{"cve":"CVE-2021-29272","nvd":{"published":"2021-03-27T18:15:13.737","modified":"2026-06-17T03:47:28.930","status":"Modified","description":"bluemonday before 1.0.5 allows XSS because certain Go lowercasing converts an uppercase Cyrillic character, defeating a protection mechanism against the \"script\" string.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N","score":6.1},"cwes":["CWE-79"],"references":["https://github.com/microcosm-cc/bluemonday/releases/tag/v1.0.5","https://vuln.ryotak.me/advisories/4","https://github.com/microcosm-cc/bluemonday/releases/tag/v1.0.5","https://vuln.ryotak.me/advisories/4"],"products":["microco:bluemonday"],"source":"nvd","synced_at":"2026-10-19T21:17:01.373894544+00:00"},"epss":{"cve":"CVE-2021-29272","score":0.00929,"percentile":0.60574,"date":"2026-11-01"},"kev":null,"osv":[{"id":"GHSA-3x58-xr87-2fcj","url":"https://osv.dev/vulnerability/GHSA-3x58-xr87-2fcj","summary":"Cross-site scripting in bluemonday","modified":"2024-05-20T21:19:56Z","packages":[{"ecosystem":"Go","name":"github.com/microcosm-cc/bluemonday","purl":"pkg:golang/github.com/microcosm-cc/bluemonday","ranges":["<1.0.5"],"fixed":["1.0.5"]}]},{"id":"GO-2022-0762","url":"https://osv.dev/vulnerability/GO-2022-0762","summary":"Cross-site scripting due to incorrect sanitization in github.com/microcosm-cc/bluemonday","modified":"2024-05-20T16:03:47Z","packages":[{"ecosystem":"Go","name":"github.com/microcosm-cc/bluemonday","purl":"pkg:golang/github.com/microcosm-cc/bluemonday","ranges":["<1.0.5"],"fixed":["1.0.5"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}