CVE-2025-11850: When secondary user stores are configured, the implicit-association resolver incorrectly initializes from a se

Routine

MEDIUM 4.3UPGRADE

CVE-2025-11850 is a medium-severity flaw (CVSS 4.3) affecting identity server. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

When secondary user stores are configured, the implicit-association resolver incorrectly initializes from a secondary user store and bypasses the primary user store during search and uniqueness checks. This allows a subject to be associated with an unintended local account if the same lookup claim (e.g., username or email) exists in both the primary and a secondary store. If duplicate claim values exist across user stores, this issue can lead to

Why this priority

No elevated risk signals yet

A fixed release or distro patch exists.

Risk facts

CVSS score	4.3 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	Required
EPSS exploit chance	0.3% (top 77%)
CISA exploited list	No
Weakness	CWE-639
Published	2026-08-06
Last modified	2026-09-29

Publisher (CNA): WSO2 LLC · Vendor: wso2

Last updated 2026-09-29 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-08-06 08:16 UTCPublished CVE record published
2026-09-29 14:10 UTCUpdated Record last modified

wso2 identity server UPGRADE

Affected: >= 7.0.0 and < 7.0.0.132 · >= 7.1.0 and < 7.1.0.40

Fixed in: 7.0.0.132, 7.1.0.40

Safe to downgrade to: a release before 7.0.0

1. Check installed version

apt-cache policy identity-server || rpm -q identity-server || identity-server --version

2. UPGRADE to 7.0.0.132 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade identity-server

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade identity-server

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

3. If no update is available yet, DOWNGRADE to a release before 7.0.0 (Debian / Ubuntu)

apt-cache madison identity-server sudo apt install identity-server=<VERSION_BEFORE_7.0.0> sudo apt-mark hold identity-server

3. If no update is available yet, DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list identity-server sudo dnf downgrade identity-server-<VERSION_BEFORE_7.0.0> sudo dnf versionlock add identity-server

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2025-11850?

identity server: upgrade to 7.0.0.132, 7.1.0.40. Exact commands for each OS are on this page.

Is CVE-2025-11850 being exploited?

CVE-2025-11850 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2025-11850 affect?

CVE-2025-11850 affects identity server. Severity is medium (CVSS 4.3). When secondary user stores are configured, the implicit-association resolver incorrectly initializes from a secondary user store and bypasses the primary user store during search and uniqueness checks. This allows a subject to be associated

How urgent is CVE-2025-11850?

Priority 21/100. No elevated risk signals yet.

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References

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