVE-2026-22591, GHSA-7577-rf2r-j88m, UBUNTU-CVE-2026-22591.