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Response snapshot Oct 28, 2026, 17:11 UTC

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VulnerabilityCVE-2026-41573

OpenAM has LDAP Injection via `_queryId` Parameter

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.

At a glance

Exploited
Not known
Severity
8.7 High (CVSS 4.0)
Chance of exploitation
Not estimated
Sources
1 source

What to do

GitHub lists first patched versions: org.openidentityplatform.openam:openam-core-rest: 16.1.1. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-2vg8-q4c2-5cw3 (opens a new tab)

What happened

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

Continue reading

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

Background: CVE-2021-29156

CVE-2021-29156 was a pre-authentication LDAP injection in OpenAM's Webfinger endpoint, where user-supplied input reached DJLDAPv3Repo.getFilter() unescaped. The fix introduced the escapeQueryId flag in CrestQuery (defaulting to true) and added Filter.escapeAssertionValue() in the filter-building path:

Credit

Discovered by JD-Security SHENYI Team

Affected package ranges reported by GitHub: org.openidentityplatform.openam:openam-core-rest: <= 16.0.6

Scores and how they were measured

CVSS base severity

8.7

Version 4.0As of

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

Measurement source (opens a new tab)

How bad it is if exploited. Not a prediction of exploitation or proof you are exposed.

EPSS probability

Not available

A model's estimate of exploitation in the next 30 days, not certainty or your own risk.

Related technology

Sources

  1. Primary source

    GitHub-reviewed advisory GHSA-2vg8-q4c2-5cw3 (opens a new tab)

    The public advisory supplies the description, affected package/version ranges, and any listed CVSS metric. GitHub review is not local review.

    Published Checked

  2. Primary source

    GitHub public advisory API page (opens a new tab)

    The API page supplied GHSA-2vg8-q4c2-5cw3, its actual identifiers, source dates, and structured metrics.

    Published Date not suppliedChecked

Cite this record

For factual claims, cite the primary sources above; cite KEVWire for its compilation, dates, and classifications.

APA

KEVWire. (2026, October 28). OpenAM has LDAP Injection via `_queryId` Parameter (CVE-2026-41573). https://kevwire.com/record/CVE-2026-41573

MLA

"OpenAM has LDAP Injection via `_queryId` Parameter (CVE-2026-41573)." KEVWire, 28 Oct. 2026, kevwire.com/record/CVE-2026-41573.

Chicago

KEVWire. "OpenAM has LDAP Injection via `_queryId` Parameter (CVE-2026-41573)." Last modified October 28, 2026. https://kevwire.com/record/CVE-2026-41573.

Evidence summary (plain text)

OpenAM has LDAP Injection via `_queryId` Parameter (Jun 22, 2026).
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.
CVSS 8.7 (version 4.0; evidence as of Oct 28, 2026; https://github.com/advisories/GHSA-2vg8-q4c2-5cw3).
Sources:
GitHub-reviewed advisory GHSA-2vg8-q4c2-5cw3: https://github.com/advisories/GHSA-2vg8-q4c2-5cw3
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-41573.
Record origin: Ingested record.
AI evidence: Not assessed.
Known exploitation: Not assessed.
Zero-day status: Not assessed. KEV membership alone does not establish zero-day status.
About this data

This record was ingested from a data source. Retrieved: Oct 28, 2026, 16:55 UTC. Ingestion is not an independent editorial investigation.

A CISA KEV listing documents known exploitation, not necessarily a zero-day; absence from the catalog does not prove a vulnerability has never been exploited.

Technology tags indicate possible relevance, not verified exposure. Confirm the affected product, version, and configuration against your own inventory; KEVWire does not scan your systems.

A personal reading checklist on this device, not verified remediation.

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