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CVE-2022-25763

Improper input validation on HTTP/2 headers

HIGH
7.5
CVSS Score
Published: August 10, 2022 at 05:50 AM UTC
Updated: June 17, 2026 at 04:34 AM UTC
3 products affected across 3 vendorsDebian LinuxFedoraTraffic Server

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Severity
HIGH7.5
Exploit prediction
EPSS 2%
SSVC
No known exploit

Description

Improper Input Validation vulnerability in HTTP/2 request validation of Apache Traffic Server allows an attacker to create smuggle or cache poison attacks. This issue affects Apache Traffic Server 8.0.0 to 9.1.2.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Traffic Server· Apache
95%
8.0.0 ≤ v ≤ 9.1.28.0.0 ≤ v < 8.1.59.0.0 ≤ v < 9.1.3
Affected range stops below 8.1.5, so it looks safe — our inference, not a vendor statement
Affected range stops below 9.1.3, so it looks safe — our inference, not a vendor statement
Debian Linux· Debiandrupal
95%
11.0
Fedora· Fedora Projectrpm
95%
3536

References (4)

x_refsource_MISCMailing ListVendor Advisory
Source: [email protected]
https://lists.apache.org/thread/rc64lwbdgrkv674koc3zl1sljr9vwg21
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/CJ67IWD5PRJUOIYIDJRUG3UMS2UF4X4J/
Vendor Advisoryx_refsource_FEDORAMailing ListThird Party Advisory
Source: [email protected]
https://lists.fedoraproject.org/archives/list/package-announce%40lists.fedoraproject.org/message/ZCSBQBYPOZSWS5LCOAQ6LJLRLXFIAW5A/
Vendor Advisoryx_refsource_DEBIANThird Party Advisory
Source: [email protected]
https://www.debian.org/security/2022/dsa-5206

SSVC — Action Prioritization

SSVCNo known exploitNot automatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
HIGH
Availability
NONE
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-444

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