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01 Record

CVE-2025-13909

Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure

MediumPUBLISHEDCNA: WSO2
CNA base score4.3 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N

02 Description

Information Disclosure via Multi-Tenant Authentication Flows in WSO2 Identity Server Allows Cross-Tenant PII Exposure

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.34% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 28.1% of scored records. A rank, not a probability.
NVD base score
4.3 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
NVD analysis status
Analyzed. NVD last modified this record on 2026-09-29.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-08-06 07:33Z2 MO AGO
Last updated
2026-08-06 12:33Z2 MO AGO
Reserved
2025-12-02
Assigning CNA
WSO2
Record state
PUBLISHED
Severity
Medium (CVSS 4.3)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N
Weaknesses
  • CWE-20Improper Input ValidationClass
  • CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
Data version
5.2
Document digest
fd7e7bbea1e6f3d41bba5b1fd114d76ff1abbc083b72f9105cbbfd1348ca3e48

05 Affected products

VendorProductVersionsPlatforms
WSO2WSO2 Identity Server7.0.0 to < 7.0.0.134, 7.1.0 to < 7.1.0.42—
WSO2WSO2 Carbon Identity Application Authentication Framework7.0.78 to < 7.0.78.162, 7.8.23 to < 7.8.23.66—
WSO2WSO2 Carbon MagicLink Authenticator Module1.1.22 to < 1.1.22.6, 1.1.31 to < 1.1.31.3—
WSO2WSO2 Carbon Abstract OTP Authenticator1.0.5 to < 1.0.5.4, 1.0.10 to < 1.0.10.1—
WSO2Email OTP Authenticator1.0.30 to < 1.0.30.4—

06 References

07 Remediation

Follow the instructions given on https://security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4731/#solution