CVE-2026-48717

Summary

Open Access Management (OpenAM) is an access management solution. Prior to 16.1.1, AuthorizationCodeGrantTypeHandler requires a code_verifier only when the realm-wide codeVerifierEnforced setting is enabled, even when an authorization code stores a code_challenge. Because that setting is disabled by default, an attacker who intercepts a PKCE-protected authorization code can omit code_verifier and redeem the code, while an explicitly incorrect verifier is rejected. Public clients are directly affected, and confidential-client exploitation additionally requires client authentication material or another redemption context. This issue is fixed in version 16.1.1.

Affected Software

Weaknesses

• CWE-285: CWE-285: Improper Authorization

ADP Enrichment

CISA ADP Vulnrichment

• SSVC:
• Exploitation: none
  • Automatable: no
  • Technical Impact: partial

References

• https://github.com/OpenIdentityPlatform/OpenAM/security/advisories/GHSA-4v2w-2wqp-mc85
• https://github.com/OpenIdentityPlatform/OpenAM/commit/97a34d9fee17395e8e052bfc45eb5855f436153e
• https://github.com/OpenIdentityPlatform/OpenAM/releases/tag/16.1.1

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