Apache Thrift Java: Resource leak in TSaslNonblockingServer
Summary
The Java bindings of Apache Thrift fail to release a connection in TSaslNonblockingServer when a pre-authentication parse error occurs. A remote, unauthenticated attacker can send a malformed request to exhaust server resources, which leads to a denial of service. The CVSS 4.0 base score is 8.2 (High), but the impact is limited to availability; no data theft or code execution is documented.
Affected
- Apache Thrift (Java bindings, Maven org.apache.thrift:libthrift) before 0.25.0
- Azure Linux package thrift 0.24.0-1 (per Azure Linux advisory)
- Downstream products that bundle an older libthrift version
Fixed in
- Apache Thrift 0.25.0 or later
- openSUSE: thrift 0.25.0-1.1
- Debian and downstream vendors: fixed version unknown
Workaround
- Unknown. No official workaround was found; upgrading is the only documented remediation.
- Services that do not use the Java TSaslNonblockingServer are likely not exposed (inference, confirm in your own code).
Exploitation
- Known exploitation: none. CISA SSVC: exploitation none, automatable yes, technical impact partial.
- Public proof of concept: none found.
- Not listed in CISA KEV according to one aggregator.
Our recommendation
- Inventory libthrift versions in Java applications and SBOMs.
- Upgrade libthrift to 0.25.0 or later where you control the code.
- Where a third-party product bundles an older version, ask the vendor for a fixed build or override the dependency version.
- Patch CVE-2026-61373 (same Apache release batch, also fixed in 0.25.0) together with this issue.
- Monitor internet-facing Java Thrift services that use SASL non-blocking mode.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Apache mailing list thread 1 lists.apache.org
- Apache mailing list thread 2 lists.apache.org
- OSV: Apache Thrift entry osv.dev
- OpenCVE CVE-2026-94651 app.opencve.io
- SUSE CVE via Vulners vulners.com
- Azure Linux advisory via OSV osv.dev
- Apache announcement archive www.mail-archive.com
- Related CVE-2026-61373 via Vulners vulners.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, 17:26.
Original description (NVD)
improper handling of exceptional conditions, Missing release of resource after effective lifetime vulnerability in Apache Thrift java bindings. 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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