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Response snapshot Oct 28, 2026, 17:11 UTC

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VulnerabilityCVE-2026-46498

OpenAM Arbitrary OAuth Token Minting via Push Registration

Description An Authorization Bypass Through User-Controlled Key (CWE-639) exists in OpenAM's stateful OAuth2 token-read path. Under certain conditions, this may allow an attacker to forge OAuth2 bearer tokens and OIDC ID tokens with arbitrary subject, client, realm, and scope.

At a glance

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

What to do

GitHub lists first patched versions: org.openidentityplatform.openam:openam-oauth2: 16.1.1. Confirm the affected range and upgrade guidance in the exact advisory.

Read GitHub-reviewed advisory GHSA-cj8f-2fhf-826r (opens a new tab)

What happened

Summary

Description

An Authorization Bypass Through User-Controlled Key (CWE-639) exists in OpenAM's stateful OAuth2 token-read path. Under certain conditions, this may allow an attacker to forge OAuth2 bearer tokens and OIDC ID tokens with arbitrary subject, client, realm, and scope. This affects OpenAM Community Edition through version 16.0.6.

The OAuth2 token-read path reads caller-supplied token identifiers from the shared Core Token Store (CTS) without placing them in an OAuth-only namespace and without binding the row's trusted CTS type to the expected OAuth token family, so any CTS row whose BLOB claims to be an OAuth token is accepted on the read path with no integrity check.

Continue reading

Impact

OpenAM Community Edition deployments through version 16.0.6 with the OAuth2 Provider service enabled in a realm are potentially affected, but the vulnerable read path is only reachable once an attacker can place attacker-controlled JSON into the shared CTS under an identifier they know.

For example, an anonymous Push Notification SNS callback handler, reachable by any low-privileged user in a Push Notification-enabled realm after a single legitimate Push registration can trigger the exploit.

In any deployment where such a primitive exists, an attacker can forge OAuth2 bearer tokens with attacker-chosen userName, clientID, realm, and scope. The compromise does not by itself create an OpenAM SSO session or grant admin-console access.

Patch

This has been patched in OpenAM Community Edition version 16.1.1. Users are encouraged to update to the latest release.

Affected package ranges reported by GitHub: org.openidentityplatform.openam:openam-oauth2: < 16.1.1

Scores and how they were measured

CVSS base severity

7.1

Version 4.0As of

CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/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-cj8f-2fhf-826r (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-cj8f-2fhf-826r, 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 Arbitrary OAuth Token Minting via Push Registration (CVE-2026-46498). https://kevwire.com/record/CVE-2026-46498

MLA

"OpenAM Arbitrary OAuth Token Minting via Push Registration (CVE-2026-46498)." KEVWire, 28 Oct. 2026, kevwire.com/record/CVE-2026-46498.

Chicago

KEVWire. "OpenAM Arbitrary OAuth Token Minting via Push Registration (CVE-2026-46498)." Last modified October 28, 2026. https://kevwire.com/record/CVE-2026-46498.

Evidence summary (plain text)

OpenAM Arbitrary OAuth Token Minting via Push Registration (Jun 25, 2026).
Description

An Authorization Bypass Through User-Controlled Key (CWE-639) exists in OpenAM's stateful OAuth2 token-read path. Under certain conditions, this may allow an attacker to forge OAuth2 bearer tokens and OIDC ID tokens with arbitrary subject, client, realm, and scope. This affects OpenAM Community Edition through version 16.0.6.
CVSS 7.1 (version 4.0; evidence as of Oct 28, 2026; https://github.com/advisories/GHSA-cj8f-2fhf-826r).
Sources:
GitHub-reviewed advisory GHSA-cj8f-2fhf-826r: https://github.com/advisories/GHSA-cj8f-2fhf-826r
GitHub public advisory API page: https://api.github.com/advisories?type=reviewed&per_page=100&sort=updated&direction=desc
Record ID: CVE-2026-46498.
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.

Record JSON

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Record details

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