CVE-2026-58158
MediumCVSS 5.9Exploitation Probability (EPSS)
Low risk43th percentile - higher than 43% of all known CVEs
Summary
Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack. This affects versions from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, and from 10.0.0 through 10.1.3.
Risk Assessment
This could lead to server crashes or potential arbitrary code execution by an attacker.
Recommendation
Upgrade Apache Traffic Server to version 9.2.15 or 10.1.4, which fix the issue.
Other vulnerabilities in Apache Traffic Server
See all- CVE-2017-5659High
Apache Traffic Server before 6.2.1 generates a coredump when there is a mismatch between content length and chunked encoding.
- CVE-2016-5396High
Apache Traffic Server versions 6.0.0 to 6.2.0 are affected by an HPACK Bomb Attack.
- CVE-2014-3525High
Unspecified vulnerability in Apache Traffic Server versions 3.x through 3.2.5, 4.x before 4.2.1.1, and 5.x before 5.0.1. This vulnerability may be related to health checks, but its impact and attack vectors are unknown.
- CVE-2026-58162Critical
The certifier plugin in Apache Traffic Server generates certificates based on attacker-controlled client SNI. Affects versions 8.0.0-8.1.9, 9.0.0-9.2.14, 10.0.0-10.1.3.
- CVE-2026-58155Critical
Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass. Affects versions 8.0.0-8.1.9, 9.0.0-9.2.14, 10.0.0-10.1.3.
- CVE-2026-58150Critical
Apache Traffic Server does not reject Transfer-Encoding in HTTP/2 requests, allowing downgrade request smuggling. Affects versions 8.0.0-8.1.9, 9.0.0-9.2.14, 10.0.0-10.1.3.
- CVE-2026-57834Critical
Apache Traffic Server is vulnerable to request smuggling when chunked messages are malformed. This affects versions from 8.0.0 to 8.1.9, from 9.0.0 to 9.2.14, and from 10.0.0 to 10.1.3.
- CVE-2026-41920Critical
Apache Traffic Server has an Improper Access Control vulnerability. This affects versions from 9.0.0 to 9.1.14 and from 10.0.0 to 10.1.3.
- CVE-2026-33267Critical
Apache Traffic Server has an Improper Input Validation vulnerability. This affects versions from 9.2.0 to 9.2.14 and from 10.1.0 to 10.1.3.
- CVE-2023-33934Critical
Improper Input Validation vulnerability in Apache Traffic Server. This issue affects Apache Traffic Server through version 9.2.1.
Original NVD description (English source)
Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack. 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.