5.9
Medium
CVE-2026-58158 Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack
Description
Apache Traffic Server mishandles PROXY protocol input, truncating ports and overflowing the stack. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.11, 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.
Affected products and versions
| Product | Affected versions | Fixed in |
|---|---|---|
| Apache Traffic Server 10.0 | 10.0.0 → 10.1.3 | No fix stated |
| Apache Traffic Server 9.0 | 9.0.0 → 9.2.14 | No fix stated |
| Apache Traffic Server 8.0 | 8.0.0 → 8.1.11 | No fix stated |
Other CVEs of Apache Traffic Server
The 111 CVEs of Apache Traffic Server →
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5.9
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CVE-2026-111817
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5.3
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CVE-2026-111812
Apache Traffic Server's origin_server_auth plugin lets a client force signing of attacker-chosen AWS request headers…
10.0
Critical
CVE-2026-111811
Apache Traffic Server's experimental tsmemcache plugin allows unauthenticated network read, write, and deletion of the…
9.0
Critical