{"id":"CVE-2025-3248","aliases":["GHSA-rvqx-wpfh-mfx7","PYSEC-2025-36","PYSEC-2026-380"],"url":"https://o3.security/vulnerability/CVE-2025-3248","summary":"Langflow < 1.3.0 Unauthenticated RCE via /api/v1/validate/code","details":"Langflow versions prior to 1.3.0 are susceptible to code injection in \nthe /api/v1/validate/code endpoint. A remote and unauthenticated attacker can send crafted HTTP requests to execute arbitrary\ncode.","published":"2025-04-07T14:22:38.980Z","modified":"2026-08-12T03:51:10.175712057Z","cvss":{"score":9.8,"severity":"CRITICAL","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H"},"epss":{"score":0.99989,"percentile":0.99984,"asOf":"2026-09-10"},"cisaKev":null,"exploitsKnown":10,"affectedPackages":[{"ecosystem":"PyPI","name":"langflow","fixedVersion":"1.3.0"},{"ecosystem":"PyPI","name":"langflow-base","fixedVersion":"0.3.0"}],"fix":{"url":"https://github.com/langflow-ai/langflow/pull/6911","label":"langflow-ai/langflow#6911"},"references":[{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-3248"},{"type":"ADVISORY","url":"https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/3xxx/CVE-2025-3248.json"},{"type":"ADVISORY","url":"https://github.com/langflow-ai/langflow/releases/tag/1.3.0"},{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2025-3248"},{"type":"ADVISORY","url":"https://www.vulncheck.com/advisories/langflow-unauthenticated-rce"},{"type":"REPORT","url":"https://github.com/langflow-ai/langflow/pull/6911"},{"type":"PACKAGE","url":"https://github.com/langflow-ai/langflow"},{"type":"EVIDENCE","url":"https://www.horizon3.ai/attack-research/disclosures/unsafe-at-any-speed-abusing-python-exec-for-unauth-rce-in-langflow-ai/"}],"provenance":{"sources":["OSV.dev","FIRST.org (EPSS)"],"lastVerified":"2026-08-12T03:51:10.175712057Z"}}