CVE-2026-66858
High
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.
SeverityHigh
CVSS8.7
Exploit probability—
ProductApache Thrift
PublishedOct 2, 2026
First seenOct 2, 2026
Weakness typeCWE-674CWE-674
How to fix
Update
- Apache Software Foundation Apache Thrift0.25.0 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Software Foundation Apache Thrift | v < 0.25.0 | 0.25.0 |
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