CVE-2026-66837 Apache Thrift: PHP accelerator sizes a stack buffer from a wire-controlled string length
Attackers can trigger a stack buffer overflow in Apache Thrift PHP bindings via crafted wire data, potentially leading to code execution or crashes.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-66837?
CVE-2026-66837 is a high-severity 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
Stack-based Buffer Overflow, Integer Overflow or Wraparound vulnerability in Apache Thrift php 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-2026-66837?
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-2026-66837?
Upgrade thrift to 0.25.0 or later.
Is CVE-2026-66837 being exploited?
There is no known exploitation of CVE-2026-66837 in the wild and no public exploit code.
Sources
Also known as AZL-106638, BIT-thrift-2026-66837, DEBIAN-CVE-2026-66837, ECHO-eec7-309e-8d44, GHSA-fvvf-6w23-6h87, MINI-h722-3mpj-9xxv and 1 more.