Signal is active with 3 mentions in latest observed window
Recommended action window: Monitor and triage in normal cycle
NVD description
2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 8.0.0, when AUTHENTICATION_GUARD=reverse-proxy-guard is enabled, ReverseProxyGuard::user() reads the default REMOTE_USER identity header, or a custom identity header selected by the AUTH_PROXY_HEADER_FOR_USER configuration setting, without confirming that the request originated from a configured trusted proxy. A remote client that can reach the application directly can forge the selected identity header and authenticate as an existing user, including an administrator, gaining access to stored 2FA secrets and account or application management functions. This issue is fixed in version 8.0.0.
Priority
LOW
Exploitation
NONE
PoC
NONE
Patch
NONE
Momentum
NONE
🆕 New CVEs 2FAuth: 2 critical CVEs Worst: auth bypass in reverse proxy guard enables admin takeover (CVE-2026-63438) Patch → 8.0.0 https://cve.now/CVE-2026-63438?release=CVE-2026-63439&utm_source=x&utm_medium=social&utm_campaign=cvedotnow&utm_content=rollup
CVE-2026-63439 2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate their security codes. Prior to 8.0.0, when AUTHENTICATION_GUARD=reverse-proxy-guar… https://www.cve.org/CVERecord?id=CVE-2026-63439
🆕 New CVE: CVE-2026-63439 (CVSS 9.8, Enclave score 7/10) 2FAuth: Reverse Proxy Guard Trusts Client-Supplied Headers Without Proxy Verification Remote, no login needed. 2FAuth is a web app to manage Two-Factor Authentication (2FA) accounts and generate… https://app.enclave.ai/threat-feed/CVE-2026-63439