{"answers":{"affected":"4 open source packages ship an affected version, including pillow and Pillow. It affects 1 product.","exploited":"There is no known exploitation of CVE-2026-96639 in the wild and no public exploit code.","fix":"Upgrade pillow to 13.0.0 or later.","what":"CVE-2026-96639 is a critical vulnerability in Python Pillow, published on 21 Oct 2026."},"fix_prompt":"Check this codebase for CVE-2026-96639 and fix it if it is affected.\n\nWhat it is: CVE-2026-96639 is a critical vulnerability in Python Pillow, published on 21 Oct 2026. \nExploitation: There is no known exploitation of CVE-2026-96639 in the wild and no public exploit code.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected from 11.0.0; fixed in 13.0.0\n- pillow (PyPI): affected from 11.0.0; fixed in 13.0.0\n- pillow (PyPI): affected from 11.0.0; fixed in 13.0.0\n- Pillow (PyPI): affected from 11.0.0; fixed in 13.0.0\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-2026-96639/ (Markdown: https://insights.sbomify.com/CVE-2026-96639/index.md)","id":"CVE-2026-96639","markdown":"https://insights.sbomify.com/CVE-2026-96639/index.md","name":"CVE-2026-96639","record":{"aliases":["BIT-pillow-2026-96639","DEBIAN-CVE-2026-96639","ECHO-68a5-bb35-54de","GHSA-v9pv-5gc8-w2m6","PYSEC-2026-4339","ROOT-APP-PYPI-CVE-2026-96639","UBUNTU-CVE-2026-96639"],"analysis":null,"analysis_generated_by":null,"assigner":"GitHub_M","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":9.8,"severity":"critical","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H","version":"3.1"},"cwes":[{"id":"CWE-787","name":"Out-of-bounds Write"},{"id":"CWE-125","name":"Out-of-bounds Read"}],"description":"Pillow is a Python imaging library. From 11.0.0 until 13.0.0, multi-frame loaders can retain an ImagingCore allocation created for a narrow frame mode while a later frame of the same dimensions changes the logical mode and decoder tiles to wider RGB or CMYK data. ImageFile.load_prepare() reuses the stale native storage because _im is non-null without verifying that its mode and size still match. Crafted PSD, MPO, DCX, or MIC frame transitions can then write wider pixels into the narrow allocation, causing native out-of-bounds writes and crashes. The MPO path can also cause a native over-read and, in demonstrated runtime-specific profiles, command execution. This issue is fixed in version 13.0.0.","ecosystems":["Bitnami","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":"Pillow multi-frame loaders can reuse stale native image storage after mode transitions","id":"CVE-2026-96639","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":null,"year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Pillow PDF append accepts malformed shared page-tree DAG causing resource exhaustion","id":"CVE-2026-96640"},"packages":[{"ecosystem":"Bitnami","fixed":["13.0.0"],"introduced":["11.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2026-96639"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["11.0.0"],"last_affected":[],"package":"Pillow","purl":null,"source":"GHSA-v9pv-5gc8-w2m6"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["11.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-v9pv-5gc8-w2m6"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["11.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2026-4339"}],"prev":{"headline":"Pillow: BMP RLE decoder memory-amplification DoS via unbounded delta escape / absolute mode","id":"CVE-2026-96638"},"products":["Pillow"],"published":"2026-10-21","related":[{"cvss_score":10,"headline":"Pillow command injection","id":"CVE-2014-3007","kev_date_added":null,"published":"2014-04-27"},{"cvss_score":9.8,"headline":"Buffer over-flow in Pillow","id":"CVE-2022-30595","kev_date_added":null,"published":"2022-05-25"},{"cvss_score":9.8,"headline":"Out of bounds write in Pillow","id":"CVE-2021-25289","kev_date_added":null,"published":"2021-03-19"},{"cvss_score":9.8,"headline":"Pillow Integer overflow in ImagingResampleHorizontal","id":"CVE-2016-4009","kev_date_added":null,"published":"2016-04-13"},{"cvss_score":9.2,"headline":"Pillow: Heap buffer overflow in _tiffWriteProc when saving TIFF to BytesIO","id":"CVE-2026-112393","kev_date_added":null,"published":"2026-10-19"},{"cvss_score":9.2,"headline":"Pillow: Heap buffer overflow in FlashPix (FPX) JPEG decoding leads to code execution","id":"CVE-2026-112398","kev_date_added":null,"published":"2026-10-19"}],"sources":[{"class":"attribution","licence":"Apache-2.0","name":"Bitnami","prefix":"BIT"},{"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":"US public information, NVD API terms","name":"NVD"},{"class":"attribution","licence":"CWE Terms of Use","name":"CWE (MITRE)"},{"class":"attribution","licence":"FIRST CVSS licence","name":"CVSS (FIRST)"}],"ssvc":{"automatable":"yes","exploitation":"none","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-29","vendors":["python-pillow"]},"summary":null,"url":"https://insights.sbomify.com/CVE-2026-96639/"}