CVE-2026-66858

Last refreshed2026-10-03

Status: UPDATED | Advisory ID: CVE-2026-66858

Key Details

CVE	CVE-2026-66858
CVSS Score / Version	8.7 (High) / CVSS v4.0
Updated	2026-10-02
Affected products	Apache Software Foundation Apache Thrift
Classified as	CWE-674 (Uncontrolled Recursion)

Affected Products, Subsystems & Sectors

Vendor	Product	Affected Versions	Patch Status
Apache Software Foundation	Apache Thrift

Vendor

Product

Affected Versions

Patch Status

Apache Software Foundation

Apache Thrift

Subsystems	General OT
Sectors	Multiple

What to Know

The protocol skip routine in several Apache Thrift bindings did not apply the binding's recursion limit, so a message that nests unknown fields deeply enough can exhaust the stack. Affected: the Python C++ accelerator (the pure-Python protocols are not affected), the PHP library and its thrift_protocol extension, and the Perl, Lua, Smalltalk and OCaml libraries.

This issue affects Apache Thrift: before 0.25.0.

Users are recommended to upgrade to version 0.25.0, which fixes the issue. (NVD)

What to Do

Monitor Apache Software Foundation's web page for any future patch releases.

References

Source	Reference
NVD	https://nvd.nist.gov/vuln/detail/CVE-2026-66858
CVE	https://www.cve.org/CVERecord?id=CVE-2026-66858

Source

Reference

NVD

https://nvd.nist.gov/vuln/detail/CVE-2026-66858

CVE