Reverse CAPTCHA: Evaluating LLM Susceptibility to Invisible Unicode Instruction Injection

We introduce Reverse CAPTCHA, an evaluation framework that tests whether large language models follow invisible Unicode-encoded instructions embedded in otherwise normal-looking text. Unlike traditional CAPTCHAs that distinguish humans from machines, our benchmark exploits a capability gap: model...

DRUPAL-CONTRIB-2026-015

This module enables you to protect web forms from automated spam by requiring users to pass a challenge. The module doesn't sufficiently invalidate used security tokens under certain scenarios, which can lead to the CAPTCHA being bypassed on subsequent submissions. This vulnerability is mitigated...

PT-2026-22086

Name of the Vulnerable Software and Affected Versions Drupal CAPTCHA versions 0.0.0 through 1.16.9 Drupal CAPTCHA versions 2.0.0 through 2.0.9 Description A functionality bypass exists in Drupal CAPTCHA due to insufficient invalidation of security tokens. An attacker may bypass the CAPTCHA on...

CAPTCHA - Moderately critical - Access bypass - SA-CONTRIB-2026-015

This module enables you to protect web forms from automated spam by requiring users to pass a challenge. The module doesn't sufficiently invalidate used security tokens under certain scenarios, which can lead to the CAPTCHA being bypassed on subsequent submissions. This vulnerability is mitigated...

WordPress Conditional CAPTCHA plugin <= 4.0.0 - Open Redirect vulnerability

Open Redirect vulnerability discovered by Bob Matyas in WordPress Plugin Conditional CAPTCHA versions = 4.0.0...

WordPress SiteGuard WP Plugin plugin <= 1.7.9 - Captcha Bypass vulnerability

Captcha Bypass vulnerability discovered by Ahmad in WordPress Plugin SiteGuard WP Plugin versions = 1.7.9...

CVE-2026-1369

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369 Conditional CAPTCHA <= 4.0.0 - Open Redirect

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369 Conditional CAPTCHA <= 4.0.0 - Open Redirect

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

PT-2026-21418

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

CVE-2026-1369: URL Redirection to Untrusted Site

The Conditional CAPTCHA WordPress plugin through 4.0.0 does not validate a parameter before redirecting the user to its value, leading to an Open Redirect issue...

WordPress plugin Conditional CAPTCHA 安全漏洞

WordPress and WordPress plugins are both products of the WordPress Foundation. WordPress is a blog platform developed using the PHP language. This platform allows for the creation of personal blog websites on servers based on PHP and MySQL. A WordPress plugin is an application plugin. There are...

New ClickFix Attack Targets Crypto Wallets and 25+ Browsers with Infostealer

Researchers at CyberProof have identified a new fake captcha campaign linked to the ClickFix operation. This stealthy infostealer targets over 25 browsers, cryptocurrency wallets like MetaMask, and gaming accounts by tricking users into executing malicious PowerShell commands...

ClickFix added nslookup commands to its arsenal for downloading RATs

ClickFix malware campaigns are all about tricking the victim into infecting their own machine. Apparently, the criminals behind these campaigns have figured out that mshta and Powershell commands are increasingly being blocked by security software, so they have developed a new method using...

Next-Gen CAPTCHAs: Leveraging the Cognitive Gap for Scalable and Diverse GUI-Agent Defense

The rapid evolution of GUI-enabled agents has rendered traditional CAPTCHAs obsolete. While previous benchmarks like OpenCaptchaWorld established a baseline for evaluating multimodal agents, recent advancements in reasoning-heavy models, such as Gemini3-Pro-High and GPT-5.2-Xhigh have effectively...

UBUNTU-CVE-2025-61635

Vulnerability in Wikimedia Foundation ConfirmEdit. This vulnerability is associated with program files includes/FancyCaptcha/ApiFancyCaptchaReload.Php. This issue affects ConfirmEdit:...

CVE-2025-61635 Add rate limiting to ApiFancyCaptchaReload

Vulnerability in Wikimedia Foundation ConfirmEdit. This vulnerability is associated with program files includes/FancyCaptcha/ApiFancyCaptchaReload.Php. This issue affects ConfirmEdit:...