Vulnerability · Published Oct 2, 2026 · Assigned by apache
CVE-2026-94638Apache Thrift: PHP `thrift_protocol` C extension ignores the configured `maxStringSize`
Medium 6.3
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)6.3Medium
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 PHP bindings. 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-2026-94638 |
| Debian:13 | thrift | no fix listed | DEBIAN-CVE-2026-94638 |
| Debian:14 | thrift | no fix listed | DEBIAN-CVE-2026-94638 |
| Ubuntu:22.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-94638 |
| Ubuntu:24.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-94638 |
| Ubuntu:26.04:LTS | thrift | no fix listed | UBUNTU-CVE-2026-94638 |
| Ubuntu:26.10 | thrift | no fix listed | UBUNTU-CVE-2026-94638 |
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:P/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/v60w786pqr7njzz9425grby8yjrgmbsj vendor-advisory