{"answers":{"affected":"4 open source packages ship an affected version, including pillow and Pillow. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112403 exists.","fix":"Upgrade pillow to 13.0.0 or later.","what":"CVE-2026-112403 is a critical memory corruption vulnerability in Python Pillow, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim."},"fix_prompt":"Check this codebase for CVE-2026-112403 and fix it if it is affected.\n\nWhat it is: CVE-2026-112403 is a critical memory corruption vulnerability in Python Pillow, published on 19 Oct 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-112403 exists.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected all versions; fixed in 13.0.0\n- pillow (PyPI): affected all versions; fixed in 13.0.0\n- pillow (PyPI): affected all versions; fixed in 13.0.0\n- Pillow (PyPI): affected all versions; 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-2026-112403/ (Markdown: https://insights.sbomify.com/CVE-2026-112403/index.md)","id":"CVE-2026-112403","markdown":"https://insights.sbomify.com/CVE-2026-112403/index.md","name":"CVE-2026-112403","record":{"aliases":["BIT-pillow-2026-112403","DEBIAN-CVE-2026-112403","ECHO-7dc8-65d8-fff5","GHSA-8g5g-8vmr-9782","PYSEC-2026-4332","ROOT-APP-PYPI-CVE-2026-112403","UBUNTU-CVE-2026-112403"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution","denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python imaging library","requires_auth":"none","summary":"Heap buffer overflow in Pillow's JPEG decoder allows attackers to corrupt memory, crash the process, or execute code via crafted images.","user_interaction":"not_required","vuln_class":"memory_corruption"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":9.2,"severity":"critical","source":"cna","vector":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-122","name":"Heap-based Buffer Overflow"}],"description":"Pillow is a Python imaging library. Prior to 13.0.0, Pillow's JPEG decoder can write a full-width scanline into a buffer sized for a requested draft scale. ImagingJpegDecode does not verify libjpeg's actual output width and component count after scaling is requested, and an 8-bit lossless SOF3 JPEG decoded by a build linked to libjpeg-turbo 3.x can ignore the requested downscaling geometry. An attacker can supply such a JPEG to an application that uses draft() or thumbnail() to request downscaling. This can corrupt heap memory, crash the process, or potentially allow code execution. Older libjpeg-turbo 2.x and IJG builds reject the SOF3 input. This issue is fixed in version 13.0.0.","ecosystems":["Bitnami","PyPI"],"exploits":{"exploitdb":0,"first_seen":"2026-10-23","github_poc":1,"max_poc_stars":0,"metasploit":0,"nuclei":0,"refs":[{"date":"2026-10-23T09:49:47Z","kind":"github_poc","ref":"https://github.com/al4n4n/CVE-2026-112403","stars":0,"title":"CVE-2026-112403: Pillow heap buffer overflow in ImagingJpegDecode via lossless JPEG thumbnail. One POST, 100% crash rate."}],"tier":"weaponised"},"has_fix":true,"headline":"Pillow: Heap buffer overflow in ImagingJpegDecode","id":"CVE-2026-112403","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":"memory_corruption","year":"2026"},"n_packages":4,"n_references":3,"next":{"headline":"Pillow: OOB read in TiffDecode.c tile and RGBA paths leaks heap memory into pixels","id":"CVE-2026-112404"},"packages":[{"ecosystem":"Bitnami","fixed":["13.0.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2026-112403"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["0"],"last_affected":[],"package":"Pillow","purl":null,"source":"GHSA-8g5g-8vmr-9782"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-8g5g-8vmr-9782"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2026-4332"}],"prev":{"headline":"Pillow: Double free in ImagingScaleAffine on calloc failure via Image.transform","id":"CVE-2026-112402"},"products":["Pillow"],"published":"2026-10-19","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":"Pillow multi-frame loaders can reuse stale native image storage after mode transitions","id":"CVE-2026-96639","kev_date_added":null,"published":"2026-10-21"},{"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)"},{"class":"open","licence":"CC0","name":"PoC-in-GitHub"}],"ssvc":{"automatable":"no","exploitation":"poc","technical_impact":"total"},"state":"PUBLISHED","updated":"2026-10-22","vendors":["python-pillow"]},"summary":"Heap buffer overflow in Pillow's JPEG decoder allows attackers to corrupt memory, crash the process, or execute code via crafted images.","url":"https://insights.sbomify.com/CVE-2026-112403/"}