Vulnerability · Published Oct 2, 2026 · Assigned by apache
CVE-2026-93926Apache Thrift: C++ `THeaderTransport::untransform()` leaks the zlib stream on the error path
High 8.7
In plain English
A high-severity memory leak in Apache Thrift from Apache Software Foundation. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 0.3% (higher than 20% of all known vulnerabilities).
Severity (CVSS 4.0)8.7High
Exploit odds (30 days)0.3%top 79.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known
Official description
Missing release of memory after effective lifetime, Missing release of resource after effective lifetime vulnerability in Apache Thrift THeaderTransport. This issue affects Apache Thrift: before 0.25.0. Users are recommended to upgrade to version 0.25.0, which fixes the issue.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian:12 | thrift | no fix listed | DEBIAN-CVE-2026-93926 |
| Debian:13 | thrift | no fix listed | DEBIAN-CVE-2026-93926 |
| Debian:14 | thrift | no fix listed | DEBIAN-CVE-2026-93926 |
| Ubuntu:22.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-93926 |
| Ubuntu:24.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-93926 |
| Ubuntu:26.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-93926 |
| Ubuntu:26.10 | thrift | no fix listed | UBUNTU-CVE-2026-93926 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Thrift | 0 – before 0.25.0 |
Weakness: CWE-401, CWE-772 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N
References
- https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1 vendor-advisory
- https://lists.apache.org/thread/9353rb8mpoq4ltff88h1j2y3hfy6blgb vendor-advisory