{"action":"Upgrade python to 3.10.21 (3.10.x), 3.11.16 (3.11.x), 3.12.14 (3.12.x), 3.13.15 (3.13.x) or 3.14.7 (3.14.x) or later.","affected":[{"fixed":"3.10.21","introduced":"0"},{"fixed":"3.11.16","introduced":"3.11.0"},{"fixed":"3.12.14","introduced":"3.12.0"},{"fixed":"3.13.15","introduced":"3.13.0"},{"fixed":"3.14.7","introduced":"3.14.0"}],"component":"python","cve_ids":["CVE-2026-18503"],"ecosystem":"python","exploited":false,"fixed_versions":["3.10.21","3.11.16","3.12.14","3.13.15","3.14.7"],"id":"tcs_01M5JTNDXRSNX000EDT6G963VQ","modified_at":"2026-08-12T00:27:53Z","published_at":"2026-08-10T13:45:31Z","references":["https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2026-35.json","https://mail.python.org/archives/list/security-announce@python.org/thread/KQ7NBMCPAZJHRROQXJQE4GMXGLD5KHBS/","https://www.cve.org/CVERecord?id=CVE-2026-18503"],"severity":{"label":"low","score":2.4},"sources":[{"source":"python-runtime","source_id":"PSF-2026-35","url":"https://github.com/psf/advisory-database/blob/main/advisories/python/PSF-2026-35.json"}],"summary":"Super-linear CPU usage for unbounded input to csv.Sniffer.sniff()"}