Is CVE-2026-39772 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-39772 being exploited in the wild.

How severe is CVE-2026-39772?

Medium severity, with a CVSS score of 5.3, published 6 October 2026.

Is there a fix for CVE-2026-39772?

No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.

How is CVE-2026-39772 attacked?

It is attacked over the network.

Am I affected by CVE-2026-39772?

Check whether you run BestWebSoft Captcha at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-39772: Captcha by BestWebSoft authentication bypass

CVE-2026-39772 · Severity: medium · CVSS 5.3 · Published 2026-10-06

Captcha by BestWebSoft is a WordPress plugin that protects websites from automated attacks by requiring users to solve CAPTCHA challenges. An unauthenticated bypass vulnerability allows attackers to circumvent the CAPTCHA security check without authorization, enabling automated access to protected resources such as comment forms, registration pages, or login endpoints.

Vendors: BestWebSoft.

Quick answers

Is CVE-2026-39772 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-39772 being exploited in the wild.
How severe is CVE-2026-39772?: Medium severity, with a CVSS score of 5.3, published 6 October 2026.
Which products and versions are affected?: BestWebSoft Captcha <= 5.2.8.
Is there a fix for CVE-2026-39772?: No fixed version is recorded yet. Check the vendor's advisory in the references below. If you run it, Junglewise drafts a mitigation that fits your setup and applies it once you approve, with senior security engineers behind it.
How is CVE-2026-39772 attacked?: It is attacked over the network.
Am I affected by CVE-2026-39772?: Check whether you run BestWebSoft Captcha at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The plugin fails to properly validate CAPTCHA responses, allowing attackers to bypass security checks without authentication or user interaction. An unauthenticated network-based attacker can exploit this to submit forms or perform actions that should be protected by the CAPTCHA mechanism.

Affected products

BestWebSoft Captcha <= 5.2.8

Timeline

2026-10-05: disclosed
2026-10-06: advisory

References

This page as Markdown. Free to reuse under CC BY 4.0 with a link back.