{"id":"CVE-2026-101895","revision":"b2423d37964547b1aee845f3362a509f","records":[{"revision":"b2423d37964547b1aee845f3362a509f","observedAt":"2026-10-23T15:48:27.903+00:00","statement":{"source":"cve-program","id":"CVE-2026-101895","aliases":[],"title":"Angular SSR: Denial of Service (DoS) via Infinite Loop on Malformed DOCTYPE","description":"Angular is a development platform for building mobile and desktop web applications using TypeScript/JavaScript and other languages. Prior to 20.3.31, 21.2.23, and 22.1.6, the @angular/platform-server DOM emulation parser can enter an infinite synchronous loop when Angular server-side rendering processes attacker-controlled HTML containing an incomplete DOCTYPE that ends with whitespace at end of input. In Domino lib/HTMLParser.js, after_doctype_name_state emits doctype and EOF tokens without advancing nextchar or leaving the fixed-lookahead state, so the scanner repeatedly handles the same EOF marker. A remote unauthenticated attacker can use this condition through server-side HTML parsing paths such as innerHTML binding to consume a Node.js SSR worker at full CPU, starve the event loop, and stop concurrent and subsequent requests. This issue is fixed in versions 20.3.31, 21.2.23, and 22.1.6.","state":0,"publishedAt":"2026-10-14T15:00:14.385+00:00","modifiedAt":"2026-10-14T17:38:10.017+00:00","affected":[{"ecosystem":"Vendor product","name":"angular","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"angular\",\n                    \"product\": \"angular\",\n                    \"versions\": [\n                        {\n                            \"version\": \"<= 19.2.25\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 20.0.0, < 20.3.31\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 21.0.0, < 21.2.23\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 22.0.0, < 22.1.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"},{"ecosystem":"Vendor product","name":"platform-server","ranges":[],"versions":[],"rawVersionEvidence":"{\n                    \"vendor\": \"@angular/\",\n                    \"product\": \"platform-server\",\n                    \"versions\": [\n                        {\n                            \"version\": \"<= 19.2.25\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 20.0.0, < 20.3.31\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 21.0.0, < 21.2.23\",\n                            \"status\": \"affected\"\n                        },\n                        {\n                            \"version\": \">= 22.0.0, < 22.1.6\",\n                            \"status\": \"affected\"\n                        }\n                    ]\n                }"}],"metrics":[{"system":"CVSS 4.0","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","score":8.7,"severity":"HIGH"}],"references":["https://github.com/angular/angular/security/advisories/GHSA-f67j-2jqw-jpq7","https://github.com/angular/angular/commit/3db26e2544964d07a520836ad01f02f36ec88e25","https://github.com/angular/angular/commit/fc2e8fbc0bda2f5c11585e8a0cbd88c074f5e567","https://github.com/angular/domino/commit/4d97473116d000e3fd4d6f75ec98cbd67576fa6f","https://github.com/angular/angular/releases/tag/v20.3.31","https://github.com/angular/angular/releases/tag/v21.2.23","https://github.com/angular/angular/releases/tag/v22.1.6"],"sourceUrl":"https://www.cve.org/CVERecord?id=CVE-2026-101895","license":"CVE Program Terms of Use","key":"cve-program:CVE-2026-101895","identifiers":["CVE-2026-101895"]},"retained":false,"historicalAffected":[]}],"coverage":[]}