{"answers":{"affected":"3 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-2026-112898 exists.","fix":"Upgrade pillow to 13.0.0 or later.","what":"CVE-2026-112898 is a medium-severity 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-2026-112898 and fix it if it is affected.\n\nWhat it is: CVE-2026-112898 is a medium-severity 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-2026-112898 exists.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected from 9.1.0; fixed in 13.0.0\n- pillow (PyPI): affected from 9.1.0; fixed in 13.0.0\n- Pillow (PyPI): affected from 9.1.0; 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-2026-112898/ (Markdown: https://insights.sbomify.com/CVE-2026-112898/index.md)","id":"CVE-2026-112898","markdown":"https://insights.sbomify.com/CVE-2026-112898/index.md","name":"CVE-2026-112898","record":{"aliases":["BIT-pillow-2026-112898","DEBIAN-CVE-2026-112898","ECHO-40ef-e643-dc9f","GHSA-rfgq-q3w2-pmv2","UBUNTU-CVE-2026-112898"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["data_read"],"network_reachable":"yes","non_default_config":false,"product_category":"Python imaging library","requires_auth":"none","summary":"An attacker can leak uninitialized stack memory, including addresses and canaries, by providing an empty palette to Image.quantize() in Pillow.","user_interaction":"not_required","vuln_class":"information_disclosure"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":6.9,"severity":"medium","source":"cna","vector":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N","version":"4.0"},"cwes":[{"id":"CWE-457","name":"Use of Uninitialized Variable"}],"description":"Pillow is a Python imaging library. From 9.1.0 until 13.0.0, Pillow can disclose uninitialized stack memory when Image.quantize() uses an empty palette. ImagingPaletteCacheUpdate() leaves a local cache array uninitialized when the palette has zero entries, and the conversion path emits those bytes as output pixel indices. An attacker who controls the palette image can obtain stack contents from a returned PNG or GIF. This can disclose addresses and stack-canary data without an out-of-bounds access, memory corruption, or process crash. 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":"weaponised"},"has_fix":true,"headline":"Pillow: Image.quantize() with empty palette leaks uninitialized stack memory","id":"CVE-2026-112898","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":"information_disclosure","year":"2026"},"n_packages":3,"n_references":3,"next":{"headline":"Pillow: Argument Injection in Ghostscript call, potentially leading into RCE","id":"CVE-2026-112900"},"packages":[{"ecosystem":"Bitnami","fixed":["13.0.0"],"introduced":["9.1.0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2026-112898"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["9.1.0"],"last_affected":[],"package":"Pillow","purl":null,"source":"GHSA-rfgq-q3w2-pmv2"},{"ecosystem":"PyPI","fixed":["13.0.0"],"introduced":["9.1.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-rfgq-q3w2-pmv2"}],"prev":{"headline":"Pillow: TiffDecode returns uninitialized memory as pixels for short JPEG strips","id":"CVE-2026-112897"},"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":"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":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-10-28","vendors":["python-pillow"]},"summary":"An attacker can leak uninitialized stack memory, including addresses and canaries, by providing an empty palette to Image.quantize() in Pillow.","url":"https://insights.sbomify.com/CVE-2026-112898/"}