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osvGoogleOSV:GHSA-CVG2-7C3J-G36J
HistoryDec 18, 2023 - 7:31 p.m.

Keycloak vulnerable to reflected XSS via wildcard in OIDC redirect_uri

2023-12-1819:31:02
Google
osv.dev
17
keycloak
xss
oidc
redirect_uri
vulnerable
attacker
specially crafted request

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

45.2%

Keycloak prevents certain schemes in redirects, but permits them if a wildcard is appended to the token. This could permit an attacker to submit a specially crafted request leading to XSS or possibly further attacks.

5.4 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

LOW

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

LOW

Integrity Impact

LOW

Availability Impact

NONE

CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

6.4 Medium

AI Score

Confidence

High

0.001 Low

EPSS

Percentile

45.2%