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Vulnerability IntelligenceCVE-2026-58150

CVE-2026-58150

CRITICAL10.0

Apache Traffic Server: HTTP/2 requests with Transfer-Encoding are not rejected, allowing request smuggling

Published Jul 29, 2026

Modified 2 weeks ago

Details

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.

References

ADVISORY

https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d

ADVISORY

https://www.cve.org/CVERecord?id=CVE-2026-58150

CVSS Analysis

CVSS v4.0

7.8

Exploitability

Attack Vector

NetworkAV:N

Attack Complexity

LowAC:L

Attack Requirements

NoneAT:N

Privileges Required

NonePR:N

User Interaction

NoneUI:N

Vulnerable System

Vuln. Confidentiality

NoneVC:N

Vuln. Integrity

LowVI:L

Vuln. Availability

NoneVA:N

Subsequent System

Subseq. Confidentiality

HighSC:H

Subseq. Integrity

HighSI:H

Subseq. Availability

NoneSA:N

7.8/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

Weakness Type (CWE)

Other

CWE-444

Ecosystems

Timeline

PublishedJul 29, 2026

ModifiedJul 30, 2026

CVE-2026-58150 | Mondoo Vulnerability Intelligence