Apache Thrift: Denial of service in D non-blocking server
Summary
Apache Thrift before 0.25.0 has an issue in the D language binding's non-blocking server (thrift.server.nonblocking.TNonblockingServer). An exception escaping a libevent callback stops the server. An unauthenticated remote attacker can cause a denial of service if the D binding is used and reachable over the network.
Affected
- Apache Thrift before 0.25.0 (D library, thrift.server.nonblocking.TNonblockingServer)
- Default configuration: unaffected (according to the CVE record)
- Whether the D library is shipped in distribution packages is unverified.
Fixed in
- Apache Thrift 0.25.0 (fixes the issue according to Apache)
Workaround
Unknown. No interim workaround has been documented by Apache. Restricting network access to the Thrift service and confirming whether the D binding is used are general mitigations only.
Exploitation
- No known exploitation in the wild and no public proof of concept found at the time of research.
- CISA SSVC: exploitation none, not automatable, partial technical impact.
- EPSS 0.00426 (low predicted exploitation).
Our recommendation
- Ask clients whether any Thrift-based service is in use and which language binding it uses.
- Upgrade to Apache Thrift 0.25.0 or the vendor's patched package, prioritising internet-facing services.
- Restrict network access to Thrift services that cannot be upgraded immediately.
- Check the release notes of each product that bundles Thrift.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Apache Thrift mailing list thread 1 lists.apache.org
- Apache Thrift mailing list thread 2 lists.apache.org
- Apache Thrift download page thrift.apache.org
- OSV: BIT-thrift-2026-90440 osv.dev
- Tenable CVE-2026-90440 www.tenable.com
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 1 Nov 2026, 17:21.
Original description (NVD)
Uncaught exception, improper handling of exceptional conditions, improper resource shutdown vulnerability in Apache Thrift D thrift.server.nonblocking.TNonblockingServer. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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