Enterprise SSO (OpenAM) auth bypass enables attacker to impersonate any user including admins and hijack SSO across apps; high-impact for organizations using OpenAM.
CVE-2026-123550
OpenAM SAML auth bypass allows forged assertions to gain admin sessions.
do firstUpgrade to a fixed release: 16.1.4.
Is CVE-2026-123550 being exploited?
Not confirmed. CVE-2026-123550 does not appear in CISA's Known Exploited Vulnerabilities catalog, which records only exploitation that has been observed and reported publicly. That is evidence of absence of a report, not evidence the flaw is unattacked. EPSS currently estimates a 0.56% probability of exploitation in the next 30 days.
How severe is CVE-2026-123550?
CVE-2026-123550 is rated Critical with a CVSS score of 9.3. Severity describes how bad exploitation would be, not how likely it is: pair it with exploitation evidence before deciding what to patch first.
Is there a patch for CVE-2026-123550?
Yes. A fix has been recorded for CVE-2026-123550. The vendor advisory is the authority on the exact fixed version — apply it from there rather than from a summary.
What does CVE-2026-123550 affect?
CVE-2026-123550 affects OpenAM < 16.1.4 (OpenIdentityPlatform/OpenAM). Confirm the exact affected versions against the vendor advisory before deciding you are exposed.
What should I do about CVE-2026-123550?
Upgrade to OpenAM 16.1.4+, enforce WantAssertionsSigned, block PAOS/Artifact if unused
Exploitation status reflects CISA's KEV catalog as we last synced it. Check the catalog directly.
Attackers can submit forged unsigned SAML assertions to obtain sessions as any mapped user (including admins), enabling full SSO account takeover.
Immediate action required
- affected< 16.1.4
As published in the CVE Program record. A version outside these ranges is not a statement that it is unaffected — vendors sometimes understate a range, and distribution-backported builds carry upstream numbers that do not reflect what was patched into them.
timeline
- 8 Nov 2026Published
- 8 Nov 2026CVE record last updated · same day later
- 9 Nov 2026Analysed by vulneraibility.com · 1 day later
also known as
- Advisorygithub.com /OpenIdentityPlatform/OpenAM/security/advisories/GHSA-3j2f-qhrc-rjfj
- Advisoryvulncheck.com /advisories/openam-before-16.1.4-saml-authentication-bypass-via-unsigned-asserti
sources
- CVE List (CVE.org): description, affected versions, references; CVE Terms of Use
- NVD: CVSS and CPE data
- FIRST EPSS: exploit probability and percentile
- OSV: advisory aliases and downstream package versions
- Summary, impact and triage tags: written by our AI analysis pipeline from the sources above. Check them against the sources.