# CVE-2026-48717: Open Identity Platform OpenAM OAuth authorization bypass in PKCE challenge

Source: https://junglewise.ai/threats/cve-2026-48717-open-identity-platform-openam-oauth-authorization-bypass-in-pkce  
Publisher: Junglewise Threat Intelligence, https://junglewise.ai/threats  
Published: 2026-09-15. Updated: 2026-06-29  
License: CC BY 4.0 with a link back

CVE-2026-48717 · Severity: medium · CVSS 4 · Published 2026-09-15

OpenAM is an identity and access management platform used to secure web applications and services. A security flaw in its login process allows attackers who intercept a temporary authorization code to bypass a security check called PKCE. This could allow an unauthorized person to gain access to a user's account or sensitive data without having the required secret verification key.

Technologies: [org.openidentityplatform.openam:openam-oauth2 (Maven)](https://junglewise.ai/threats/technologies/org-openidentityplatform-openam-openam-oauth2), [Open Identity Platform OpenAM Community Edition](https://junglewise.ai/threats/technologies/openam-community-edition). Vendors: [Maven](https://junglewise.ai/threats/vendors/maven), [Open Identity Platform](https://junglewise.ai/threats/vendors/open-identity-platform).

## Quick answers

**Is CVE-2026-48717 exploited in the wild?** No. Junglewise Threat Intelligence has no report of CVE-2026-48717 being exploited in the wild.

**How severe is CVE-2026-48717?** Medium severity, with a CVSS score of 4, published 15 September 2026.

**Which products and versions are affected?** org.openidentityplatform.openam:openam-oauth2 (Maven) <= 16.0.6, ECOSYSTEM:introduced=0,fixed=16.1.1; Open Identity Platform OpenAM Community Edition <= 16.0.6.

**Is there a fix for CVE-2026-48717?** Yes. org.openidentityplatform.openam:openam-oauth2 (Maven): upgrade to 16.1.1 or later. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

**How is CVE-2026-48717 attacked?** It is attacked over the network, in a hosted service.

**Am I affected by CVE-2026-48717?** Check whether you run org.openidentityplatform.openam:openam-oauth2 (Maven) or Open Identity Platform OpenAM Community Edition at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

## How to fix

- org.openidentityplatform.openam:openam-oauth2 (Maven): upgrade to 16.1.1 or later

  ```sh
  # set org.openidentityplatform.openam:openam-oauth2 to 16.1.1 in your pom.xml or build.gradle
  ```


## Technical details

An improper authorization vulnerability (CWE-285) exists in OpenAM's OAuth2 implementation. While the authorize endpoint correctly stores a code_challenge, the token endpoint only enforces the presence of a code_verifier if the 'codeVerifierEnforced' setting is enabled (it is disabled by default). If this setting is off, an attacker can redeem a PKCE-protected authorization code by simply omitting the code_verifier parameter, as the system only performs a challenge check if a verifier is actually provided. This allows for authorization code injection or interception attacks against public clients. The issue is patched in version 16.1.1.

## Affected products

- Open Identity Platform OpenAM Community Edition <= 16.0.6

## Identifiers

- CVE-2026-48717
- GHSA-4v2w-2wqp-mc85

## Timeline

- 2026-06-28: disclosed
- 2026-06-29: advisory

## References

- [https://api.github.com/users/wodzen](https://api.github.com/users/wodzen)
- [https://github.com/wodzen](https://github.com/wodzen)
- [https://api.github.com/users/wodzen/gists%7B/gist_id%7D](https://api.github.com/users/wodzen/gists%7B/gist_id%7D)
- [https://api.github.com/users/wodzen/repos](https://api.github.com/users/wodzen/repos)
- [https://avatars.githubusercontent.com/u/25558174?v=4](https://avatars.githubusercontent.com/u/25558174?v=4)
- [https://api.github.com/users/wodzen/events%7B/privacy%7D](https://api.github.com/users/wodzen/events%7B/privacy%7D)

## Related threats

- [OpenIdentityPlatform OpenAM auth bypass in RADIUS module](https://junglewise.ai/threats/cve-2026-46560-openidentityplatform-openam-auth-bypass-in-radius-module)
- [Open Identity Platform OpenAM session hijacking in CDCServlet](https://junglewise.ai/threats/cve-2026-45049-open-identity-platform-openam-session-hijacking-in-cdcservlet)
- [Open Identity Platform OpenAM Reflected XSS in OAuth2 consent page](https://junglewise.ai/threats/cve-2026-62280-open-identity-platform-openam-reflected-xss-in-oauth2-consent)
- [Open Identity Platform OpenAM OAuth client impersonation in JWKS resolver](https://junglewise.ai/threats/cve-2026-47426-open-identity-platform-openam-oauth-client-impersonation-in-jwks)
- [OpenIdentityPlatform OpenAM RCE via Groovy sandbox escape](https://junglewise.ai/threats/cve-2026-47424-openidentityplatform-openam-rce-via-groovy-sandbox-escape)