UBUNTU-CVE-2026-48717

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Source
https://ubuntu.com/security/CVE-2026-48717
Import Source
https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48717.json
JSON Data
https://api.osv.dev/v1/vulns/UBUNTU-CVE-2026-48717
Upstream
Published
2026-09-15T10:17:00Z
Modified
2026-09-24T02:00:29Z
Severity
  • 9.1 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:N/SC:N/SI:N/SA:N CVSS Calculator
  • Ubuntu - medium
Summary
[none]
Details

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.

References

Affected packages

Ubuntu:16.04:LTS / openam

Package

Name
openam
Purl
pkg:deb/ubuntu/openam?arch=source&distro=xenial

Affected ranges

Type
ECOSYSTEM
Events
Introduced
0 Unknown introduced version / All previous versions are affected

Affected versions

1.*
1.4.0-1build6

Ecosystem specific 

{
    "binaries": [
        {
            "binary_name": "openam",
            "binary_version": "1.4.0-1build6"
        }
    ]
}

Database specific

source 
"https://github.com/canonical/ubuntu-security-notices/blob/main/osv/cve/2026/UBUNTU-CVE-2026-48717.json"