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.

Attack Vector Network

Attack Complexity Low

Privileges Required None

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

No CVSS v3.1

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0
Apache Software Foundation Apache Thrift unaffected
Version Status Constraints
0 affected < 0.25.0

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Advisories

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Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

References
Link Providers
https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1 cve-icon cve-icon
https://lists.apache.org/thread/6kl6g40tpl8zt3opd8fwn6bsgyddzhd5 cve-icon cve-icon
History

Fri, 02 Oct 2026 12:45:00 +0000

Type Values Removed Values Added
Description 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.
Title Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift, Apache Thrift: skip() does not apply the recursion limit (Python accelerator, PHP, Perl, Lua, Smalltalk, OCaml)
Weaknesses CWE-674
References
Metrics cvssV4_0

{'score': 8.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: apache

Published:

Updated: 2026-10-02T16:54:25.933Z

Reserved: 2026-07-27T22:27:11.611Z

Link: CVE-2026-66858

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Deferred

Published: 2026-10-02T13:17:53.453

Modified: 2026-10-02T17:17:07.357

Link: CVE-2026-66858

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-02T14:30:24Z

Weaknesses