CVE-2026-43868: Apache Thrift: Rust implementation vulnerable to CVE-2020-13949 pattern

Severity: medium (CVSS 5.3 v3.1)
Exploited in the wild: not listed in CISA KEV
EPSS: 0.7% probability of exploitation in the next 30 days
Public exploit or detection template: none known
Published: 2026-05-05 · updated 2026-10-26
Weakness: CWE-789

Description

Memory Allocation with Excessive Size Value vulnerability in Apache Thrift. This issue affects Apache Thrift: before 0.23.0. Users are recommended to upgrade to version 0.23.0, which fixes the issue.

Affected products

Apache Software Foundation Apache Thrift: before 0.23.0 — fixed in 0.23.0

How to fix

Upgrade to a fixed version: Apache Software Foundation Apache Thrift 0.23.0. Check the vendor advisory for mitigations.

References

https://lists.apache.org/thread/zj76dtwnbbs1m7z3focf4wd51pqpsmn9
https://access.redhat.com/errata/RHSA-2026:26586
https://access.redhat.com/errata/RHSA-2026:42644
https://access.redhat.com/security/cve/CVE-2026-43868
https://bugzilla.redhat.com/show_bug.cgi?id=2466670
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-43868.json

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