Apache Traffic Server: DoS vulnerability in HTTP/2 via stalled flow-control conditions
Summary
| CVE | CVE-2026-59173 |
|---|---|
| State | PUBLISHED |
| Assigner | apache |
| Source Priority | CVE Program / NVD first with legacy fallback |
| Published | 2026-07-18 13:17:06 UTC |
| Updated | 2026-07-18 14:17:12 UTC |
| Description | Uncontrolled Resource Consumption vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server: from 9.0.0 through 9.1.13, from 10.0.0 through 10.1.2. Users are recommended to upgrade to version 9.1.14 or 10.1.3, which fixes the issue. |
Risk And Classification
Problem Types: CWE-400 | CWE-400 CWE-400 Uncontrolled Resource Consumption
Vendor Declared Affected Products
| Source | Vendor | Product | Version | Platforms |
|---|---|---|---|---|
| CNA | Apache Software Foundation | Apache Traffic Server | affected 9.0.0 9.2.13 semver | Not specified |
| CNA | Apache Software Foundation | Apache Traffic Server | affected 10.0.0 10.1.2 semver | Not specified |
References
| Reference | Source | Link | Tags |
|---|---|---|---|
| lists.apache.org/thread/lhlbhphmv5dsfgx1fx84mgonzbocpzhd | [email protected] | lists.apache.org | |
| www.openwall.com/lists/oss-security/2026/07/17/5 | af854a3a-2127-422b-91ae-364da2661108 | www.openwall.com | |
| CVE Program record | CVE.ORG | www.cve.org | canonical |
| NVD vulnerability detail | NVD | nvd.nist.gov | canonical, analysis |
Vendor Comments And Credit
Discovery Credit
CNA: Okta Red Team (en)
There are currently no legacy QID mappings associated with this CVE.