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Python CVE-2026-54058

| EUVDEUVD-2026-43735 HIGH
Out-of-bounds Read (CWE-125)
2026-07-14 GitHub_M GHSA-62p4-gmf7-7g93
Python Buffer Overflow Information Disclosure Pillow
8.3
CVSS 4.0 · Vendor: GitHub_M
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Severity by source

Vendor (GitHub_M) PRIMARY
8.3 HIGH
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
SUSE
6.7 MEDIUM
AV:L/AC:H/PR:N/UI:N/S:U/C:H/I:N/A:H
Red Hat
9.1 HIGH
qualitative

Primary rating from Vendor (GitHub_M).

CVSS VectorVendor: GitHub_M

Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
X

Lifecycle Timeline

4
Patch available
Jul 14, 2026 - 18:20 EUVD
Source Code Evidence Fetched
Jul 14, 2026 - 17:02 vuln.today
Analysis Generated
Jul 14, 2026 - 17:02 vuln.today
CVE Published
Jul 14, 2026 - 16:27 cve.org
HIGH 8.3

Blast Radius

ecosystem impact
† from your stack dependencies † transitive graph · vuln.today resolves 4-path depth
  • 90,002 pypi packages depend on pillow (19,822 direct, 71,639 indirect)

Ecosystem-wide dependent count for version 12.3.0.

DescriptionCVE.org

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.

Articles & Coverage 1

News 14 New Python Vulnerabilities - 14 High Severity, 1 With POC Jul 15, 2026

AnalysisAI

Out-of-bounds memory disclosure in Python Pillow before 12.3.0 lets an attacker who supplies a crafted McIdas AREA image file read adjacent process memory or crash the host application. When such a file is opened from a filename, header words control the raw-codec mmap row stride; setting it below the true row width causes later pixel operations (tobytes, getpixel, convert, save) to read past the mapped region. No public exploit is identified at time of analysis and it is not in CISA KEV, but the upstream fix, PR, and a regression test are public, making the flaw well documented.

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Same weakness CWE-125 – Out-of-bounds Read

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Vendor StatusVendor

SUSE

Severity: Moderate
Product Status
SUSE Linux Enterprise Module for Package Hub 15 SP7 Fixed
openSUSE Tumbleweed Fixed
SUSE Linux Enterprise High Performance Computing 15 SP4-ESPOS Affected
SUSE Linux Enterprise High Performance Computing 15 SP4-LTSS Affected
SUSE Linux Enterprise High Performance Computing 15 SP5-ESPOS Affected

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CVE-2026-54058 vulnerability details – vuln.today
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