bigcat88 pillow_heif up to 1.2.x HEIF Image Parser _pillow_heif.c out-of-bounds

CVSS Meta Temp Score
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CTI Interest Score
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7.1$0-$5k0.00

Summaryinfo

A vulnerability has been found in bigcat88 pillow_heif up to 1.2.x and classified as problematic. This vulnerability affects unknown code of the file _pillow_heif.c of the component HEIF Image Parser. The manipulation leads to out-of-bounds. This vulnerability is uniquely identified as CVE-2026-28231. The attack is possible to be carried out remotely. No exploit exists. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in bigcat88 pillow_heif up to 1.2.x and classified as problematic. This issue affects an unknown part of the file _pillow_heif.c of the component HEIF Image Parser. The manipulation with an unknown input leads to a out-of-bounds vulnerability. Using CWE to declare the problem leads to CWE-125. The product reads data past the end, or before the beginning, of the intended buffer. Impacted is availability. The summary by CVE is:

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.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-28231 since 02/25/2026. The exploitation is known to be easy. The attack may be initiated remotely. No form of authentication is needed for a successful exploitation. Technical details are known, but no exploit is available.

Upgrading to version 1.3.0 eliminates this vulnerability. The upgrade is hosted for download at github.com. Applying the patch 8305a15d3780c533b762578cbe987d27a2c59c7a is able to eliminate this problem. The bugfix is ready for download at github.com. The best possible mitigation is suggested to be upgrading to the latest version.

The vulnerability is also documented in the vulnerability database at EUVD (EUVD-2026-9061). If you want to get the best quality for vulnerability data then you always have to consider VulDB.

Productinfo

Vendor

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Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔒
VulDB Reliability: 🔍

CNA CVSS-B Score: 🔒
CNA CVSS-BT Score: 🔒
CNA Vector: 🔒

CVSSv3info

VulDB Meta Base Score: 7.2
VulDB Meta Temp Score: 7.1

VulDB Base Score: 5.3
VulDB Temp Score: 5.1
VulDB Vector: 🔒
VulDB Reliability: 🔍

NVD Base Score: 9.1
NVD Vector: 🔒

CVSSv2info

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VulDB Base Score: 🔒
VulDB Temp Score: 🔒
VulDB Reliability: 🔍

Exploitinginfo

Class: Out-of-bounds
CWE: CWE-125 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: pillow_heif 1.3.0
Patch: 8305a15d3780c533b762578cbe987d27a2c59c7a

Timelineinfo

02/25/2026 CVE reserved
02/27/2026 +2 days Advisory disclosed
02/27/2026 +0 days VulDB entry created
03/05/2026 +6 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: GHSA-5gjj-6r7v-ph3x
Status: Confirmed

CVE: CVE-2026-28231 (🔒)
GCVE (CVE): GCVE-0-2026-28231
GCVE (VulDB): GCVE-100-348197
EUVD: 🔒

Entryinfo

Created: 02/27/2026 22:13
Updated: 03/05/2026 20:12
Changes: 02/27/2026 22:13 (72), 03/01/2026 00:15 (1), 03/01/2026 18:26 (1), 03/04/2026 19:28 (11), 03/05/2026 20:12 (1)
Complete: 🔍
Cache ID: 216::103

If you want to get the best quality for vulnerability data then you always have to consider VulDB.

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