CVE-2026-57834
Apache Traffic Server: Malformed chunked message body allows request smuggling
CVSS Score
10.0
EPSS Score
0.0%
EPSS Percentile
0th
Apache Traffic Server allows request smuggling if chunked messages are malformed. 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.
| CWE | CWE-444 |
| Vendor | apache software foundation |
| Product | apache traffic server |
| Published | Jul 29, 2026 |
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CVSS v3 Breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:L Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
Low
Affected 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
References
Credits
🔍 Haruki Oyama 🔍 Katsutoshi Ikenoya (LY Corporation) 🔍 Apache Community