CVE-2025-34291 - Langflow <= 1.6.9 cors misconfiguration to token hijack & rce

CVE ID : CVE-2025-34291 Published : Dec. 5, 2025, 10:27 p.m. | 45 minutes ago Description : Langflow versions up to and including 1.6.9 contain a chained vulnerability that enables account takeover and remote code execution. An overly permissive CORS configuration (allow_origins='*' with allow_credentials=True) combined with a refresh token cookie configured as SameSite=None allows a malicious webpage to perform cross-origin requests that include credentials and successfully call the refresh endpoint. An attacker-controlled origin can therefore obtain fresh access_token / refresh_token pairs for a victim session. Obtained tokens permit access to authenticated endpoints — including built-in code-execution functionality — allowing the attacker to execute arbitrary code and achieve full system compromise. Severity: 9.4 | CRITICAL Visit the link for more details, such as CVSS details, affected products, timeline, and more...

Source: Telegram CVE Monitor