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CVE-2026-14917

Kong API Gateway Enterprise: SAML Authentication bypass

High7.7EPSS 0.82%
Published
Updated
Reserved
Assigned by
Kong

Description

A SAML authentication bypass vulnerability affects the Kong SAML plugin when the validate_assertion_signature option is explicitly set to false. This option is enabled by default. When disabled, the plugin may extract the SAML identity from an unsigned assertion and authenticate the user without verifying a valid cryptographic signature. As a result, an unauthenticated remote attacker may be able to submit a crafted SAML response and impersonate arbitrary users, including administrators

Scores

CVSS scores of CVE-2026-14917, by who scored it
Scored byCVSSScoreVector
KongCNA (assigner)4.0High7.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N
NVDNVD · Awaiting Analysis4.0High7.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
EPSS (exploitation in 30 days)
0.82% · top 42% of all CVEs (6 Nov 2026)
CISA SSVC
Exploitation: none · Automatable: yes · Technical impact: partial
Loading the EPSS history…

The list uses the assigner's score when there is one, then CISA's, then NVD's: High 7.7.

Weakness

Affected products

  • Kong · Kong Enterprise Gateway

    • affected 3.15.0.0 – < 3.15.0.3
    • affected 3.14.0.0 – < 3.14.0.12
    • affected 3.13.0.0 – < 3.13.0.9
    • affected 3.12.0.0 – < 3.12.0.10
    • affected 3.10.0.0 – < 3.10.0.17
    • affected 3.4.0.0 – < 3.4.3.29

References (1)

Sources

The same CVE in the primary databases and aggregators, to check against.

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Record last updated .