{"cve":{"cve_id":"CVE-2025-68664","is_kev":false,"kev_date_added":null,"kev_vendor_project":null,"kev_product":null,"kev_vulnerability_name":null,"kev_short_description":null,"kev_required_action":null,"kev_due_date":null,"kev_known_ransomware":null,"kev_notes":null,"kev_cwes":null,"epss_score":0.1383,"epss_percentile":0.96034,"epss_as_of":"2026-06-23","description":"LangChain is a framework for building agents and LLM-powered applications. Prior to versions 0.3.81 and 1.2.5, a serialization injection vulnerability exists in LangChain's dumps() and dumpd() functions. The functions do not escape dictionaries with 'lc' keys when serializing free-form dictionaries. The 'lc' key is used internally by LangChain to mark serialized objects. When user-controlled data contains this key structure, it is treated as a legitimate LangChain object during deserialization rather than plain user data. This issue has been patched in versions 0.3.81 and 1.2.5.","published_at":"2025-12-23T22:47:44.084000Z","last_modified_at":null,"cvss_v3_score":9.3,"cvss_v3_vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N","cvss_v3_severity":"CRITICAL","cvss_v4_score":null,"cvss_v4_vector":null,"cvss_v4_severity":null,"ssvc_decision":null,"ssvc_exploitation":null,"ssvc_automatable":null,"ssvc_technical_impact":null,"cwes":["CWE-502"],"nvd_references":["https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm","https://github.com/langchain-ai/langchain/pull/34455","https://github.com/langchain-ai/langchain/pull/34458","https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8","https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81","https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5"],"vuln_status":null,"trending_score":null,"is_trending":false,"has_trended":false,"trended_number_one":false,"trending_peak_score":null,"trending_peak_rank":null,"started_trending_at":null,"trended_number_one_at":null,"summary_generated":null,"summary_generated_at":null,"summary_model":null,"created_at":"2026-06-24T00:09:39.878444Z","updated_at":"2026-06-28T23:28:22.261638Z"},"effective_severity":"CRITICAL","badges":[],"impact_analysis":[],"cvss_v3_decoded":{"version":"3.1","metrics":[{"metric":"AV","name":"Attack Vector","value":"N","value_label":"Network"},{"metric":"AC","name":"Attack Complexity","value":"L","value_label":"Low"},{"metric":"PR","name":"Privileges Required","value":"N","value_label":"None"},{"metric":"UI","name":"User Interaction","value":"N","value_label":"None"},{"metric":"S","name":"Scope","value":"C","value_label":"Changed"},{"metric":"C","name":"Confidentiality","value":"H","value_label":"High"},{"metric":"I","name":"Integrity","value":"L","value_label":"Low"},{"metric":"A","name":"Availability","value":"N","value_label":"None"}]},"cvss_v4_decoded":{"version":null,"metrics":[]},"affected":[{"vendor_slug":"langchain-ai","vendor_name":"langchain-ai","product_slug":"langchain","product_name":"langchain","version_start":">= 1.0.0, < 1.2.5","version_start_inclusive":true,"version_end":">= 1.0.0, < 1.2.5","version_end_inclusive":true,"cpe23_uri":"cve5:langchain-ai:langchain:>= 1.0.0, < 1.2.5:>= 1.0.0, < 1.2.5"},{"vendor_slug":"langchain-ai","vendor_name":"langchain-ai","product_slug":"langchain","product_name":"langchain","version_start":"< 0.3.81","version_start_inclusive":true,"version_end":"< 0.3.81","version_end_inclusive":true,"cpe23_uri":"cve5:langchain-ai:langchain:< 0.3.81:< 0.3.81"}],"exploit_refs":[],"news":[],"references":[{"url":"https://github.com/langchain-ai/langchain/security/advisories/GHSA-c67j-w6g6-q2cm","source_type":"VENDOR_ADVISORY","tags":["advisory"]},{"url":"https://github.com/langchain-ai/langchain/pull/34455","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langchain-ai/langchain/pull/34458","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langchain-ai/langchain/commit/5ec0fa69de31bbe3d76e4cf9cd65a6accb8466c8","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langchain-ai/langchain/commit/d9ec4c5cc78960abd37da79b0250f5642e6f0ce6","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D0.3.81","source_type":"PATCH","tags":["patch"]},{"url":"https://github.com/langchain-ai/langchain/releases/tag/langchain-core%3D%3D1.2.5","source_type":"PATCH","tags":["patch"]}],"timeline":[{"type":"published","at":"2025-12-23T22:47:44.084000Z","label":"CVE published","source":null},{"type":"cvss_changed","at":"2026-06-28T17:49:19.898422Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:49:19.898422Z","label":"CVSS score revised","source":"cvelistv5"},{"type":"cvss_changed","at":"2026-06-28T17:49:19.898422Z","label":"CVSS score revised","source":"cvelistv5"}]}