CVE-2026-66837

Apache Thrift: PHP accelerator sizes a stack buffer from a wire-controlled string length

Apache Software Foundation Apache Thrift

CVSS

8.7High

ExploitationNo known exploitationNot in CISA KEV, which does not prove it is unexploitedCISA KEV

Exploit odds (EPSS)0.29%Chance of exploitation activity in the next 30 days, higher than 20% of CVEs. Scored 23 Oct 2026FIRST EPSS

Fixed in0.25.0Fixed versionCVE List

Published2 Oct 2026Updated 2 Oct 2026CVE List

What fixes it

A fixed version on one release line is not the upgrade target for every line. Check your exact version and any vendor backports.

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.

Text from CVE List