{"apiVersion":"1.0","identifier":"CVE-2026-9769","description":"justhtml through 1.9.1 (fixed in 1.10.0) is vulnerable to uncontrolled recursion leading to denial of service. During JustHTML() construction, TreeBuilder.finish() unconditionally calls _populate_selectedcontent(), which recursively traverses the DOM tree via _find_elements()/_find_element() without a depth bound. An attacker who can supply HTML for parsing can provide deeply nested elements (e.g., ~1000 nested <div> tags, roughly 11 KB) to exceed CPython-s default recursion limit and trigger an unhandled RecursionError, which may abort parsing, fail requests, or terminate a worker/process depending on the host application-s exception handling.","publishedAt":"2026-08-23T14:16:55","lastModifiedAt":"2026-08-26T17:10:53","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-9769","cvssScore":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","epssProbability":0.00278,"riskScore":0.77,"affectedProduct":"justhtml","affectedVersions":"<=1.9.1","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-9769","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-9769","en":"https://www.redsauce.net/en/cves/CVE-2026-9769","fr":"https://www.redsauce.net/fr/cves/CVE-2026-9769","pt":"https://www.redsauce.net/pt/cves/CVE-2026-9769","de":"https://www.redsauce.net/de/cves/CVE-2026-9769","sk":"https://www.redsauce.net/sk/cves/CVE-2026-9769","el":"https://www.redsauce.net/el/cves/CVE-2026-9769"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-9769"}}