Apache Thrift PHP bindings: Stack-based buffer overflow via integer overflow
Summary
The PHP bindings of Apache Thrift before 0.25.0 contain a stack-based buffer overflow caused by an integer overflow when a string length from the network is used to size a stack buffer. A remote, unauthenticated attacker can send a crafted request to a Thrift service, which can crash the service. Exposure depends on whether a PHP application uses Thrift and accepts Thrift traffic from untrusted networks.
Affected
- Apache Thrift PHP bindings (Composer package apache/thrift) before 0.25.0
- Distribution packages: affected versions vary, check your distribution tracker
Fixed in
- Apache Thrift 0.25.0 or later
- Fixed distribution package versions: Unknown.
Workaround
- No vendor-documented workaround. The vendor recommends upgrading.
- Restrict network access to any Thrift endpoint so that only trusted clients can reach it until patched.
Exploitation
- No public exploit or proof of concept known.
- Not listed in CISA KEV; no known in-the-wild exploitation.
- CISA SSVC: exploitation none, automatable yes, technical impact partial.
Our recommendation
- Check whether any system runs Thrift PHP (Composer apache/thrift or distribution package php-thrift) and which version.
- Upgrade to Apache Thrift 0.25.0 or later, or install the distribution's fixed package once available.
- Restrict network access to Thrift services until patched.
- Monitor the Apache thread and your distribution tracker for updates.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Apache lists thread (CVE-2026-66837) lists.apache.org
- Apache announcement (mirror) www.mail-archive.com
- OSV record BIT-thrift-2026-66837 osv.dev
- PSIRT record psirt.com
- Debian OSV record osv.dev
- Ubuntu security tracker ubuntu.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 05:51.
Original description (NVD)
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.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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