{"dataType":"CVE_RECORD","dataVersion":"5.2","cveMetadata":{"cveId":"CVE-2026-44722","assignerOrgId":"a0819718-46f1-4df5-94e2-005712e83aaa","state":"PUBLISHED","assignerShortName":"GitHub_M","dateReserved":"2026-05-07T18:04:17.308Z","datePublished":"2026-07-17T16:42:01.472Z","dateUpdated":"2026-07-17T17:25:08.270Z"},"containers":{"cna":{"title":"pyzipper: Encryption bypass for small files encrypted with pyzipper","problemTypes":[{"descriptions":[{"cweId":"CWE-480","lang":"en","description":"CWE-480: Use of Incorrect Operator","type":"CWE"}]}],"metrics":[{"cvssV3_1":{"attackComplexity":"LOW","attackVector":"LOCAL","availabilityImpact":"NONE","baseScore":6.2,"baseSeverity":"MEDIUM","confidentialityImpact":"HIGH","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"}}],"references":[{"name":"https://github.com/danifus/pyzipper/security/advisories/GHSA-crqm-m339-7m2p","tags":["x_refsource_CONFIRM"],"url":"https://github.com/danifus/pyzipper/security/advisories/GHSA-crqm-m339-7m2p"},{"name":"https://github.com/danifus/pyzipper/commit/93ce88e7dfd1635443197dab3fb8d477cff579ae","tags":["x_refsource_MISC"],"url":"https://github.com/danifus/pyzipper/commit/93ce88e7dfd1635443197dab3fb8d477cff579ae"},{"name":"https://github.com/danifus/pyzipper/releases/tag/v0.4.0","tags":["x_refsource_MISC"],"url":"https://github.com/danifus/pyzipper/releases/tag/v0.4.0"}],"affected":[{"vendor":"danifus","product":"pyzipper","versions":[{"version":"< 0.4.0","status":"affected"}]}],"providerMetadata":{"orgId":"a0819718-46f1-4df5-94e2-005712e83aaa","shortName":"GitHub_M","dateUpdated":"2026-07-17T16:42:01.472Z"},"descriptions":[{"lang":"en","value":"pyzipper is a replacement for Python's zipfile that can read and write AES encrypted zip files. Prior to 0.4.0, a Python operator precedence bug in pyzipper/zipfile_aes.py caused the AE-2 format to never be automatically selected during encryption, causing encrypted entries to be written in AE-1 format and exposing the plaintext CRC32 checksum in the ZIP header and, for unseekable zip archives, in the datadescripter section, allowing an attacker who possesses the archive to brute-force candidate plaintexts for small or low-entropy files by comparing CRC32 values. This issue is fixed in version 0.4.0."}],"source":{"advisory":"GHSA-crqm-m339-7m2p","discovery":"UNKNOWN"}},"adp":[{"metrics":[{"other":{"type":"ssvc","content":{"timestamp":"2026-07-17T17:25:00.965188Z","id":"CVE-2026-44722","options":[{"Exploitation":"none"},{"Automatable":"no"},{"Technical Impact":"partial"}],"role":"CISA Coordinator","version":"2.0.3"}}}],"title":"CISA ADP Vulnrichment","providerMetadata":{"orgId":"134c704f-9b21-4f2e-91b3-4a467353bcc0","shortName":"CISA-ADP","dateUpdated":"2026-07-17T17:25:08.270Z"}}]}}