CVE-2026-54058
High
High exploit probability or critical severity with a known exploit.
CVSS base
9.1
CRITICAL
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
EPSS — probability of exploitation (30 days)
0.5%
43.2th percentile
CISA KEV
Not listed
Weakness / dates
CWE-125
Published 2026-07-14 · modified 2026-08-06
CVSS breakdown
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
| Attack Vector | N | Network |
| Attack Complexity | L | Low |
| Privileges Required | N | None |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | N | None |
| Availability | H | High |
Timeline
- 2026-07-14 — Published (NVD)
- 2026-08-06 — Last modified (NVD)
Description
Pillow is a Python imaging library. Prior to 12.3.0, when Pillow loads an uncompressed McIdas AREA image from a filename through the mmap raw codec path, attacker-controlled header words can set a row stride smaller than the natural row width, causing pixel access such as Image.tobytes(), getpixel, convert, or save to read beyond the mapped region and disclose adjacent process memory or fault. This issue is fixed in version 12.3.0.
Affected
References
- https://github.com/python-pillow/Pillow/commit/6a8de891fb00968e5ea79bfa84368ed90b3cfc1d
- https://github.com/python-pillow/Pillow/pull/9719
- https://github.com/python-pillow/Pillow/releases/tag/12.3.0
- exploit https://github.com/python-pillow/Pillow/security/advisories/GHSA-62p4-gmf7-7g93
- exploit https://github.com/python-pillow/Pillow/security/advisories/GHSA-62p4-gmf7-7g93