{"attribution":"This product uses data from the NVD API but is not endorsed or certified by the NVD.","cve":{"id":"CVE-2023-36632","sourceIdentifier":"cve@mitre.org","published":"2023-06-25T18:15:09.313","lastModified":"2026-06-17T06:06:42.710","vulnStatus":"Modified","cveTags":[{"sourceIdentifier":"cve@mitre.org","tags":["disputed"]}],"descriptions":[{"lang":"en","value":"The legacy email.utils.parseaddr function in Python through 3.11.4 allows attackers to trigger \"RecursionError: maximum recursion depth exceeded while calling a Python object\" via a crafted argument. This argument is plausibly an untrusted value from an application's input data that was supposed to contain a name and an e-mail address. NOTE: email.utils.parseaddr is categorized as a Legacy API in the documentation of the Python email package. Applications should instead use the email.parser.BytesParser or email.parser.Parser class. NOTE: the vendor's perspective is that this is neither a vulnerability nor a bug. The email package is intended to have size limits and to throw an exception when limits are exceeded; they were exceeded by the example demonstration code."}],"affected":[{"source":"cve@mitre.org","affectedData":[{"vendor":"n/a","product":"n/a","versions":[{"version":"n/a","status":"affected"}]}]}],"metrics":{"cvssMetricV31":[{"source":"nvd@nist.gov","type":"Primary","cvssData":{"version":"3.1","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","baseScore":7.5,"baseSeverity":"HIGH","attackVector":"NETWORK","attackComplexity":"LOW","privilegesRequired":"NONE","userInteraction":"NONE","scope":"UNCHANGED","confidentialityImpact":"NONE","integrityImpact":"NONE","availabilityImpact":"HIGH"},"exploitabilityScore":3.9,"impactScore":3.6}],"ssvcV203":[{"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0","ssvcData":{"timestamp":"2024-11-27T19:46:39.851683Z","id":"CVE-2023-36632","options":[{"exploitation":"poc"},{"automatable":"yes"},{"technicalImpact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}]},"weaknesses":[{"source":"nvd@nist.gov","type":"Primary","description":[{"lang":"en","value":"CWE-674"}]}],"configurations":[{"nodes":[{"operator":"OR","negate":false,"cpeMatch":[{"vulnerable":true,"criteria":"cpe:2.3:a:python:python:*:*:*:*:*:*:*:*","versionEndIncluding":"3.11.4","matchCriteriaId":"FBFABA38-746A-451D-A9DB-8AF31A4AE9B3"}]}]}],"references":[{"url":"https://docs.python.org/3/library/email.html","source":"cve@mitre.org","tags":["Product"]},{"url":"https://docs.python.org/3/library/email.utils.html","source":"cve@mitre.org","tags":["Product"]},{"url":"https://github.com/Daybreak2019/PoC_python3.9_Vul/blob/main/RecursionError-email.utils.parseaddr.py","source":"cve@mitre.org","tags":["Product"]},{"url":"https://github.com/python/cpython/issues/103800","source":"cve@mitre.org","tags":["Exploit","Issue Tracking"]},{"url":"https://docs.python.org/3/library/email.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]},{"url":"https://docs.python.org/3/library/email.utils.html","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]},{"url":"https://github.com/Daybreak2019/PoC_python3.9_Vul/blob/main/RecursionError-email.utils.parseaddr.py","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Product"]},{"url":"https://github.com/python/cpython/issues/103800","source":"af854a3a-2127-422b-91ae-364da2661108","tags":["Exploit","Issue Tracking"]}]}}