python-pillow Pillow up to 12.x Morphology ImageMorph.MorphOp.apply buffer overflow

CVSS Meta Temp Score
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CTI Interest Score
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5.3$0-$5k0.89+

Summaryinfo

A vulnerability classified as critical has been found in python-pillow Pillow up to 12.x. The impacted element is the function ImageMorph.MorphOp.apply of the component Morphology. The manipulation leads to buffer overflow. This vulnerability is documented as CVE-2026-112397. The attack can be initiated remotely. There is not any exploit available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as critical, has been found in python-pillow Pillow up to 12.x. This issue affects the function ImageMorph.MorphOp.apply of the component Morphology. The manipulation with an unknown input leads to a buffer overflow vulnerability. Using CWE to declare the problem leads to CWE-120. The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer, leading to a buffer overflow. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Pillow is a Python imaging library. Prior to 13.0.0, Pillow's ImageMorph.MorphOp.apply() can access memory before a row buffer for a zero-width image. PPM and PGM input can create an image with width zero, and the native morphology routine indexes outrow[width - 1] without rejecting that geometry. An attacker can supply such an image to an application that applies a morphology operation. This can crash the process. This issue is fixed in version 13.0.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-112397 since 10/19/2026. The exploitation is known to be easy. The attack may be initiated remotely. It demands that the victim is doing some kind of user interaction. Technical details are known, but no exploit is available.

Upgrading to version 13.0.0 eliminates this vulnerability.

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Productinfo

Type

Vendor

Name

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: 5.5
VulDB Meta Temp Score: 5.3

VulDB Base Score: 5.5
VulDB Temp Score: 5.3
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Buffer overflow
CWE: CWE-120 / CWE-119
CAPEC: 🔒
ATT&CK: 🔒

Physical: No
Local: No
Remote: Yes

Availability: 🔒
Status: Not defined
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 13.0.0

Timelineinfo

10/19/2026 CVE reserved
10/19/2026 +0 days VulDB entry created
10/20/2026 +0 days Advisory disclosed
10/20/2026 +0 days VulDB entry last update

Sourcesinfo

Product: github.com

Advisory: github.com
Status: Confirmed

CVE: CVE-2026-112397 (🔒)
GCVE (CVE): GCVE-0-2026-112397
GCVE (VulDB): GCVE-100-422561

Entryinfo

Created: 10/20/2026 00:58
Changes: 10/20/2026 00:58 (69)
Complete: 🔍
Cache ID: 216::103

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