CVE-2026-86537 Denial of service in Apache Thrift
An unauthenticated remote attacker can cause a denial of service in the Apache Thrift D library server by sending a truncated HTTP request.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-86537?
CVE-2026-86537 is a high-severity denial of service vulnerability in Apache Thrift, published on 2 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Uncaught exception, Loop with unreachable exit condition ('infinite loop'), Integer underflow (wrap or wraparound) vulnerability in Apache Thrift D language bindings.
This issue affects Apache Thrift: before 0.25.0.
Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Which versions are affected by CVE-2026-86537?
1 open source package ship an affected version, including thrift.
| Package | Affected | Fixed in |
|---|---|---|
thrift Bitnami | All versions | 0.25.0 |
How do I fix CVE-2026-86537?
Upgrade thrift to 0.25.0 or later.
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-2026-86537 being exploited?
There is no known exploitation of CVE-2026-86537 in the wild and no public exploit code.
Sources
Also known as AZL-106560, BIT-thrift-2026-86537, DEBIAN-CVE-2026-86537, GHSA-5q9q-jwgx-rjpw, MINI-84h7-rj9c-8x7f, UBUNTU-CVE-2026-86537.