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onyx --cves cve-2026-54059

CVE-2026-54059

HIGHPOCPython (CPython)
score
2.1
cvss
7.5
epss
0.4%
published
2026-07-06
kev added
—
first seen

Pillow < 12.3.0 contains a denial of service caused by lack of decompression bomb check in PCF font bitmap loading, letting attackers cause excessive memory allocation via crafted PCF font data, exploit requires crafted font input.

Timeline

How this CVE moved toward exploitation. Chart: last 30 days — trend score, EPSS, community mentions per day; hover the event lane.

events2026-07-06 — PublishedP2026-10-21 — Tracked by OnyxT2026-10-21 — Public PoCXscore2026-10-21: score 2.12.1epss2026-09-22: epss 0.4%2026-09-23: epss 0.4%2026-09-24: epss 0.6%2026-09-25: epss 0.6%2026-09-26: epss 0.6%2026-09-27: epss 0.6%2026-09-29: epss 0.6%2026-09-30: epss 0.6%2026-10-01: epss 0.6%2026-10-02: epss 0.4%2026-10-03: epss 0.4%2026-10-04: epss 0.4%2026-10-05: epss 0.4%2026-10-06: epss 0.4%2026-10-07: epss 0.4%2026-10-08: epss 0.4%2026-10-09: epss 0.4%2026-10-10: epss 0.4%2026-10-11: epss 0.4%2026-10-12: epss 0.4%2026-10-13: epss 0.4%2026-10-14: epss 0.4%2026-10-15: epss 0.4%2026-10-16: epss 0.4%2026-10-18: epss 0.4%2026-10-19: epss 0.4%2026-10-20: epss 0.4%2026-10-21: epss 0.4%0.4%mentions/day0no mentions in 30 days2026-09-22today
  1. Published
  2. Tracked by Onyx
  3. Public PoC

Exploit availability

Public PoC flagged by vulnx; no direct exploit link among the citations.

Weaknesses

CWE-789

References 3