Nodebb

Stored cross-site scripting in NodeBB before 4.15.0 allows any federated ActivityPub actor to inject persistent malicious JavaScript into forum posts viewed by all subsequent users. The renderEmoji function fails to HTML-encode tag.icon.url and tag.name values sourced from incoming ActivityPub Create/Note objects before writing them into stored post content, creating a durable XSS sink reachable from the open Fediverse. A vendor-released patch exists in NodeBB v4.15.0 (2026-08-12); no public exploit code or CISA KEV listing has been identified at time of analysis.

Author spoofing in NodeBB's ActivityPub federation allows a remote federated actor to forge posts and private messages attributed to arbitrary local users, including the administrator (uid 1). Because the inbound middleware validates the HTTP-signature actor and the origin of object.id but never binds attributedTo to the authenticated sender, an attacker with a valid remote signature can impersonate any local account. Publicly available exploit code exists (reported by VulnCheck), though there is no public exploit identified in CISA KEV and the flaw only affects instances with federation enabled.

NodeBB v4.3.0 is vulnerable to SQL injection in its search-categories API endpoint (/api/v3/search/categories). Rated high severity (CVSS 8.6), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

Cross-Site Scripting (XSS) vulnerability in NodeBB v4.0.4 and before allows remote attackers to store arbitrary code in the admin API Access token generator. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

Cross-Site Scripting (XSS) vulnerability in NodeBB v4.0.4 and before allows remote attackers to store arbitrary code and potentially render the blacklist IP functionality unusable until content is. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. No vendor patch available.

A persistent cross-site scripting (XSS) vulnerability in NodeBB v3.11.0 allows remote attackers to store arbitrary code in the 'about me' section of their profile. Rated medium severity (CVSS 4.6), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

NodeBB 3.6.7 is vulnerable to Incorrect Access Control, e.g., a low-privileged attacker can access the restricted tabs for the Admin group via "isadmin":true. Rated medium severity (CVSS 6.3), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Denial-of-service in NodeBB <= v2.8.10 allows unauthenticated attackers to trigger a crash, when invoking `eventName.startsWith()` or `eventName.toString()`, while processing Socket.IO messages via. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

A remote code execution (RCE) vulnerability in the xmlrpc.php endpoint of NodeBB Inc NodeBB forum software prior to v1.18.6 allows attackers to execute arbitrary code via crafted XML-RPC requests. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available and no vendor patch available.

NodeBB is affected by a Cross-Site WebSocket Hijacking vulnerability due to missing validation of the request origin. Rated medium severity (CVSS 4.7), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

NodeBB is Node.js based forum software. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity. This Path Traversal vulnerability could allow attackers to access files and directories outside the intended path.

NodeBB is an open source Node.js based forum software. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

A vulnerability, which was classified as problematic, was found in NodeBB up to 2.5.7. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

NodeBB Forum Software is powered by Node.js and supports either Redis, MongoDB, or a PostgreSQL database. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required. Public exploit code available.

NodeBB Forum Software is powered by Node.js and supports either Redis, MongoDB, or a PostgreSQL database. Rated critical severity (CVSS 9.8), this vulnerability is remotely exploitable, no authentication required, low attack complexity.

Nodebb is an open source Node.js based forum software. Rated medium severity (CVSS 5.0), this vulnerability is remotely exploitable, low attack complexity. Public exploit code available.

Nodebb is an open source Node.js based forum software. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Nodebb is an open source Node.js based forum software. Rated high severity (CVSS 7.5), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

NodeBB before version 1.14.3 has a bug introduced in version 1.12.2 in the validation logic that makes it possible to change the password of any user on a running NodeBB forum by sending a specially. Rated critical severity (CVSS 9.9), this vulnerability is remotely exploitable, low attack complexity. This Improper Privilege Management vulnerability could allow attackers to escalate privileges to gain unauthorized elevated access.

Multiple cross-site scripting (XSS) vulnerabilities in NodeBB before 0.7 allow remote attackers to inject arbitrary web script or HTML via vectors related to (1) javascript: or (2) data: URLs. Rated medium severity (CVSS 6.1), this vulnerability is remotely exploitable, no authentication required, low attack complexity.