{"cve":"CVE-2026-55379","nvd":{"published":"2026-07-06T19:17:08.577","modified":"2026-10-25T20:10:00.147","status":"Analyzed","description":"Pillow is a Python imaging library. Prior to 12.3.0, PIL/BdfFontFile.py bdf_char() read the BBX width and height field from a BDF font file and passed attacker-controlled dimensions to Image.new() without calling Image._decompression_bomb_check(), bypassing Pillow's documented decompression bomb protection and allowing excessive memory allocation. This issue is fixed in version 12.3.0.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-789"],"references":["https://github.com/python-pillow/Pillow/blob/main/docs/releasenotes/12.3.0.rst","https://github.com/python-pillow/Pillow/commit/0a263e6264aa5399988d9acd3bbfbca2ca3ec77d","https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc","https://github.com/python-pillow/Pillow/security/advisories/GHSA-45hq-cxwh-f6vc"],"products":["python:pillow"],"source":"nvd","synced_at":"2026-10-25T23:44:34.550481224+00:00"},"epss":{"cve":"CVE-2026-55379","score":0.00522,"percentile":0.44025,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-45hq-cxwh-f6vc","url":"https://osv.dev/vulnerability/GHSA-45hq-cxwh-f6vc","summary":"Pillow `BdfFontFile`: `Image.new()` called without `_decompression_bomb_check()` — bomb protection bypass via font loading","modified":"2026-09-10T03:50:51.372929814Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":["<12.3.0"],"fixed":["12.3.0"]}]},{"id":"PYSEC-2026-2255","url":"https://osv.dev/vulnerability/PYSEC-2026-2255","summary":"","modified":"2026-07-13T07:26:26.726353373Z","packages":[{"ecosystem":"PyPI","name":"pillow","purl":"pkg:pypi/pillow","ranges":["<12.3.0"],"fixed":["12.3.0"]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}