Critical security advisoryCriticalFlagged by our vulnerability database: PHP2Shell is on CISA’s exploited list. Most WordPress hosting runs PHP. See if your site is affectedFlagged by our vulnerability database: PHP2Shell is being exploited. DetailsExploited: PHP2Shell. Check your site
HuttenlocherTechnologies
Updated 3 h ago

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.

1,766exploited flaws on CISA’s list
35added in the last 30 days
585new WordPress flaws this week
391,310entries in the database

8 results

  • Oct 6, 2026SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions.CVE-2026-105798 · Computers, phones & browsers · microsoft · reported by GitHubHigh 8.7

    SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.261.029, POST /api/group_documents/upload stores an attacker-controlled group document filename that group_workspaces.html later interpolates into inline Share event handlers. The escapeGroupHtml function leaves apostrophes unchanged, while escapeHtml produces an HTML entity that the browser decodes before JavaScript evaluation, so either path permits the filename to terminate the handler string. An authenticated group Owner, Admin, or DocumentManager can persist script that executes in the SimpleChat origin when another group member clicks Share, allowing access to victim-visible data and actions with the victim session. This issue is fixed in version 0.261.029.

    Product
    simplechat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Oct 6, 2026SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions.CVE-2026-105797 · Computers, phones & browsers · microsoft · reported by GitHubHigh 8.8

    SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. In versions 0.261.003 and 0.261.027, an authorization ordering flaw in POST /api/user/plugins allows an authenticated low-privileged user to omit the top-level MCP type so that _reject_non_admin_mcp_stdio skips inspection before the type is restored from metadata. The stored personal action can then reach McpPluginFactory.create_connector, and MCPStdioPlugin.connect starts the attacker-selected operating-system process under the application service identity when the action tool is invoked. Exploitation requires personal plugins to be enabled and governance to permit MCP actions, and it can expose or modify secrets and data available to the service or disrupt the service. This issue is fixed in version 0.261.031.

    Product
    simplechat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 16, 2026SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions.CVE-2026-57206 · Computers, phones & browsers · microsoft · reported by GitHubHigh 8.6

    SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.206, several plugin validation routes in application/single_app/plugin_validation_endpoint.py, including `POST /api/admin/plugins/test-instantiation`, `GET /api/admin/plugins/health-check/<plugin_name>`, `POST /api/admin/plugins/repair/<plugin_name>`, and `POST /api/plugins/validate`, relied on @swagger_route(security=get_auth_security()) documentation without enforcing @login_required, @user_required, or @admin_required at runtime, allowing unauthenticated or unauthorized clients to invoke plugin validation, health, and repair behavior. This issue is fixed in version 0.241.206.

    Product
    simplechat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jul 16, 2026SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions.CVE-2026-57205 · Computers, phones & browsers · microsoft · reported by GitHubMedium 4.3

    SimpleChat is a secure AI conversation application with personal and group workspaces for document-grounded interactions. Prior to 0.241.203, the authenticated GET /api/user/info/<user_id> and GET /api/user/profile-image/<user_id> endpoints in application/single_app/route_backend_users.py accepted a caller-supplied user_id and read the matching Cosmos DB user-settings document without object-level authorization, allowing a low-privilege authenticated user to retrieve another user's email address, display name, and profile image. This issue is fixed in version 0.241.203.

    Product
    simplechat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 29, 2011Cross-site scripting (XSS) vulnerability in chat/base/admin/login.php in A Really Simple Chat (ARSC) 3.3-rc2 allows remote attackers to inject arbitrary web scrCVE-2011-2470 · Other software · Reallysimplechat · reported by MITREMedium 4.3

    Cross-site scripting (XSS) vulnerability in chat/base/admin/login.php in A Really Simple Chat (ARSC) 3.3-rc2 allows remote attackers to inject arbitrary web script or HTML via the arsc_message parameter.

    Product
    Really Simple Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 29, 2011Multiple SQL injection vulnerabilities in A Really Simple Chat (ARSC) 3.3-rc2 allow remote attackers to execute arbitrary SQL commands via the (1) arsc_user parCVE-2011-2181 · Other software · Reallysimplechat · reported by Red HatHigh 7.5

    Multiple SQL injection vulnerabilities in A Really Simple Chat (ARSC) 3.3-rc2 allow remote attackers to execute arbitrary SQL commands via the (1) arsc_user parameter to base/admin/edit_user.php, (2) arsc_layout_id parameter in base/admin/edit_layout.php, or (3) arsc_room parameter to base/admin/edit_room.php.

    Product
    Really Simple Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Jun 29, 2011Cross-site scripting (XSS) vulnerability in dereferer.php in A Really Simple Chat (ARSC) 3.3-rc2 allows remote attackers to inject arbitrary web script or HTML CVE-2011-2180 · Other software · Reallysimplechat · reported by Red HatMedium 4.3

    Cross-site scripting (XSS) vulnerability in dereferer.php in A Really Simple Chat (ARSC) 3.3-rc2 allows remote attackers to inject arbitrary web script or HTML via the arsc_link parameter.

    Product
    Really Simple Chat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.
  • Nov 9, 2006Static code injection vulnerability in chat_panel.php in the SimpleChat 1.0.0 module for iWare Professional CMS allows remote attackers to inject arbitrary PHP CVE-2006-5837 · Other software · Simplechat · reported by MITREHigh 7.5

    Static code injection vulnerability in chat_panel.php in the SimpleChat 1.0.0 module for iWare Professional CMS allows remote attackers to inject arbitrary PHP code into chat_log.php via the msg parameter.

    Product
    Simplechat
    What to do
    Apply the vendor’s update. The NVD record links to the advisory.

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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