CVE-2026-58150
CRITICAL
10.0
CVSS 3.1
Description
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling.
This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3.
Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.
Metadata
Severity & Metrics
10.0
CRITICAL CVSS 3.1
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
Affected products (1)
| Vendor | Product | Platform | Versions |
|---|---|---|---|
| Apache Software Foundation | Apache Traffic Server | — | 8.0.0 ≤ 8.1.9, 9.0.0 ≤ 9.2.14, 10.0.0 ≤ 10.1.3 |
Weakness (CWE)
| CWE | Source | Description |
|---|---|---|
| CWE-444 | cna | CWE-444 Inconsistent Interpretation of HTTP Requests |
CVSS scores (2)
| Score | Severity | Version | Source | Vector |
|---|---|---|---|---|
| 10.0 | CRITICAL | 3.1 | cna | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N |
| 7.8 | HIGH | 4.0 | cna | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:H/SI:H/SA:N |