CVE-2026-111622

smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri

7.6 High

smart-sso through 2.1.1 contains an open redirect vulnerability in the /login handler that allows unauthenticated attackers to steal OAuth2 authorization codes by supplying an unvalidated redirectUri parameter. Attackers can send crafted /login links to users with active SSO sessions, then redeem stolen codes at /oauth2/access_token with any valid client credentials to obtain victims' access tokens.

Attack profile

How easy it is to exploit

Attack vector: Network
Complexity: High
Privileges needed: None
User interaction: Passive

What an attacker can affect

Confidentiality: High
Integrity: High
Availability: None

Exploit likelihood

0.43%Unchanged since Oct 17, 2026

What each source reports

CVE List Score used 7.6

smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri

Record: CVE-2026-111622
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness: CWE-601
Updated: 2026-11-02

EUVDEUVD-2026-103044 7.6

Record: EUVD-2026-103044
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-7rfc-8j8f-xgwj 7.6

smart-sso through 2.1.1 contains an open redirect vulnerability in the /login handler that allows...

Record: GHSA-7rfc-8j8f-xgwj
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/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
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness: CWE-601
Updated: 2026-11-02

NVD 7.6

Record: CVE-2026-111622
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/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
CVSS 3.1: 6.8 MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
Weakness: CWE-601
Updated: 2026-11-02

OSV 7.6

smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri

Record: CVE-2026-111622
CVSS 4.0: 7.6 HighCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
Weakness: CWE-601
Updated: 2026-11-02

Affected products

a466350665 smart-sso

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-111622 is a high vulnerability (CVSS 7.6) in A466350665 Smart-sso, published October 16, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.43%, the 37th percentile. No source names a fixed version.