VulnerabilityPublished 6 Aug 2026

CVE-2025-11850: WSO2 Identity Server · Insecure Direct Object Reference

Affects WSO2 Identity ServerSource CVE Database V5

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Not known to be exploited · CVSS 4.3 Medium : upgrade to 7.1.0.40 or 7.0.0.132 when convenient.

Data as of 5 Nov 2026, 00:01 UTC

CVSS 3.1 base score

4.3Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
Patch: Available – fixed in 7.1.0.40, 7.0.0.132

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:L

Attack Vector: Network
Attack Complexity: Low
Privileges Required: None
User Interaction: Required
Scope: Unchanged
Confidentiality: None
Integrity: None
Availability: Low

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Network: The vulnerable component is bound to the network stack and the set of possible attackers extends beyond the other options listed, up to and including the entire Internet. Such a vulnerability is often termed 'remotely exploitable' and can be thought of as an attack being exploitable at the protocol level one or more network hops away (e.g., across one or more routers).
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: Required: Successful exploitation of this vulnerability requires a user to take some action before the vulnerability can be exploited.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: None: There is no loss of confidentiality within the impacted component.
Integrity: None: There is no loss of integrity within the impacted component.
Availability: Low: Performance is reduced or there are interruptions in resource availability. Even if repeated exploitation of the vulnerability is possible, the attacker does not have the ability to completely deny service to legitimate users. The resources in the impacted component are either partially available all of the time, or fully available only some of the time, but overall there is no direct, serious consequence to the impacted component.

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 6 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponized: A Metasploit exploit module or Exploit-DB entry exists (Metasploit scanner modules do not count), or CISA SSVC or the CVSS exploit maturity reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

ghsa-25wv-6jh5-5g7f

What to do

Upgrade WSO2 Identity Server to 7.1.0.40 or 7.0.0.132.

Affected software

Product	Affected	Fixed in
WSO2WSO2 Identity Server	Affected >=7.1.0 <7.1.0.40	Fixed in 7.1.0.40
WSO2WSO2 Identity Server	Affected >=7.0.0 <7.0.0.132	Fixed in 7.0.0.132
Mavenorg.wso2.identityserver/wso2-is`pkg:maven/org.wso2.identityserver/wso2-is`Other threats	Affected =7.0.0 =7.1.0	Fixed in–

Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.

AI-suggested

In the meantime, deployments can mitigate risk by disabling implicit association, ensuring claim values are globally unique across user stores, or avoiding configuration of secondary user stores. Monitor vendor communications for official fixes or updates.

Description

CVE-2025-11850 is a medium severity vulnerability in WSO2 Identity Server versions 7.0.0 and 7.1.0. It occurs when secondary user stores are configured, causing the implicit-association resolver to incorrectly initialize from a secondary user store and bypass the primary user store during search and uniqueness checks. This can lead to identity confusion and incorrect implicit associations when using an external Identity Provider (IDP), potentially restricting legitimate user access if the secondary account has fewer privileges. Deployments without secondary user stores, with implicit association disabled, or with globally unique claim values are not affected.

Impact

The vulnerability can cause identity confusion due to incorrect implicit associations between external IDP accounts and local accounts in WSO2 Identity Server. Legitimate users may be denied proper access if their external IDP account associates with a secondary user store account that has fewer privileges. There is no direct confidentiality or integrity impact reported, but availability impact is low. The issue only affects deployments with secondary user stores configured and duplicate claim values across stores.

CWE-639Authorization Bypass Through User-Controlled Key (opens in a new tab)
Base weaknessLikelihood of exploit: HighCWE Top 25 (2025): #24OWASP Top 10 A01:2025: Broken Access Control (opens in a new tab)
The system's authorization functionality does not prevent one user from gaining access to another user's data or record by modifying the key value identifying the data.
Architecture and Design
For each and every data access, ensure that the user has sufficient privilege to access the record that is being requested.
Architecture and Design · Implementation
Make sure that the key that is used in the lookup of a specific user's record is not controllable externally by the user or that any tampering can be detected.
Architecture and Design
Use encryption in order to make it more difficult to guess other legitimate values of the key or associate a digital signature with the key so that the server can verify that there has been no tampering.
OWASP Cheat Sheets
Access Control (opens in a new tab)
Authorization Testing Automation (opens in a new tab)
Cross-Site Request Forgery Prevention (opens in a new tab)
Insecure Direct Object Reference Prevention (opens in a new tab)
Authorization (opens in a new tab)
OWASP ASVS 4.0.3
V4.1.2 (opens in a new tab)
V4.2.1 (opens in a new tab)
V8.3.8 (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

security.docs.wso2.com/en/latest/security-announcements/security-advisories/2026/WSO2-2025-4493/ (opens in a new tab)

Community reviews

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Exploitation evidence

What to do

Affected software

Description

AI analysisMachine-generated, updated 13 Aug 2026, 17:33 UTC

WeaknessesCWE-639

Technical details

References

Community reviews

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