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CVE-2026-91135— Apache Thrift: C++ `THeaderTransport::transform()` heap buffer overflow (write direction)

Quick assessment

Affected
Apache Software Foundation Apache Thrift
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Apache Thrift C++ 中的 THeaderTransport 存在基于堆的缓冲区溢出漏洞。 当应用程序为其发送的数据帧启用 ZLIB 转换功能时， 函数会将压缩后的数据帧复制到写入缓冲区，但未验证缓冲区空间是否足够容纳压缩后的数据。对于难以压缩的数据（例如由远程对等方提供的数据），压缩后的体积可能大于原始数据，导致复制操作超出堆缓冲区的末尾。超出的写入量随数据帧大小的增加而增大；对于较大的数据帧，该操作还会超出转换缓冲区的边界进行读取。 此问题影响 Apache Thrift 在 0.25.0 版本之

CVSS 9.2 · Critical

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-91135

Vulnerability Information
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Vulnerability Title
Apache Thrift: C++ `THeaderTransport::transform()` heap buffer overflow (write direction)
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
堆缓冲区溢出
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
Apache Software Foundation Apache Thrift 0 ~ 0.25.0 -

II. Public POCs for CVE-2026-91135

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III. Intelligence Information for CVE-2026-91135

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Mailing List Discussions for CVE-2026-91135 (2)

Same Patch Batch · Apache Software Foundation · 2026-10-02 · 69 CVEs total

CVE-2026-102795 9.3 CRITICAL Apache Traffic Server: SNI to Host header matching policy is not properly enforced
CVE-2026-83632 9.2 CRITICAL Apache Thrift: C++ THttpTransport grows its line buffer without bound
CVE-2026-96294 8.7 HIGH Apache Thrift: nodejs web server: no `error` listener on an upgraded WebSocket connection
CVE-2026-83663 8.7 HIGH Apache Thrift: TFramedTransport and THeaderTransport re-enter Read once per frame that car
CVE-2026-66858 8.7 HIGH Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift:
CVE-2026-94658 8.7 HIGH Apache Thrift: Lua `TFramedTransport`/`THttpTransport` re-slice the buffer on every read (
CVE-2026-94646 8.7 HIGH Apache Thrift: Node.js `server.js` ends the process on any per-connection error (+ two tri
CVE-2026-87117 8.7 HIGH Apache Thrift: PHP `thrift_protocol` accelerator dereferences a missing container-element
CVE-2026-86535 8.7 HIGH Apache Thrift: A JSON member name can stall the Node server's event loop indefinitely
CVE-2026-82458 8.7 HIGH Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift,
CVE-2026-86537 8.7 HIGH Apache Thrift: A truncated HTTP request stops the D library's server, allowing an unauthen
CVE-2026-61373 8.7 HIGH Apache Thrift: Java TSaslNonblockingServer pre-auth unbounded SASL frame allocation
CVE-2026-94642 8.7 HIGH Apache Thrift: PHP `TSimpleServer` exits the whole process on any non-transport exception
CVE-2026-85493 8.7 HIGH Apache Thrift, Apache Thrift: TProtocolUtil.skip follows peer-chosen nesting to any depth
CVE-2026-85494 8.7 HIGH Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift,
CVE-2026-91137 8.7 HIGH Apache Thrift: PHP `thrift_protocol` accelerator: zero-byte container elements
CVE-2026-93925 8.7 HIGH Apache Thrift: C++ `THeaderTransport::writeVarint32()` stack buffer overflow on a negative
CVE-2026-93926 8.7 HIGH Apache Thrift: C++ `THeaderTransport::untransform()` leaks the zlib stream on the error pa
CVE-2026-94633 8.7 HIGH Apache Thrift: Dart `TBinaryProtocol.readMessageBegin` allocates from the pre-versioned na
CVE-2026-94635 8.7 HIGH Apache Thrift: Lua `TBinaryProtocol:readMessageBegin` bypasses `checkStringSize` on the pr

Showing top 20 of 69 CVEs. View all on vendor page → →

IV. Related Vulnerabilities

Same product: Apache Thrift
Same vendor: Apache Software Foundation
Same weakness: CWE-122

V. Comments for CVE-2026-91135

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