{"answers":{"affected":"4 open source packages ship an affected version, including pillow. It affects 1 product.","exploited":"It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-59203 exists.","fix":"Upgrade pillow to 12.3.0 or later.","what":"CVE-2026-59203 is a medium-severity denial of service vulnerability in Python Pillow, published on 14 Jul 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-2026-59203 and fix it if it is affected.\n\nWhat it is: CVE-2026-59203 is a medium-severity denial of service vulnerability in Python Pillow, published on 14 Jul 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-2026-59203 exists.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected from 12.0.0; fixed in 12.3.0\n- pillow (PyPI): affected from 12.0.0; fixed in 12.3.0\n- pillow (PyPI): affected from 12.0.0; fixed in 12.3.0\n- pillow (PyPI): affected from 12.0.0; fixed in 12.3.0\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-2026-59203/ (Markdown: https://insights.sbomify.com/CVE-2026-59203/index.md)","id":"CVE-2026-59203","markdown":"https://insights.sbomify.com/CVE-2026-59203/index.md","name":"CVE-2026-59203","record":{"aliases":["BIT-pillow-2026-59203","DEBIAN-CVE-2026-59203","ECHO-9f30-2662-0f87","GHSA-pg7v-jwj7-p798","MINI-24v6-5w5r-gp9w","MINI-33p8-x982-5jxx","MINI-3482-jg8q-xr97","MINI-3w9c-578q-hjhw","MINI-5cgp-fqxf-mq6h","MINI-7p5f-5hqm-j843","MINI-fjh7-2xh5-2m3h","MINI-jm8c-v29p-5f25","MINI-qvj8-ww4h-g9w2","MINI-v27w-9r5v-3976","PYSEC-2026-3452","ROOT-APP-PYPI-CVE-2026-59203","UBUNTU-CVE-2026-59203"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["denial_of_service"],"network_reachable":"yes","non_default_config":false,"product_category":"Python imaging library","requires_auth":"none","summary":"A crafted EPS file with a negative byte count causes an infinite loop in Pillow's parser, leading to denial of service.","user_interaction":"not_required","vuln_class":"denial_of_service"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":5.3,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L","version":"3.1"},"cwes":[{"id":"CWE-835","name":"Loop with Unreachable Exit Condition"}],"description":"Pillow is a Python imaging library. From 12.0.0 through 12.2.0, Pillow's EPS parser in PIL/EpsImagePlugin.py accepts a negative byte count in the %%BeginBinary directive, allowing a crafted EPS file to cause Image.open() to seek backwards to the same directive and parse it repeatedly in an infinite loop. This issue is fixed in version 12.3.0.","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 EpsImagePlugin negative %%BeginBinary byte count causes infinite loop denial of service","id":"CVE-2026-59203","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":"denial_of_service","year":"2026"},"n_packages":4,"n_references":4,"next":{"headline":"Pillow JPEG2000 tiled decode retains a growing scratch buffer and can be used for denial of service","id":"CVE-2026-59204"},"packages":[{"ecosystem":"Bitnami","fixed":["12.3.0"],"introduced":["12.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2026-59203"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["12.0.0"],"last_affected":[],"package":"pillow","purl":null,"source":"GHSA-pg7v-jwj7-p798"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["12.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-pg7v-jwj7-p798"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["12.0.0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2026-3452"}],"prev":{"headline":"Pillow: Decompression Bomb DoS via PdfParser.PdfStream.decode()","id":"CVE-2026-59200"},"products":["Pillow"],"published":"2026-07-14","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)"}],"ssvc":{"automatable":"yes","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-15","vendors":["python-pillow"]},"summary":"A crafted EPS file with a negative byte count causes an infinite loop in Pillow's parser, leading to denial of service.","url":"https://insights.sbomify.com/CVE-2026-59203/"}