CVE-2026-3531 OpenID Connect / OAuth client - Moderately critical - Access bypass - SA-CONTRIB-2026-026
Medium 6.5
Published
Updated
Check this codebase for CVE-2026-3531 and fix it if it is affected.
What it is: CVE-2026-3531 is a medium-severity vulnerability in Drupal OpenID Connect / OAuth client, published on 26 Mar 2026.
Exploitation: There is no known exploitation of CVE-2026-3531 in the wild and no public exploit code.
Affected product: Drupal OpenID Connect / OAuth client. 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-2026-3531/ (Markdown: https://insights.sbomify.com/CVE-2026-3531/index.md)
- Exploited in the wild
- Not known
- Fix
- Available
What is CVE-2026-3531?
CVE-2026-3531 is a medium-severity vulnerability in Drupal OpenID Connect / OAuth client, published on 26 Mar 2026.
Official description
Authentication Bypass Using an Alternate Path or Channel vulnerability in Drupal OpenID Connect / OAuth client allows Authentication Bypass.This issue affects OpenID Connect / OAuth client: from 0.0.0 before 1.5.0.
Weakness: CWE-288
Which versions are affected by CVE-2026-3531?
It affects 1 product.
Linux distribution packages (1)
drupal/openid_connect Packagist:https://packages.drupal.org/8 | All versions | 1.5.0 |
Products include Bojanz Openid Connect \/ Oauth Client.
How do I fix CVE-2026-3531?
Upgrade to a fixed version.
Is CVE-2026-3531 being exploited?
There is no known exploitation of CVE-2026-3531 in the wild and no public exploit code.
Other vulnerabilities in Drupal OpenID Connect / OAuth client
Sources
Also known as DRUPAL-CONTRIB-2026-026, GHSA-f2x9-px9q-jxw2.