{"id":"CVE-2021-45848","aliases":["GHSA-p4v2-r99v-wjc2","PYSEC-2026-687"],"title":"Nicotine+ DoS on Null Character in Download Request","summary":"Nicotine+ DoS on Null Character in Download Request","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"nicotine-plus","product":"nicotine-plus","ecosystem":"pip","affected":["nicotine-plus >= 3.0.3, < 3.2.1"],"patched":["nicotine-plus 3.2.1"],"published":"2022-03-16","updated":"2026-07-06","source":"OSV","sourceUrl":"https://osv.dev/vulnerability/GHSA-p4v2-r99v-wjc2","references":[{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-45848"},{"url":"https://github.com/nicotine-plus/nicotine-plus/issues/1777"},{"url":"https://github.com/nicotine-plus/nicotine-plus/commit/0e3e2fac27a518f0a84330f1ddf1193424522045"},{"url":"https://github.com/nicotine-plus/nicotine-plus"},{"url":"https://lists.fedoraproject.org/archives/list/package-announce@lists.fedoraproject.org/message/HWYV53KERFH2EC4XI2IVVQFTV75E5XM6"},{"url":"https://security.gentoo.org/glsa/202210-20"}],"tags":["osv","pip"],"epss":0.01624,"epssPercentile":0.75072,"ingestedAt":"2026-07-08T18:25:51.516Z","slug":"CVE-2021-45848","body":"## Overview\n\nDenial of service (DoS) vulnerability in Nicotine+ starting with version 3.0.3 and prior to version 3.2.1 allows a user with a modified Soulseek client to crash Nicotine+ by sending a file download request with a file path containing a null character.\n\n## Affected packages\n\n- `nicotine-plus >= 3.0.3, < 3.2.1`\n\n## Remediation\n\nUpgrade to a patched release:\n\n- `nicotine-plus 3.2.1`","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.3,"exploitation":0,"ransomware":0},"changes":[]}