OpenAM has LDAP Injection via _queryId Parameter

Exploitation

No confirmed exploitation recorded. Patch Next marks exploitation only from CISA KEV.

CVSS 4.0

8.7 · CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N · score source

EPSS

• CVE-2026-41573: 0.50% estimated exploitation activity in the next 30 days; percentile 42.63 (FIRST EPSS, 2026-11-03). This is a model estimate, not proof of exploitation or customer exposure.

As published by the source; long descriptions are shortened.

OpenAM (Open Identity Platform) is an open-source IAM platform providing SSO, OAuth2, SAML, and OpenID Connect capabilities. The CREST REST API layer exposes user query endpoints under `/json/{realm}/users`. In `IdentityResourceV1.queryCollection()`, the HTTP query parameter `_queryId` is passed to a `CrestQuery` object with `escapeQueryId` explicitly set to `false`, bypassing the escape protection introduced as part of the CVE-2021-29156 fix. The unescaped value flows directly to `DJLDAPv3Repo.getFilter()` where it is concatenated into an LDAP filter string without sanitization, enabling authenticated attackers to inject arbitrary LDAP metacharacters for user enumeration and blind LDAP injection.

Affected Endpoint | Endpoint | Auth Required | Injection Parameter | |----------|--------------|---------------------| | `GET /openam/json/{realm}/users?_queryId= ` | SSO Token | `_queryId` | | `GET /openam/json/{realm}/groups?_queryId= ` | SSO Token (TBD) | `_queryId` | ##…

Published by the source

22 Jun 2026, 19:59 UTC

Last modified by the source

28 Oct 2026, 15:45 UTC

Source last checked

29 Oct 2026, 06:45 UTC

1. Revision 3 · amended · 29 Oct 2026

   Amended from osv record GHSA-2vg8-q4c2-5cw3

2. Revision 2 · amended · 28 Oct 2026

   Amended from ghsa record GHSA-2vg8-q4c2-5cw3

3. Revision 1 · created · 26 Oct 2026

   Published from ghsa record GHSA-2vg8-q4c2-5cw3

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# Patch Next advisory brief: CVE-2026-41573

Advisory: OpenAM has LDAP Injection via `_queryId` Parameter
IDs: CVE-2026-41573, GHSA-2vg8-q4c2-5cw3
Record: https://patchnext.com/advisories/cve-2026-41573 (revision 3, source checked 29 Oct 2026, 06:45 UTC)
Inventory: none attached. This brief comes from a public page and does not say whether any deployment is affected.
Severity: High (CVSS 8.7)
Exploitation: no confirmed exploitation recorded. Patch Next confirms exploitation only from CISA KEV.
Vendor response: Vendor fix available; fixed versions by package: org.openidentityplatform.openam:openam-core-rest 16.1.1. A vendor fix does not mean a deployment is fixed.

## Affected components
- Maven org.openidentityplatform.openam:openam-core-rest: affected < 16.1.1; fixed in 16.1.1

## Suggested inspection (read-only)
- Maven org.openidentityplatform.openam:openam-core-rest: check the installed version with your package manager.

## Supported action
Upgrade each affected component to a fixed version on its release line. For a transitive dependency, upgrade the parent package or add an override or constraint, then regenerate the lockfile. Redeploy every environment that ran an affected version.

## Required regression checks
- Run the test suite and a production build.
- Exercise the features that depend on org.openidentityplatform.openam:openam-core-rest.
- Repeat the inspection and confirm that only fixed versions remain installed.

## Rollback considerations
- Keep the previous lockfile and deployment artifact. Rolling back reinstates the vulnerable version, so apply any documented mitigation while you fix forward.

## Unresolved questions
- Which deployments run an affected version?
- Exploitation status can change. Check again before lowering the priority.
- Mark the work resolved only after the fixed version is verified in production.

## Sources
- Verified: https://github.com/advisories/GHSA-2vg8-q4c2-5cw3 (GitHub-reviewed advisory GHSA-2vg8-q4c2-5cw3 lists affected ranges: Maven org.openidentityplatform.openam:openam-core-rest >=0 <=16.0.6)
- Verified: https://osv.dev/vulnerability/GHSA-2vg8-q4c2-5cw3 (OSV record GHSA-2vg8-q4c2-5cw3 lists affected ranges: Maven org.openidentityplatform.openam:openam-core-rest >=0 <16.1.1 (fixed))

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