{"action":"Upgrade httplib2 to 0.19.0 or later.","affected":[{"fixed":"0.19.0","introduced":"0"}],"component":"httplib2","cve_ids":["CVE-2021-21240"],"ecosystem":"PyPI","epss":0.0367,"exploited":false,"fixed_versions":["0.19.0"],"ghsa_id":"GHSA-93xj-8mrv-444m","id":"tcs_01M5KF9NWJKKC1CG1PDZDR55NC","modified_at":"2026-09-10T03:49:14.200521093Z","published_at":"2021-02-08T19:41:59Z","references":["https://osv.dev/vulnerability/GHSA-93xj-8mrv-444m","https://github.com/httplib2/httplib2/security/advisories/GHSA-93xj-8mrv-444m","https://nvd.nist.gov/vuln/detail/CVE-2021-21240","https://github.com/httplib2/httplib2/pull/182","https://github.com/httplib2/httplib2/commit/bd9ee252c8f099608019709e22c0d705e98d26bc","https://github.com/httplib2/httplib2","https://github.com/pypa/advisory-database/tree/main/vulns/httplib2/PYSEC-2021-16.yaml","https://pypi.org/project/httplib2"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-93xj-8mrv-444m","url":"https://osv.dev/vulnerability/GHSA-93xj-8mrv-444m"}],"summary":"Regular Expression Denial of Service (REDoS) in httplib2"}