CVE-2026-19677 Authentication Bypass Leading to Server-Side Command Execution
Critical 9.3
Published
Updated
Check this codebase for CVE-2026-19677 and fix it if it is affected.
What it is: CVE-2026-19677 is a critical vulnerability in onPhase Forms, published on 23 Oct 2026.
Exploitation: There is no known exploitation of CVE-2026-19677 in the wild and no public exploit code.
Affected product: onPhase Forms. 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-2026-19677/ (Markdown: https://insights.sbomify.com/CVE-2026-19677/index.md)
- Exploited in the wild
- Not known
- Fix
- None listed
What is CVE-2026-19677?
CVE-2026-19677 is a critical vulnerability in onPhase Forms, published on 23 Oct 2026.
Official description
An authentication bypass vulnerability in the public onPhase/ frevvo registration form version 11.0.14 allows an unauthenticated remote attacker to authenticate as an arbitrary tenant user, obtain TenantAdmin and Designer privileges, and execute arbitrary operating system commands via manipulation of registration parameters containing a valid tenant name and existing user identifier.
Weakness: CWE-306
Which versions are affected by CVE-2026-19677?
How do I fix CVE-2026-19677?
No fix has been published for CVE-2026-19677 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-19677 being exploited?
There is no known exploitation of CVE-2026-19677 in the wild and no public exploit code.
Sources
Also known as GHSA-542f-hr4v-mv7f.