CVE-2026-91135
Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. When an…
- Risk score
- 68/100
- CVSS
- 9.2 v4.0
- Exploit chance (30 days)
- 0.5%
- Published
- 2 Oct 2026
Open in the live forecast Today's forecast
What to know
- What it is
- Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. Data that does not compress, such as content a remote peer…
- Affected
- See advisory
- Fix
- Upgrade the product to 0.25.0 or later.
- Exploitation
- No known exploitation
Why it is Amber
- CVSS 9.2 critical
- Remotely exploitable without logging in
References
Original description
Heap-based buffer overflow vulnerability in Apache Thrift C++ THeaderTransport. When an application enables the ZLIB transform for the frames it sends, THeaderTransport::transform() copies the compressed frame into the write buffer without making sure it fits. Data that does not compress, such as content a remote peer supplied, grows under compression, so the copy writes past the end of the heap buffer by an amount that grows with the size of the frame, and for large frames it also reads past the end of the transform buffer. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Last activity 2 Oct 2026. Patch Forecast updates every hour.