CVE-2026-112403

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Source
https://cve.org/CVERecord?id=CVE-2026-112403
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-112403.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-112403
Aliases
Downstream
CGA (82)
CLEANSTART (3)
CLSA (6)
DEBIAN (1)
ECHO (1)
ROOT (1)
SUSE (1)
UBUNTU (1)
Related
Published
2026-10-19T21:22:21Z
Modified
2026-11-03T13:27:01Z
Severity
  • 9.2 (Critical) CVSS_V4 - CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Pillow: Heap buffer overflow in ImagingJpegDecode
Details

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's JPEG decoder can write a full-width scanline into a buffer sized for a requested draft scale. ImagingJpegDecode does not verify libjpeg's actual output width and component count after scaling is requested, and an 8-bit lossless SOF3 JPEG decoded by a build linked to libjpeg-turbo 3.x can ignore the requested downscaling geometry. An attacker can supply such a JPEG to an application that uses draft() or thumbnail() to request downscaling. This can corrupt heap memory, crash the process, or potentially allow code execution. Older libjpeg-turbo 2.x and IJG builds reject the SOF3 input. This issue is fixed in version 13.0.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-122"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/112xxx/CVE-2026-112403.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
293218ad059d994baf1777d882911bed6a49704a
Fixed
242a059aedc1935097d9aa1dc3f099750467ba75
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:python:pillow:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "13.0.0"
                }
            ],
            "source": "CPE_RANGE"
        },
        {
            "range": [
                {
                    "fixed": "242a059aedc1935097d9aa1dc3f099750467ba75"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "13.0.0",
            "range": [
                {
                    "fixed": "293218ad059d994baf1777d882911bed6a49704a"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

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
12.3.0
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-2026-112403.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "174672382090074285765178868364185036449",
            "length": 3146
        },
        "id": "CVE-2026-112403-23b030c6",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/python-pillow/pillow/commit/242a059aedc1935097d9aa1dc3f099750467ba75",
        "target": {
            "file": "src/libImaging/JpegDecode.c",
            "function": "ImagingJpegDecode"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "241043789764821415875146612677275012071",
                "213594770400001693933981602434679768241",
                "202014699571398194546668346273410007608"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-112403-9e133905",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/python-pillow/pillow/commit/242a059aedc1935097d9aa1dc3f099750467ba75",
        "target": {
            "file": "src/libImaging/JpegDecode.c"
        }
    }
]
vanir_signatures_modified 
"2026-10-29T07:24:15Z"