{"answers":{"affected":"3 open source packages ship an affected version, including pyzipper.","exploited":"There is no known exploitation of CVE-2026-44722 in the wild and no public exploit code.","fix":"Upgrade pyzipper to 0.4.0 or later.","what":"CVE-2026-44722 is a medium-severity vulnerability in danifus pyzipper, published on 17 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-44722 and fix it if it is affected.\n\nWhat it is: CVE-2026-44722 is a medium-severity vulnerability in danifus pyzipper, published on 17 Jul 2026. It can only be exploited from the same machine or local network, with no action from the victim.\nExploitation: There is no known exploitation of CVE-2026-44722 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pyzipper (PyPI): affected all versions; fixed in 0.4.0\n- pyzipper (PyPI): affected all versions; fixed in 0.4.0\n- pyzipper (PyPI): affected all versions; fixed in 0.4.0\n\nTask:\n1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.\n2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.\n3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.\n4. Run the tests and summarise what changed and why.\n5. If nothing in the project is affected, say so and change nothing.\n\nReference: https://insights.sbomify.com/CVE-2026-44722/ (Markdown: https://insights.sbomify.com/CVE-2026-44722/index.md)","id":"CVE-2026-44722","markdown":"https://insights.sbomify.com/CVE-2026-44722/index.md","name":"CVE-2026-44722","record":{"aliases":["DEBIAN-CVE-2026-44722","GHSA-crqm-m339-7m2p","PYSEC-2026-3044","UBUNTU-CVE-2026-44722"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python zip library","requires_auth":"none","summary":"An operator precedence bug in pyzipper caused AES-encrypted files to use a weaker format, exposing CRC32 checksums that allow attackers to brute-force plaintext for small files.","user_interaction":"not_required","vuln_class":"weak_cryptography"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[],"cvss":{"score":6.2,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N","version":"3.1"},"cwes":[{"id":"CWE-480","name":"Use of Incorrect Operator"}],"description":"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.","ecosystems":["PyPI"],"exploits":{"exploitdb":0,"first_seen":null,"github_poc":0,"max_poc_stars":null,"metasploit":0,"nuclei":0,"refs":[],"tier":"none_known"},"has_fix":true,"headline":"pyzipper: Encryption bypass for small files encrypted with pyzipper","id":"CVE-2026-44722","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"PyPI","product":null,"products":[],"type":"weak_cryptography","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Command injection in vowpal wabbit","id":"CVE-2026-44723"},"packages":[{"ecosystem":"PyPI","fixed":["0.4.0"],"introduced":["0"],"last_affected":[],"package":"pyzipper","purl":null,"source":"GHSA-crqm-m339-7m2p"},{"ecosystem":"PyPI","fixed":["0.4.0"],"introduced":["0"],"last_affected":[],"package":"pyzipper","purl":"pkg:pypi/pyzipper","source":"GHSA-crqm-m339-7m2p"},{"ecosystem":"PyPI","fixed":["0.4.0"],"introduced":["0"],"last_affected":[],"package":"pyzipper","purl":"pkg:pypi/pyzipper","source":"PYSEC-2026-3044"}],"prev":{"headline":"Open WebUI: Stored XSS via Model Description","id":"CVE-2026-44721"},"products":["pyzipper"],"published":"2026-07-17","related":[],"sources":[{"class":"attribution","licence":"CVE Terms of Use (MITRE)","name":"CVE List","prefix":"CVE"},{"class":"attribution","licence":"CC BY 4.0","name":"GitHub Advisory Database","prefix":"GHSA"},{"class":"attribution","licence":"CC BY 4.0","name":"PyPA Advisory Database","prefix":"PYSEC"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"no","exploitation":"none","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-17","vendors":["danifus"]},"summary":"An operator precedence bug in pyzipper caused AES-encrypted files to use a weaker format, exposing CRC32 checksums that allow attackers to brute-force plaintext for small files.","url":"https://insights.sbomify.com/CVE-2026-44722/"}