CVE-2026-39772 WordPress Captcha by BestWebSoft plugin <= 5.2.8 - Bypass Vulnerability vulnerability
Medium 5.3
Published
Updated
Check this codebase for CVE-2026-39772 and fix it if it is affected.
What it is: CVE-2026-39772 is a medium-severity vulnerability in Captcha by BestWebSoft, published on 6 Oct 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-2026-39772 in the wild and no public exploit code.
Affected product: Captcha by BestWebSoft. 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-2026-39772/ (Markdown: https://insights.sbomify.com/CVE-2026-39772/index.md)
Unauthenticated attackers can bypass the Captcha by BestWebSoft plugin's security checks, allowing them to circumvent anti-spam protections.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2026-39772?
CVE-2026-39772 is a medium-severity vulnerability in Captcha by BestWebSoft, published on 6 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
Unauthenticated Bypass Vulnerability in Captcha by BestWebSoft <= 5.2.8 versions.
Weakness: CWE-290
Which versions are affected by CVE-2026-39772?
How do I fix CVE-2026-39772?
No fix has been published for CVE-2026-39772 yet. Limit exposure of the affected software until one is available.
Is CVE-2026-39772 being exploited?
There is no known exploitation of CVE-2026-39772 in the wild and no public exploit code.
Sources
Also known as GHSA-jwhg-573g-fxv2.