Bug 2545169 (CVE-2026-66858) - CVE-2026-66858 thrift: Apache Thrift: Denial of Service via deeply nested unknown fields
Summary: CVE-2026-66858 thrift: Apache Thrift: Denial of Service via deeply nested unk...
Keywords:
Status: NEW
Alias: CVE-2026-66858
Product: Security Response
Classification: Other
Component: vulnerability
Version: unspecified
Hardware: All
OS: Linux
high
high
Target Milestone: ---
Assignee: Product Security DevOps Team
QA Contact:
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Depends On:
Blocks:
TreeView+ depends on / blocked
 
Reported: 2026-10-02 12:57 UTC by OSIDB Bzimport
Modified: 2026-10-09 02:50 UTC (History)
11 users (show)

Fixed In Version:
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Description OSIDB Bzimport 2026-10-02 12:57:47 UTC 
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.
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