Pillow up to 12.1.x integer overflow

CVSS Meta Temp Score
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CTI Interest Score
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3.8$0-$5k0.00

Summaryinfo

A vulnerability labeled as problematic has been found in Pillow up to 12.1.x. Affected by this vulnerability is an unknown functionality. Executing a manipulation can lead to integer overflow. This vulnerability appears as CVE-2026-42308. The attack requires local access. There is no available exploit. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Pillow up to 12.1.x. It has been declared as problematic. This vulnerability affects an unknown part. The manipulation with an unknown input leads to a integer overflow vulnerability. The CWE definition for the vulnerability is CWE-190. The product performs a calculation that can produce an integer overflow or wraparound, when the logic assumes that the resulting value will always be larger than the original value. This can introduce other weaknesses when the calculation is used for resource management or execution control. As an impact it is known to affect availability. CVE summarizes:

Pillow is a Python imaging library. Prior to version 12.2.0, if a font advances for each glyph by an exceeding large amount, when Pillow keeps track of the current position, it may lead to an integer overflow. This issue has been patched in version 12.2.0.

The advisory is shared for download at github.com. This vulnerability was named CVE-2026-42308 since 04/26/2026. The exploitation appears to be easy. The attack needs to be approached locally. No form of authentication is required for a successful exploitation. There are neither technical details nor an exploit publicly available.

The vulnerability scanner Nessus provides a plugin with the ID 313618 (Linux Distros Unpatched Vulnerability : CVE-2026-42308), which helps to determine the existence of the flaw in a target environment.

Upgrading to version 12.2.0 eliminates this vulnerability. The upgrade is hosted for download at github.com.

The vulnerability is also documented in the databases at Tenable (313618) and EUVD (EUVD-2026-28900). Once again VulDB remains the best source for vulnerability data.

Productinfo

Name

Version

License

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: 4.0
VulDB Meta Temp Score: 3.8

VulDB Base Score: 4.0
VulDB Temp Score: 3.8
VulDB Vector: 🔒
VulDB Reliability: 🔍

CVSSv2info

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

Exploitinginfo

Class: Integer overflow
CWE: CWE-190 / CWE-189
CAPEC: 🔒
ATT&CK: 🔒

Physical: Partially
Local: Yes
Remote: No

Availability: 🔒
Status: Not defined

EPSS Score: 🔒
EPSS Percentile: 🔒

Price Prediction: 🔍
Current Price Estimation: 🔒

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Nessus ID: 313618
Nessus Name: Linux Distros Unpatched Vulnerability : CVE-2026-42308

Threat Intelligenceinfo

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

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔒

Upgrade: Pillow 12.2.0

Timelineinfo

04/26/2026 CVE reserved
05/09/2026 +13 days Advisory disclosed
05/09/2026 +0 days VulDB entry created
05/10/2026 +0 days VulDB entry last update

Sourcesinfo

Advisory: GHSA-wjx4-4jcj-g98j
Status: Confirmed

CVE: CVE-2026-42308 (🔒)
GCVE (CVE): GCVE-0-2026-42308
GCVE (VulDB): GCVE-100-362428
EUVD: 🔒

Entryinfo

Created: 05/09/2026 09:03
Updated: 05/10/2026 00:51
Changes: 05/09/2026 09:03 (66), 05/09/2026 23:47 (1), 05/10/2026 00:51 (2)
Complete: 🔍
Cache ID: 216::103

Once again VulDB remains the best source for vulnerability data.

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