{"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-2026-55798 exists.","fix":"Upgrade pillow to 12.3.0 or later.","what":"CVE-2026-55798 is a medium-severity command injection vulnerability in Python Pillow, published on 6 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link."},"fix_prompt":"Check this codebase for CVE-2026-55798 and fix it if it is affected.\n\nWhat it is: CVE-2026-55798 is a medium-severity command injection vulnerability in Python Pillow, published on 6 Jul 2026. It can only be exploited from the same machine or local network, and only if a user opens a file or follows a link.\nExploitation: It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-55798 exists.\n\nAffected packages and fixed versions:\n- pillow (Bitnami): affected all versions; fixed in 12.3.0\n- pillow (PyPI): affected all versions; fixed in 12.3.0\n- pillow (PyPI): affected all versions; fixed in 12.3.0\n- Pillow (PyPI): affected all versions; 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-2026-55798/ (Markdown: https://insights.sbomify.com/CVE-2026-55798/index.md)","id":"CVE-2026-55798","markdown":"https://insights.sbomify.com/CVE-2026-55798/index.md","name":"CVE-2026-55798","record":{"aliases":["BIT-pillow-2026-55798","CLSA-2026-1787903381","CLSA-2026-1788345043","CLSA-2026-1788863918","ECHO-c51d-efb4-9117","GHSA-4x4j-2g7c-83w6","MINI-2mvj-hjgh-cghg","MINI-37f4-cw5j-p2pv","MINI-4rpv-px28-3c7v","MINI-52xm-2xhj-6c7h","MINI-7m97-pqmc-5m43","MINI-7q39-4535-95j5","MINI-7ww4-2prv-77w7","MINI-858q-7464-r54c","MINI-8xg3-mv56-6jq3","MINI-q45r-gmp7-425r","MINI-v7v2-m8vr-66gw","PYSEC-2026-2257"],"analysis":{"component_type":"library","fix_type":"upgrade","impacts":["code_execution"],"network_reachable":"adjacent_or_local","non_default_config":false,"product_category":"Python imaging library","requires_auth":"none","summary":"An attacker can execute arbitrary commands on Windows systems by providing a malicious file path to the Pillow library's viewer function.","user_interaction":"required","vuln_class":"command_injection"},"analysis_generated_by":"qwen3.8-flash-next","assigner":"GitHub_M","cpe":[{"product":"pillow","vendor":"python"}],"cvss":{"score":4.5,"severity":"medium","source":"cna","vector":"CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:L/A:L","version":"3.1"},"cwes":[{"id":"CWE-78","name":"Improper Neutralization of Special Elements used in an OS Command"}],"description":"Pillow is a Python imaging library. Prior to 12.3.0, WindowsViewer.get_command() constructed a cmd.exe shell command by directly embedding a file path into an f-string without escaping and passed the result to subprocess.Popen(..., shell=True), allowing shell metacharacters in the file path to inject arbitrary cmd.exe commands. 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: WindowsViewer.get_command() OS command injection via unescaped shell path","id":"CVE-2026-55798","indexable":true,"kev":null,"kind":"cve","links":{"ecosystem":"Bitnami","product":"python:pillow","products":["python:pillow"],"type":"command_injection","year":"2026"},"n_packages":4,"n_references":5,"next":{"headline":"Apache Ranger: Remote Code Execution Vulnerability in GraalScriptEngineCreator","id":"CVE-2026-55799"},"packages":[{"ecosystem":"Bitnami","fixed":["12.3.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:bitnami/pillow","source":"BIT-pillow-2026-55798"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["0"],"last_affected":[],"package":"Pillow","purl":null,"source":"GHSA-4x4j-2g7c-83w6"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"GHSA-4x4j-2g7c-83w6"},{"ecosystem":"PyPI","fixed":["12.3.0"],"introduced":["0"],"last_affected":[],"package":"pillow","purl":"pkg:pypi/pillow","source":"PYSEC-2026-2257"}],"prev":{"headline":"Argo CD repo-server command injection via crafted SSH repository SOCKS5 proxy URL","id":"CVE-2026-55797"},"products":["Pillow"],"published":"2026-07-06","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":"no","exploitation":"poc","technical_impact":"partial"},"state":"PUBLISHED","updated":"2026-07-07","vendors":["python-pillow"]},"summary":"An attacker can execute arbitrary commands on Windows systems by providing a malicious file path to the Pillow library's viewer function.","url":"https://insights.sbomify.com/CVE-2026-55798/"}