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Attackers are exploiting CVE-2026-5027, a path traversal bug in Langflow’s file upload API, to write arbitrary files on exposed servers without authentication. The flaw, caused by unsanitized filenames, was patched in langflow-base 0.8.3 and Langflow 1.9.0 (upgrade to 1.10.0).
langflow
+ path-traversal
+ vulnerability
+ exploit
security-patch
+ tldr-a-byte-sized-daily-tech-newsletter