{"vulnerability": "CVE-2021-29921", "sightings": [{"uuid": "2cdef152-5ef9-4dfa-9422-94ab88246438", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-29921", "type": "seen", "source": "https://www.cert.ssi.gouv.fr/avis/CERTFR-2026-AVI-0395/", "content": "", "creation_timestamp": "2026-04-02T17:00:00.000000Z"}, {"uuid": "a1efeda4-2c08-4f5e-af62-5dceb17dff4e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-29921", "type": "seen", "source": "https://t.me/cKure/5112", "content": "\u25a0\u25a0\u25a0\u25a0\u25a0 Python also impacted by critical IP address validation vulnerability. CVE-2021-29921\n\nhttps://www.bleepingcomputer.com/news/security/python-also-impacted-by-critical-ip-address-validation-vulnerability/", "creation_timestamp": "2021-05-01T13:45:49.000000Z"}, {"uuid": "00b45a46-6670-4923-a661-f4f96a782a2e", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-29921", "type": "seen", "source": "https://t.me/BleepingComputer/9649", "content": "Python also impacted by critical IP address validation vulnerability\n\nPython 3.3 standard library 'ipaddress' suffers from a critical IP address vulnerability (CVE-2021-29921) identical to the flaw that was reported in the \"netmask\" library earlier this year. [...]\n\nhttps://www.bleepingcomputer.com/news/security/python-also-impacted-by-critical-ip-address-validation-vulnerability/", "creation_timestamp": "2021-05-01T14:16:07.000000Z"}, {"uuid": "c9eafff8-57d5-4803-8ef2-9ef48082ab75", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-29921", "type": "published-proof-of-concept", "source": "https://t.me/pwnwiki_zhchannel/284", "content": "CVE-2021-29921  python3.8.0-v3.10 SSRF&RFI\u6f0f\u6d1e\nhttps://www.pwnwiki.org/index.php?title=CVE-2021-29921_python3.8.0-v3.10_SSRF%26RFI%E6%BC%8F%E6%B4%9E", "creation_timestamp": "2021-05-01T03:03:16.000000Z"}, {"uuid": "375cd9ad-7b3c-4bf9-b7aa-003b6624cb08", "vulnerability_lookup_origin": "1a89b78e-f703-45f3-bb86-59eb712668bd", "author": "2a075640-a300-48a4-bb44-bc6130783b9b", "vulnerability": "CVE-2021-29921", "type": "published-proof-of-concept", "source": "https://t.me/CyberSecurityTechnologies/3262", "content": "CVE-2021-29921 - python stdlib \"ipaddress\" - Improper Input Validation of octal literals in python 3.8.0 thru v3.10 results in indeterminate SSRF/RFI vulnerabilities. - \"ipaddress leading zeros in IPv4 address\" (PoC)\nhttps://sick.codes/sick-2021-014", "creation_timestamp": "2021-05-01T12:41:31.000000Z"}]}