Vulnerability in Wso2 Identity Server
CVE-2025-12627
The user impersonation flow in WSO2 Identity Server fails to properly manage refresh tokens associated with impersonated sessions. This allows an attacker who has obtained an access token for an impersonated user to leverage the refresh token grant to obtain new access tokens, extending their ability to act as the legitimate user. An attacker who gains access to an impersonated user's access token can exploit this weakness to renew their authorization. This results in the continued ability to perform actions on behalf of the actual user, compromising log integrity and traceability by masking the true actor.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 2.4 (Low). Vector: CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:N/I:L/A:N.
EPSS exploit prediction
EPSS: 0.002 (10.5th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 10th percentile — 10.5% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.002 · newest: 0.002 · change: 0.000
Affected products
- Wso2 Identity Server
- Wso2 Carbon Oauth — versions 7.0.26, 7.0.259, x
- Wso2 Identity Server — versions 7.0.0, 7.1.0
Weakness classification (CWE)
References
- ed10eef1-636d-4fbe-9993-6890dfa878f8 (vendor-advisory, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-12627?
- CVE-2025-12627 is a low-severity vulnerability in Wso2 Identity Server, classified under Insufficient Session Expiration. CVSS score: 2.4/10. Published 2026-08-06.
- How severe is CVE-2025-12627?
- Low severity. CVSS v3 base score is 2.4 out of 10.