{"action":"Upgrade chainlit to 2.12.0 or later.","affected":[{"fixed":"2.12.0","introduced":"2.4.0rc0"}],"component":"chainlit","cve_ids":["CVE-2026-120492","CVE-2026-45019"],"ecosystem":"PyPI","epss":0.00221,"exploited":false,"fixed_versions":["2.12.0"],"ghsa_id":"GHSA-hvfh-5mj3-5f3j","id":"tcs_01M5KH7XP0JBM7YJPJDJ2XNYPN","modified_at":"2026-11-03T02:55:55.261817313Z","published_at":"2026-09-10T09:44:56.911091Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3811","https://github.com/Chainlit/chainlit/security/advisories/GHSA-hvfh-5mj3-5f3j","https://github.com/Chainlit/chainlit/commit/0565fd0eccb915fce159929598b053ed79f6e0c9","https://github.com/Chainlit/chainlit","https://github.com/Chainlit/chainlit/blob/2.12.0/docs/security-advisory-2026-mcp.md#spl-2026-002--ssrf-via-mcp-streamable-http--sse","https://github.com/Chainlit/chainlit/releases/tag/2.12.0","https://pypi.org/project/chainlit","https://github.com/advisories/GHSA-hvfh-5mj3-5f3j","https://nvd.nist.gov/vuln/detail/CVE-2026-45019"],"severity":{"label":"high","score":7.2},"sources":[{"source":"osv","source_id":"PYSEC-2026-3811","url":"https://osv.dev/vulnerability/PYSEC-2026-3811"}],"summary":"Chainlist has SSRF via MCP SSE and streamable-http transports that allows unauthenticated internal network access"}