# CVE-2026-75800: Frontegg SAML SSO <= 1.0.1 - Unauthenticated Account Takeover via Unverified SAMLResponse

> Unauthenticated attackers can bypass SAML signature verification to log in as any user, including administrators, in the Frontegg SAML SSO WordPress plugin.

- **Severity:** Critical 9.8 (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`)
- **Exploited in the wild:** Not known
- **Login needed:** Not needed
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** No
- **Published:** 12 Sep 2026
- **Updated:** 12 Sep 2026
- **Also known as:** GHSA-97p7-8jv8-2rmm

## What is CVE-2026-75800?

CVE-2026-75800 is a critical authentication bypass vulnerability in Unknown Frontegg SAML SSO, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.

### Official description

The Frontegg SAML SSO WordPress plugin through 1.0.1 does not verify the signature or issuer of SAML authentication responses before establishing a session, allowing unauthenticated attackers to log in as any user, including administrators, as well as to create arbitrary accounts.

Weakness: CWE-287 (Improper Authentication)

## Which versions are affected by CVE-2026-75800?


## How do I fix CVE-2026-75800?

No fix has been published for CVE-2026-75800 yet. Limit exposure of the affected software until one is available.

## Is CVE-2026-75800 being exploited?

There is no known exploitation of CVE-2026-75800 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for CVE-2026-75800 and fix it if it is affected.

What it is: CVE-2026-75800 is a critical authentication bypass vulnerability in Unknown Frontegg SAML SSO, published on 12 Sep 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Exploitation: There is no known exploitation of CVE-2026-75800 in the wild and no public exploit code.

Affected product: Unknown Frontegg SAML SSO. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/CVE-2026-75800/ (Markdown: https://insights.sbomify.com/CVE-2026-75800/index.md)
```

## Sources

- CVE record: https://www.cve.org/CVERecord?id=CVE-2026-75800
- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-75800
- OSV: https://osv.dev/vulnerability/CVE-2026-75800

---
From sbomify Insights: https://insights.sbomify.com/CVE-2026-75800/
Summaries are generated and may contain mistakes; the official description above is the record.