CVE-2026-111622CWE-601

CVE-2026-111622

Medium · published October 16, 2026

CVSS v3.1
6.8
EPSS
0%
Percentile
36.1
In the wild
Unconfirmed
What it is

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.

The record
Technical detail
CVSS v3.1
6.8 · MEDIUM
Vector
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:N
CVSS v4.0
7.6 · CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:P/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N
EPSS
0.00429 · 36.1th percentile
Weakness
CWE-601 · URL Redirection to Untrusted Site ('Open Redirect')
Published
2026-10-16T22:17Z
References (7)
https://github.com/a466350665/smart-sso · [email protected]https://github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/LoginController.java#L50-L59 · [email protected]https://github.com/a466350665/smart-sso/blob/1.6.0/smart-sso-server/src/main/java/openjoe/smart/sso/server/controller/Oauth2Controller.java#L55-L84 · [email protected]https://github.com/a466350665/smart-sso/blob/2.1.1/smart-sso-server/src/main/java/com/smart/sso/server/controller/LoginController.java#L53-L63 · [email protected]https://hackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirect · [email protected]https://www.vulncheck.com/advisories/smart-sso-through-2.1.1-oauth2-authorization-code-theft-via-unvalidated-redirecturi · [email protected]https://hackmd.io/@hieuPenguinnn/smart-sso-oauth2-code-leak-open-redirect · 134c704f-9b21-4f2e-91b3-4a467353bcc0
EPSS history
Timeline
  • 18 OCT 03:27Z
    EPSS moved — → 0%
    epss
  • 16 OCT 17:38Z
    smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri
    cvelistv5
  • 16 OCT 17:38Z
    smart-sso through 2.1.1 OAuth2 Authorization Code Theft via Unvalidated redirectUri
    cvelistv5