CVE-2026-28231

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Source
https://cve.org/CVERecord?id=CVE-2026-28231
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28231.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-28231
Aliases
  • GHSA-5gjj-6r7v-ph3x
Published
2026-02-27T20:13:45.195Z
Modified
2026-03-03T02:56:54.679255Z
Severity
  • 5.5 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P CVSS Calculator
Summary
pillow_heif Has Integer Overflow in Encode Path Buffer Validation that Leads to Heap Out-of-Bounds Read
Details

pillow_heif is a Python library for working with HEIF images and plugin for Pillow. Prior to version 1.3.0, an integer overflow in the encode path buffer validation of _pillow_heif.c allows an attacker to bypass bounds checks by providing large image dimensions, resulting in a heap out-of-bounds read. This can lead to information disclosure (server heap memory leaking into encoded images) or denial of service (process crash). No special configuration is required — this triggers under default settings. Version 1.3.0 fixes the issue.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/28xxx/CVE-2026-28231.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-125",
        "CWE-190"
    ]
}
References

Affected packages

Git / github.com/bigcat88/pillow_heif

Affected ranges

Type
GIT
Repo
https://github.com/bigcat88/pillow_heif
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
6bffca6bada2e071418a9092e7958bcecf4652c1

Affected versions

v0.*
v0.1.1
v0.1.10
v0.1.11
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7
v0.1.8
v0.1.9
v0.10.0
v0.10.1
v0.11.0
v0.11.1
v0.12.0
v0.13.0
v0.13.1
v0.14.0
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.20.0
v0.21.0
v0.22.0
v0.3.0
v0.3.1
v0.3.2
v0.4.0
v0.5.0
v0.5.1
v0.6.0
v0.6.1
v0.7.0
v0.7.1
v0.7.2
v0.8.0
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v1.*
v1.0.0
v1.1.0
v1.1.1
v1.2.0
v1.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-28231.json"