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    CVE-2026-31908

    Header injection vulnerability in Apache APISIX. The attacker can take advantage of certain configuration in forward-auth plugin to inject malicious headers. This issue affects Apache APISIX: from 2.12.0 through 3.15.0. Users are recommended to upgrade to version 3.16.0, which fixes the issue.

    Published:Apr 14, 2026
    Last Modified:Apr 17, 2026
    EPS:Apr 14, 2026
    EPSS Score:0.00044
    CVSS Score:9.1

    Affected Products

    Vendor
    Apache
    Product
    Apisix

    Exploits

    https://github.com/MehranTurk/CVE-2026-31908

    Common Attack Pattern Enumeration and Classification (CAPEC)

    CAPEC-81 Web Server Logs Tampering
    CAPEC-93 Log Injection-Tampering-Forging

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    Common Vulnerability Scoring System

    Attack Vector
    Network
    Adjacent
    Local
    Physical
    Privileges Required
    None
    Low
    High
    User Interaction
    None
    Required
    Scope
    Unchanged
    Changed
    Confidentiality
    None
    Low
    High
    Integrity
    None
    Low
    High
    Availability
    None
    Low
    High