CVE-2021-24838— AnyComment < 0.3.5 - Open Redirect
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I. Basic Information for CVE-2021-24838
Vulnerability Information
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Vulnerability Title
AnyComment < 0.3.5 - Open Redirect
Source: NVD (National Vulnerability Database)
Vulnerability Description
The AnyComment WordPress plugin before 0.3.5 has an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated first, leading to an Open Redirect issue, which according to the vendor, is a feature.
Source: NVD (National Vulnerability Database)
CVSS Information
N/A
Source: NVD (National Vulnerability Database)
Vulnerability Type
指向未可信站点的URL重定向(开放重定向)
Source: NVD (National Vulnerability Database)
Vulnerability Title
WordPress plugin AnyComment 输入验证错误漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
WordPress和WordPress plugin都是WordPress基金会的产品。WordPress是一套使用PHP语言开发的博客平台。该平台支持在PHP和MySQL的服务器上架设个人博客网站。WordPress plugin是一个应用插件。 WordPress plugin AnyComment 0.3.5 之前版本存在输入验证错误漏洞，该漏洞源于 AnyComment 有一个 API 端口，它通过 redirect 参数将用户输入在不经过验证的情况下传递给 wp_redirect 函数从而导致了
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)
Affected Products
| Vendor | Product | Affected Versions | CPE | Subscribe |
|---|---|---|---|---|
| Unknown | AnyComment | 0.3.5 ~ 0.3.5 | - |
II. Public POCs for CVE-2021-24838
| # | POC Description | Source Link | Shenlong Link |
|---|---|---|---|
| 1 | WordPress AnyComment plugin before 0.3.5 contains an open redirect vulnerability via an API endpoint which passes user input via the redirect parameter to the wp_redirect() function without being validated. An attacker can redirect a user to a malicious site and possibly obtain sensitive information, modify data, and/or execute unauthorized operations. | https://github.com/projectdiscovery/nuclei-templates/blob/main/http/cves/2021/CVE-2021-24838.yaml | POC Details |
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Same Patch Batch · Unknown · 2022-01-17 · 11 CVEs total
| CVE-2021-25067 | Landing Page Builder < 1.4.9.6 - Authenticated Reflected Cross-Site Scripting (XSS) | |
| CVE-2021-25065 | Smash Balloon Social Post Feed < 4.1.1 - Authenticated Reflected Cross-Site Scripting (XSS | |
| CVE-2021-25061 | WP Booking System – Booking Calendar < 2.0.15 - Authenticated Reflected Cross-Site Scripti | |
| CVE-2021-25046 | Modern Events Calendar Lite < 6.2.0 - Subscriber+ Category Add Leading to Stored XSS | |
| CVE-2021-25037 | All In One SEO < 4.1.5.3 - Authenticated SQL Injection | |
| CVE-2021-25036 | All In One SEO < 4.1.5.3 - Authenticated Privilege Escalation | |
| CVE-2021-25024 | Event Calendar < 1.1.51 - Reflected Cross-Site Scripting | |
| CVE-2021-25005 | SEUR Oficial < 1.7.0 - Admin+ Stored Cross-Site Scripting | |
| CVE-2021-24909 | ACF Photo Gallery Field < 1.7.5 - Reflected Cross-Site Scripting | |
| CVE-2021-25025 | Event Calendar < 1.1.51 - Subscriber+ Event Creation |
IV. Related Vulnerabilities
Same product: AnyComment
- CVE-2025-62874
WordPress AnyComment plugin <= 0.3.6 - Broken Access Control - CVE-2025-60240
WordPress AnyComment plugin <= 0.3.6 - Local File Inclusion - CVE-2025-48091
WordPress AnyComment plugin <= 0.3.6 - SQL Injection vulnera - CVE-2022-0279
AnyComment < 0.2.18 - Comment Rating Increase/Decrease via R - CVE-2022-0134
AnyComment < 0.2.18 - Arbitrary HyperComments Import/Revert
Same vendor: Unknown
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Custom CSS JS PHP <= 2.0.7 - Unauthenticated SQL Injection t - CVE-2026-4935
SureTriggers < 1.1.23 – Unauthenticated SQLi - CVE-2026-5335
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Frontend File Manager Plugin <= 23.6 - Subscriber+ Arbitrary - CVE-2026-5306
Check & Log Email < 2.0.13 - Unauthenticated Stored XSS
Same weakness: CWE-601
- CVE-2026-42350
Kargo: Open Redirect in UI OIDC Login Flow via redirectTo Qu - CVE-2026-42195
Unvalidated gitlab URL parameter redirects OAuth authorize s - CVE-2026-3318
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Open Redirect in DivvyDrive Information Technologies' DivvyD
V. Comments for CVE-2021-24838
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