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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
19
keycloak
xss
oidc
redirect_uri
vulnerable
attacker
specially crafted request

CVSS3

5.4

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

AI Score

6.4

Confidence

High

EPSS

0.001

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.

CVSS3

5.4

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

AI Score

6.4

Confidence

High

EPSS

0.001

Percentile

45.2%