Vulnerability · Published Oct 2, 2026 · Assigned by apache
CVE-2026-66331Apache Thrift: Buffered transport reads are not accounted against MaxMessageSize
Medium 6.9
In plain English
A medium-severity resource allocation without limits 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)6.9Medium
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
Allocation of Resources Without Limits or Throttling vulnerability in Apache Thrift Delphi bindings buffered transport. 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-2026-66331 |
| Debian:13 | thrift | no fix listed | DEBIAN-CVE-2026-66331 |
| Debian:14 | thrift | no fix listed | DEBIAN-CVE-2026-66331 |
| Ubuntu:22.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-66331 |
| Ubuntu:24.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-66331 |
| Ubuntu:26.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-66331 |
| Ubuntu:26.10 | thrift | no fix listed | UBUNTU-CVE-2026-66331 |
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Apache Software Foundation | Apache Thrift | 0 – before 0.25.0 |
Weakness: CWE-770 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
References
- https://lists.apache.org/thread/33otcgbqd27wf6qq810q56znzbomnhg1 vendor-advisory
- https://lists.apache.org/thread/971572orz86jdwlg58wqv8o50oqqb143 vendor-advisory