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Vulnerability details: VCID-hh3r-cmmf-ufdt
Vulnerability ID VCID-hh3r-cmmf-ufdt
Aliases CVE-2026-41479
GHSA-w8p2-r796-3vmq
Summary Authlib OAuth 2.0 has Open Redirect in Authorization API that allows attacker-controlled redirect_uri through unsupported response_type
Status Published
Exploitability 0.5
Weighted Severity 6.2
Risk 3.1
Affected and Fixed Packages Package Details
Weaknesses (1)
CWE-601 URL Redirection to Untrusted Site ('Open Redirect')
System Score Found at
epss 0.00026 https://api.first.org/data/v1/epss?cve=CVE-2026-41479
epss 0.00026 https://api.first.org/data/v1/epss?cve=CVE-2026-41479
cvssv3.1_qr MODERATE https://github.com/advisories/GHSA-w8p2-r796-3vmq
cvssv3.1 5.4 https://github.com/authlib/authlib
generic_textual MODERATE https://github.com/authlib/authlib
cvssv3.1 5.4 https://github.com/authlib/authlib/commit/3be08468201a7766a93012ce149ea12822cab096
generic_textual MODERATE https://github.com/authlib/authlib/commit/3be08468201a7766a93012ce149ea12822cab096
cvssv3.1 5.4 https://github.com/authlib/authlib/security/advisories/GHSA-w8p2-r796-3vmq
cvssv3.1_qr MODERATE https://github.com/authlib/authlib/security/advisories/GHSA-w8p2-r796-3vmq
generic_textual MODERATE https://github.com/authlib/authlib/security/advisories/GHSA-w8p2-r796-3vmq
Reference id Reference type URL
https://api.first.org/data/v1/epss?cve=CVE-2026-41479
https://github.com/authlib/authlib
https://github.com/authlib/authlib/commit/3be08468201a7766a93012ce149ea12822cab096
GHSA-w8p2-r796-3vmq https://github.com/advisories/GHSA-w8p2-r796-3vmq
GHSA-w8p2-r796-3vmq https://github.com/authlib/authlib/security/advisories/GHSA-w8p2-r796-3vmq
No exploits are available.
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/authlib/authlib
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/authlib/authlib/commit/3be08468201a7766a93012ce149ea12822cab096
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:N Found at https://github.com/authlib/authlib/security/advisories/GHSA-w8p2-r796-3vmq
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Exploit Prediction Scoring System (EPSS)
Percentile 0.08006
EPSS Score 0.00026
Published At June 12, 2026, 12:55 p.m.
Date Actor Action Source VulnerableCode Version
2026-06-11T20:39:00.633075+00:00 GHSA Importer Import https://github.com/advisories/GHSA-w8p2-r796-3vmq 38.6.0