TI-2026-67970 Aliases CVE-2026-39772 GHSA-jwhg-573g-fxv2

Authentication bypass in Captcha by BestWebSoft WordPress plugin

LOW 30CWE-290Published 2026-10-06 · Updated 2026-10-06

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Security bypass
Confidentiality · integrity · availability: None · Low · None
Fix status: No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-290.

Summary

Captcha by BestWebSoft for WordPress, versions through 5.2.8, is affected. The flaw is an authentication bypass by spoofing (CWE-290) that lets an unauthenticated remote attacker bypass the captcha check. The CVSS vector rates the impact as a low integrity impact with no confidentiality or availability impact.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Description from the CNA

Unauthenticated Bypass Vulnerability in Captcha by BestWebSoft <= 5.2.8 versions.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.00342 27th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
BestWebSoft	Captcha by BestWebSoft	up to 5.2.8	—	No fix listed	CNA

Captcha by BestWebSoft VendorBestWebSoft Affected up to 5.2.8 Fixed in — No fix listed CNA

Remediation

The sources list no fixed version for Captcha by BestWebSoft.

Written with Claude Haiku 5.5 from the sources below · 2026-10-29

Timeline

2026-10-06 Threatist record created from CVE-2026-39772
2026-10-06 Alias added: GHSA-jwhg-573g-fxv2
2026-10-06 CISA SSVC decision points changed

References

Other 1

https://patchstack.com/database/wordpress/plugin/captcha-bws/vulnerability/wordpress-captcha-by-bestwebsoft-plugin-5-2-8-bypass-vulnerability-vulnerability?_s_id=cve

TI-2022-03136 Post to CSV by BestWebSoft <= 1.4.0 - Author+ CSV Injection CVSS 3.1CRITICAL 9.8
TI-2023-00778 User Role by BestWebSoft < 1.6.7 - Privilege Escalation via CSRF CVSS 3.1HIGH 8.8
TI-2023-00725 Gallery by BestWebSoft < 4.7.0 - Author+ SQL Injection CVSS 3.1HIGH 8.8
TI-2023-00724 Gallery by BestWebSoft < 4.7.0 - Author+ Stored Cross-Site Scripting CVSS 3.1MEDIUM 5.4
TI-2017-14121 BestWebSoft Contact Form Plugin Stored cross site scriting CVSS 3.1MEDIUM 5.4
TI-2024-02914 Quotes and Tips < 1.45 - Admin+ Arbitrary File Upload CVSS 3.1MEDIUM 4.9

See all 86 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences