{"action":"Upgrade pillow to 12.3.0 or later.","affected":[{"fixed":"12.3.0","introduced":"0"}],"component":"pillow","cve_ids":["CVE-2026-54059"],"ecosystem":"PyPI","epss":0.0041,"exploited":false,"fixed_versions":["12.3.0"],"ghsa_id":"GHSA-8v84-f9pq-wr9x","id":"tcs_01M5KF93ZJ946WH5YPXA9ZGZH6","modified_at":"2026-09-10T03:51:11.229114807Z","published_at":"2026-07-20T21:08:27Z","references":["https://osv.dev/vulnerability/GHSA-8v84-f9pq-wr9x","https://github.com/python-pillow/Pillow/security/advisories/GHSA-8v84-f9pq-wr9x","https://nvd.nist.gov/vuln/detail/CVE-2026-54059","https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d","https://github.com/pypa/advisory-database/tree/main/vulns/pillow/PYSEC-2026-2253.yaml","https://github.com/python-pillow/Pillow","https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst"],"severity":{"label":"high","score":7.5},"sources":[{"source":"osv","source_id":"GHSA-8v84-f9pq-wr9x","url":"https://osv.dev/vulnerability/GHSA-8v84-f9pq-wr9x"}],"summary":"Pillow `PcfFontFile._load_bitmaps()`: `Image.frombytes()` called without `_decompression_bomb_check()` — bomb protection bypass via PCF font loading"}