Vulnerability database
Every flaw the U.S. government’s cybersecurity agency (CISA) has confirmed attackers are using, plus the new WordPress plugin and theme bugs published each day, sorted by what they mean for a small business. We refresh it twice a day. If you see something your website or office runs, tell us.
5 results
May 12, 2026YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum.CVE-2026-43939 · Other software · YAFNET · reported by GitHubHigh 7.3
YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the thread posting and reply feature accepts user-supplied content via a a post or reply that is stored server-side and later rendered back into the thread page without adequate HTML sanitization or contextual output encoding. This vulnerability is fixed in 4.0.5 and 3.2.12.
- Product
- YAFNET
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 12, 2026YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum.CVE-2026-43938 · Other software · YAFNET · reported by GitHubHigh 8.1
YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5 and 3.2.12, the application's database logger (YAFNET.Core/Logger/DbLogger.cs) captures the incoming request's User-Agent header into a JObject, serializes it with JsonConvert, and stores the result in the EventLog.Description column whenever an event (e.g., an unhandled exception) is logged. The admin event-log page (YetAnotherForum.NET/Pages/Admin/EventLog.cshtml.cs) later deserializes that JSON in FormatStackTrace() and interpolates the UserAgent value directly into an HTML string with no encoding, and the Razor view EventLog.cshtml emits the result through @Html.Raw. This vulnerability is fixed in 4.0.5 and 3.2.12.
- Product
- YAFNET
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
May 12, 2026YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum.CVE-2026-43937 · Other software · YAFNET · reported by GitHubHigh 8.8
YetAnotherForum.NET (YAF.NET) is a C# ASP.NET forum. Prior to 4.0.5, Any admin OnPost… handler executes its side effects before the ResultFilterAttribute rewrites the response to a 302 to /Info/4. The most impactful abuse is /Admin/RunSql, whose OnPostRunQuery binds Editor from the POST body and passes it straight to IDbAccess.RunSql with no caller check, yielding arbitrary SQL execution for any low-privileged user. This vulnerability is fixed in 4.0.5.
- Product
- YAFNET
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Nov 1, 2019A cross-site scripting (XSS) vulnerability in Jitbit .NET Forum (aka ASP.NET forum) 8.3.8 allows remote attackers to inject arbitrary web script or HTML via theCVE-2019-18636 · Other software · Jitbit · reported by MITREMedium 5.4
A cross-site scripting (XSS) vulnerability in Jitbit .NET Forum (aka ASP.NET forum) 8.3.8 allows remote attackers to inject arbitrary web script or HTML via the gravatar URL parameter.
- Product
- .net Forum
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordreallinkers.github.iojitbit.com
Aug 17, 2006Cross-site scripting (XSS) vulnerability in calendar.asp in ASPPlayground.NET Forum Advanced Edition 2.4.5 Unicode, and possibly other versions before October 1CVE-2006-4206 · Other software · Aspplayground.net · reported by MITREMedium 4.3
Cross-site scripting (XSS) vulnerability in calendar.asp in ASPPlayground.NET Forum Advanced Edition 2.4.5 Unicode, and possibly other versions before October 15, 2006, allows remote attackers to inject arbitrary web script or HTML via the calendarID parameter.
- Product
- Aspplayground.net
- What to do
- Apply the vendor’s update. The NVD record links to the advisory.
Full record and what to do →NVD recordnvd.nist.govsecurityreason.com
Where this comes from: the exploited list is CISA’s Known Exploited Vulnerabilities catalog. Everything else is the whole National Vulnerability Database, where each record is published by the team that found the bug (Wordfence, Patchstack, WPScan, the vendors themselves and others); we show who. Exploit odds are FIRST’s EPSS, updated daily. Titles and categories are ours, so check the linked record before acting on a detail. For a write-up of the big ones, see our advisories. Every vendor, and every WordPress plugin and theme with a recorded flaw, also has its own page. All of it is free to reuse as JSON, CSV or RSS.
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