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137 briefs · 53 on CISA KEV

Identity CVEs

A CVE ID is a name for a flaw. The value is knowing whether that flaw lets someone become a user they are not. These briefs cover identity-relevant CVEs from 2023 through 2026: SAML and JWT signature bypasses, Kerberos and Active Directory escalation, cloud-identity token bugs, and secrets-manager failures, written for the person who has to patch, detect, or explain it on Monday.

Each page answers three questions: what broke, why an identity team should care, and what to do this week. Start with a protocol page if you own that stack, or search the catalog. Independent analysis, not a substitute for the advisory.

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All briefs

137
Identity CVEs
53
On CISA KEV
53
Actively exploited
137
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Showing 137 of 137

CVE, CVSS, KEV

How to use this catalog

Identity CVEs: frequently asked questions

What is a CVE?
A CVE (Common Vulnerabilities and Exposures) ID is a public tracking number for a disclosed software flaw. MITRE assigns the ID. NIST's NVD and the vendor advisory usually add the score, the affected versions, and the fix. The ID is the handle. The work is deciding whether it lets someone become a user they are not.
Why do identity CVEs matter more than a typical bug?
An identity flaw is often a master key. A SAML signature-wrapping bug, a JWT alg:none accept, or a cloud token that skips tenant checks does not steal one record. It lets an attacker mint a session as any user, including Global Admin, often with no MFA prompt and no useful log. That is why a single identity CVE can outrank a pile of application RCEs on a real risk register.
What is CISA KEV, and why do we highlight it?
CISA's Known Exploited Vulnerabilities catalog is the short list of flaws that are being used in the wild, not just scored as theoretically bad. Federal civilian agencies have a binding operational directive to patch KEV items on a deadline. For everyone else it is the best public "patch this first" signal we have. If an identity CVE is on KEV, assume an exploit kit already exists.
How should I triage the CVEs on this page?
Patch anything on CISA KEV that you actually run, then anything with a public exploit that sits on an internet-facing SSO or VPN path, then library upgrades that sit under your IdP (ruby-saml, samlify, node-jws) plus a signing-key rotation. Do not wait for NVD to finish scoring. NIST now fully enriches only a fraction of new CVEs. Vendor advisories and KEV are the primary sources.
Is this a complete list of every identity CVE?
No. This is a curated catalog, not every CVE that mentions "authentication." We cover identity protocols, IdP and IAM products, and KEV items that let someone become a user they are not, from 2023 through 2026. We skip generic RCEs with no auth angle and attack techniques that have no CVE (BadSuccessor, PoisonSeed, most AD CS ESC paths). Protocol pages group the briefs and say what to do if you run that stack. If we missed one, tell us.
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Help keep the catalog honest

We missed a 2026 identity CVE, a patch status is stale, or you have a primary source we should cite? Email community@startwithidentity.com or volunteer as a CVE Analyst. Corrections are credited.