CVE-2026-54059

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Source
https://cve.org/CVERecord?id=CVE-2026-54059
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54059.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-54059
Aliases
Downstream
ALSA (1)
CGA (31)
CLSA (6)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (11)
OESA (5)
openSUSE (2)
RHSA (10)
RLSA (1)
ROOT (1)
SUSE (3)
UBUNTU (1)
Related
ALSA (1)
openSUSE (2)
SUSE (3)
Published
2026-07-06T18:46:09Z
Modified
2026-10-28T02:30:42Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
Pillow: PcfFontFile._load_bitmaps()`: `Image.frombytes()` called without `_decompression_bomb_check()` — bomb protection bypass via PCF font loading
Details

Pillow is a Python imaging library. Prior to 12.3.0, PIL/PcfFontFile.py _load_bitmaps() read glyph dimensions from the PCF METRICS section and passed them directly to Image.frombytes() without calling Image._decompression_bomb_check(), allowing crafted PCF font data to cause excessive memory allocation. This issue is fixed in version 12.3.0.

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-789"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/54xxx/CVE-2026-54059.json"
}
References

Affected packages

Git / github.com/python-pillow/pillow

Affected ranges

Type
GIT
Repo
https://github.com/python-pillow/pillow
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
bb1d8e8ab8d29048624d96e3ee53cecf7c13d13d
Fixed
0a263e6264aa5399988d9acd3bbfbca2ca3ec77d
Database specific
Show details 
{
    "extracted_events":  [
        {
            "cpe":  "cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*",
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "12.3.0"
                }
            ],
            "source":  "CPE_RANGE"
        },
        {
            "range":  [
                {
                    "fixed":  "0a263e6264aa5399988d9acd3bbfbca2ca3ec77d"
                }
            ],
            "source":  "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

1.*
1.0
1.2
1.7.7
1.7.8
10.*
10.0.0
10.1.0
10.2.0
10.3.0
10.4.0
11.*
11.0.0
11.1.0
11.2.1
11.3.0
12.*
12.0.0
12.1.0
12.2.0
2.*
2.0.0
2.1.0
2.2.0
2.2.1
2.3.0
2.5.0
2.7.0
2.8.0
2.8.1
2.9.0
2.9.0.dev0
2.9.0.dev1
2.9.0.dev2
3.*
3.1.0
3.1.0-rc1
3.2.0
3.3.0
3.4.0
4.*
4.0.0
4.0.0a
4.1.0
4.2.0
4.3.0
5.*
5.0.0
5.1.0
5.2.0
5.3.0
5.4.0
6.*
6.0.0
6.1.0
6.2.0
7.*
7.0.0
7.1.0
7.2.0
8.*
8.0.0
8.1.0
8.2.0
8.3.0
8.4.0
9.*
9.0.0
9.1.0
9.2.0
9.3.0
9.4.0
9.5.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-54059.json"