{"id":"CVE-2026-120235","title":"ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption","summary":"A security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads…","severity":"medium","cvss":4.3,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:O/RC:C","cvssSource":"cna","cwe":["CWE-400","CWE-404"],"vendor":"ag-ui-protocol","product":"ag-ui","affected":["ag-ui 0.0.1","ag-ui 0.0.2","ag-ui 0.0.3","ag-ui 0.0.4","ag-ui 0.0.5","ag-ui 0.0.6","ag-ui 0.0.7","ag-ui 0.0.8","ag-ui 0.0.9","ag-ui 0.0.10","ag-ui 0.0.11","ag-ui 0.0.12","ag-ui 0.0.13","ag-ui 0.0.14","ag-ui 0.0.15","ag-ui 0.0.16","ag-ui 0.0.17","ag-ui 0.0.18","ag-ui 0.0.19","ag-ui 0.0.20","ag-ui 0.0.21","ag-ui 0.0.22","ag-ui 0.0.23","ag-ui 0.0.24","ag-ui 0.0.25","ag-ui 0.0.26","ag-ui 0.0.27","ag-ui 0.0.28","ag-ui 0.0.29","ag-ui 0.0.30","ag-ui 0.0.31","ag-ui 0.0.32","ag-ui 0.0.33","ag-ui 0.0.34","ag-ui 0.0.35","ag-ui 0.0.36","ag-ui 0.0.37","ag-ui 0.0.38","ag-ui 0.0.39","ag-ui 0.0.40","ag-ui 0.0.41","ag-ui 0.0.42","ag-ui 0.0.43","ag-ui 0.0.44","ag-ui 0.0.45","ag-ui 0.0.46","ag-ui 0.0.47","ag-ui 0.0.48","ag-ui 0.0.49","ag-ui 0.0.50"],"ssvc":{"exploitation":"poc","automatable":"no","technicalImpact":"partial","timestamp":"2026-11-02T17:15:20.466792Z"},"exploitAvailable":true,"published":"2026-11-01","updated":"2026-11-02","sourceUpdated":"2026-11-02T17:41:44.705Z","source":"CVEORG","sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-120235","references":[{"url":"https://vuldb.com/vuln/429594","label":"VDB-429594 | ag-ui-protocol ag-ui SSE Parser sse.ts parseSSEStream resource consumption"},{"url":"https://vuldb.com/vuln/429594/cti","label":"VDB-429594 | CTI Indicators (IOB, IOC, TTP, IOA)"},{"url":"https://vuldb.com/cve/CVE-2026-120235","label":"CVE-2026-120235 | CVE Analysis and Report"},{"url":"https://vuldb.com/submit/1015147","label":"Submit #1015147 | ag-ui-protocol ag-ui <=0.0.58 CWE-400"},{"url":"https://github.com/ag-ui-protocol/ag-ui/issues/2522"},{"url":"https://github.com/ag-ui-protocol/ag-ui/pull/2627"},{"url":"https://github.com/ag-ui-protocol/ag-ui/commit/9e7b2b00bce215bbf731f1e6094f63812527c432"},{"url":"https://github.com/ag-ui-protocol/ag-ui/releases/tag/release/2026-10-30"},{"url":"https://github.com/ag-ui-protocol/ag-ui/"}],"tags":["cve.org","exploit-available"],"epss":0.00354,"epssPercentile":0.29252,"ingestedAt":"2026-11-05T19:30:42.743Z","slug":"CVE-2026-120235","body":"## Overview\n\nA security vulnerability has been detected in ag-ui-protocol ag-ui up to 0.0.58. Affected is the function parseSSEStream of the file sdks/typescript/packages/client/src/transform/sse.ts of the component SSE Parser. The manipulation leads to resource consumption. The attack may be initiated remotely. The exploit has been disclosed publicly and may be used. The identifier of the patch is 9e7b2b00bce215bbf731f1e6094f63812527c432. The affected component should be upgraded.\n\n## Affected\n\n- `ag-ui 0.0.1`\n- `ag-ui 0.0.2`\n- `ag-ui 0.0.3`\n- `ag-ui 0.0.4`\n- `ag-ui 0.0.5`\n- `ag-ui 0.0.6`\n- `ag-ui 0.0.7`\n- `ag-ui 0.0.8`\n- `ag-ui 0.0.9`\n- `ag-ui 0.0.10`\n- `ag-ui 0.0.11`\n- `ag-ui 0.0.12`\n- `ag-ui 0.0.13`\n- `ag-ui 0.0.14`\n- `ag-ui 0.0.15`\n- `ag-ui 0.0.16`\n- `ag-ui 0.0.17`\n- `ag-ui 0.0.18`\n- `ag-ui 0.0.19`\n- `ag-ui 0.0.20`\n- `ag-ui 0.0.21`\n- `ag-ui 0.0.22`\n- `ag-ui 0.0.23`\n- `ag-ui 0.0.24`\n- `ag-ui 0.0.25`\n- `ag-ui 0.0.26`\n- `ag-ui 0.0.27`\n- `ag-ui 0.0.28`\n- `ag-ui 0.0.29`\n- `ag-ui 0.0.30`\n- `ag-ui 0.0.31`\n- `ag-ui 0.0.32`\n- `ag-ui 0.0.33`\n- `ag-ui 0.0.34`\n- `ag-ui 0.0.35`\n- `ag-ui 0.0.36`\n- `ag-ui 0.0.37`\n- `ag-ui 0.0.38`\n- `ag-ui 0.0.39`\n- `ag-ui 0.0.40`\n- `ag-ui 0.0.41`\n- `ag-ui 0.0.42`\n- `ag-ui 0.0.43`\n- `ag-ui 0.0.44`\n- `ag-ui 0.0.45`\n- `ag-ui 0.0.46`\n- `ag-ui 0.0.47`\n- `ag-ui 0.0.48`\n- `ag-ui 0.0.49`\n- `ag-ui 0.0.50`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":36,"depthScoreParts":{"impact":23.7,"likelihood":0.1,"exploitation":12,"ransomware":0},"changes":[]}