What’s Vulnerable › Vulnerabilities

CVE-2021-44759: Improper authentication vulnerability in TLS origin verification

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.6% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-03-23 · updated 2026-06-17
• Weakness: CWE-287

Description

Improper Authentication vulnerability in TLS origin validation of Apache Traffic Server allows an attacker to create a man in the middle attack. This issue affects Apache Traffic Server 8.0.0 to 8.1.0.

Affected products

• Apache Software Foundation Apache Traffic Server: from 8.0.0 through 8.1.0
• Debian Linux: 10.0, 11.0

References

• https://lists.apache.org/thread/zblwzcfs9ryhwjr89wz4osw55pxm6dx6
• https://www.debian.org/security/2022/dsa-5153
• https://lists.apache.org/thread/zblwzcfs9ryhwjr89wz4osw55pxm6dx6
• https://www.debian.org/security/2022/dsa-5153

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