What’s Vulnerable › Vulnerabilities

CVE-2022-31778: Transfer-Encoding not treated as hop-by-hop

• Severity: high (CVSS 7.5 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 2.1% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-08-10 · updated 2026-06-17
• Weakness: CWE-20

Description

Improper Input Validation vulnerability in handling the Transfer-Encoding header of Apache Traffic Server allows an attacker to poison the cache. This issue affects Apache Traffic Server 8.0.0 to 9.0.2.

Affected products

• Apache Software Foundation Apache Traffic Server: from 8.0.0 through 8.1.4; from 9.0.0 through 9.1.2
• Debian Linux: 11.0

References

• https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
• https://lists.debian.org/debian-lts-announce/2023/04/msg00007.html
• https://www.debian.org/security/2022/dsa-5206
• https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
• https://lists.debian.org/debian-lts-announce/2023/04/msg00007.html
• https://www.debian.org/security/2022/dsa-5206

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