PatchTheCVECVE-2026-56425: The Azure Active Directory (AAD) authentication implementation contained multiple weaknesses in its OAuth 2.0
CVE-2026-56425 is a high-severity flaw (CVSS 8.8) affecting misp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
The Azure Active Directory (AAD) authentication implementation contained multiple weaknesses in its OAuth 2.0 authorization flow that could allow attackers to bypass important security guarantees provided by the protocol. The application used the PHP session identifier (session_id()) as the OAuth state parameter. Because session identifiers are long-lived authentication credentials, exposing them in OAuth redirect URLs could leak valid session
Why this priority
- High severity
A fixed release or distro patch exists.
Risk facts
| CVSS score | 8.8 (High) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | Required |
| EPSS exploit chance | 0.5% (top 60%) |
| CISA exploited list | No |
| Weakness | CWE-384 |
| Published | 2026-06-22 |
| Last modified | 2026-06-26 |
Last updated 2026-06-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Am I affected?
Timeline
- Published CVE record published
- Updated Record last modified
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-56425?
misp: upgrade to 2.5.42. Exact commands for each OS are on this page.
Is CVE-2026-56425 being exploited?
CVE-2026-56425 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-56425 affect?
CVE-2026-56425 affects misp. Severity is high (CVSS 8.8). The Azure Active Directory (AAD) authentication implementation contained multiple weaknesses in its OAuth 2.0 authorization flow that could allow attackers to bypass important security guarantees provided by the protocol. The application
How urgent is CVE-2026-56425?
Priority 41/100. High severity
Software pages
PHP vulnerabilities · Azure vulnerabilities · Active Directory vulnerabilities
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