{"action":"Upgrade webob to 1.8.11 or later.","affected":[{"fixed":"1.8.11","introduced":"0"}],"component":"webob","cve_ids":["CVE-2026-54770"],"ecosystem":"PyPI","epss":0.00421,"exploited":false,"fixed_versions":["1.8.11"],"ghsa_id":"GHSA-6hx8-3wjj-gr8g","id":"tcs_01M5KH8R6745T89HPR2DBG97DQ","modified_at":"2026-09-10T12:15:13.320787314Z","published_at":"2026-09-10T09:44:57.798668Z","references":["https://osv.dev/vulnerability/PYSEC-2026-3943","https://github.com/Pylons/webob/security/advisories/GHSA-6hx8-3wjj-gr8g","https://nvd.nist.gov/vuln/detail/CVE-2026-54770","https://github.com/Pylons/webob/commit/ff89560643fb252751b4db8806a283b5377f1f07","https://github.com/Pylons/webob","https://github.com/Pylons/webob/tree/1.8.11","https://pypi.org/project/webob","https://github.com/advisories/GHSA-6hx8-3wjj-gr8g"],"severity":{"label":"medium","score":6.1},"sources":[{"source":"osv","source_id":"PYSEC-2026-3943","url":"https://osv.dev/vulnerability/PYSEC-2026-3943"}],"summary":"WebOb: Open redirect in Location header normalization via leading C0 control / space characters"}