Path traversal flaw in AI dev platform Langflow exploited in attacks
CVE-2026-5027 path traversal flaw in Langflow AI dev platform is actively exploited.
Attackers are actively exploiting CVE-2026-5027, a critical path traversal vulnerability in the AI development platform Langflow, to write arbitrary files on exposed servers. The flaw allows unauthenticated attackers to write files to any location due to improper sanitization of filenames. Langflow users are urged to upgrade to version 1.10.0 to patch the vulnerability.
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The lesson from this incident
Full lessonAttackers are actively exploiting CVE-2026-5027, a critical path traversal vulnerability in Langflow that allows unauthenticated attackers to write arbitrary files to any server location. The vulnerability stems from improper input validation and sanitization of filenames, enabling attackers to bypass security controls and potentially achieve full system compromise. This attack highlights the critical importance of immediate patching for publicly disclosed vulnerabilities, especially in internet-facing AI development platforms that may contain sensitive code and data.
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Indicators of Compromise
Extracted by AI from the linked source. Not reviewed by an editor. How this works
- cve — CVE-2026-5027
- cve — CVE-2026-0770
- cve — CVE-2026-21445
- cve — CVE-2026-33017
- cve — CVE-2025-3248