{"apiVersion":"1.0","identifier":"CVE-2026-75628","description":"Punk::OAuth2 versions before 0.03 for Perl allow an attacker-chosen off-site redirect after login because same_origin_path accepts a backslash or tab in the return parameter. oauth2_login reads the return parameter from the initiation request, runs same_origin_path over it, and stores the survivor in the session flow record as the post-login redirect target. That check rejects a value that does not begin with a slash, one with a slash as its second byte, and one containing CR or LF. A backslash and a tab pass. The URL Standard treats a backslash as equivalent to a slash for special schemes, so `/\\evil.example` parses with the authority `evil.example`. It also strips ASCII tab before parsing, so a tab between two leading slashes leaves `//evil.example`. A crafted link to the application-s own login route lands the victim on the attacker-s site after a genuine authentication. The redirect carries no authorization code or access token.","publishedAt":"2026-08-20T01:16:53","lastModifiedAt":"2026-08-28T16:18:25","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2026-75628","cvssScore":5.7,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N","epssProbability":0.0028,"riskScore":0.58,"affectedProduct":"Punk::OAuth2","affectedVersions":"<0.03","vulnerabilityType":"Library","operatingSystems":[],"links":{"self":"https://www.redsauce.net/api/cves/CVE-2026-75628","webPages":{"es":"https://www.redsauce.net/es/cves/CVE-2026-75628","en":"https://www.redsauce.net/en/cves/CVE-2026-75628","fr":"https://www.redsauce.net/fr/cves/CVE-2026-75628","pt":"https://www.redsauce.net/pt/cves/CVE-2026-75628","de":"https://www.redsauce.net/de/cves/CVE-2026-75628","sk":"https://www.redsauce.net/sk/cves/CVE-2026-75628","el":"https://www.redsauce.net/el/cves/CVE-2026-75628"},"source":"https://nvd.nist.gov/vuln/detail/CVE-2026-75628"}}