CVE-2026-55970 Apache Thrift: C++ heap out-of-bounds read in THeaderTransport::readHeaderFormat()
An attacker can trigger a heap out-of-bounds read in Apache Thrift C++ bindings, potentially causing crashes or leaking memory.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-55970?
CVE-2026-55970 is a medium-severity memory corruption vulnerability in Apache Thrift, published on 27 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Buffer Over-read vulnerability in Apache Thrift C++ bindings.
This issue affects Apache Thrift: before 0.24.0.
Users are recommended to upgrade to version 0.24.0, which fixes the issue.
Weakness: CWE-126
Which versions are affected by CVE-2026-55970?
1 open source package ship an affected version, including thrift. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
thrift Bitnami | All versions | 0.24.0 |
Products include Apache Thrift.
How do I fix CVE-2026-55970?
Upgrade thrift to 0.24.0 or later.
Upgrade to the fixed version. Memory-safe languages, compiler hardening and fuzzing prevent most new cases. More about Memory corruption.
Is CVE-2026-55970 being exploited?
There is no known exploitation of CVE-2026-55970 in the wild and no public exploit code.
Other vulnerabilities in Apache Thrift
- CVE-2026-55971 Apache Thrift: C++ ZLIB heap buffer overflow (write) in THeaderTransport::untransform()
- CVE-2026-48144 Apache Thrift: c_glib TLS Client Missing Hostname Verification
- CVE-2016-5397 Apache Thrift Go Library Command Injection
- CVE-2026-43871 Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: TCompactProtocol varint byte-count limit
- CVE-2026-48586 Denial of service in Apache Thrift
Sources
Also known as AZL-93986, BIT-thrift-2026-55970, DEBIAN-CVE-2026-55970, ECHO-a141-40c7-03d7, GHSA-g7xp-pggm-c7w2, MINI-p2gg-73m3-r956 and 1 more.