CVE-2026-12491

Vllm: vllm: image exif rotation & png trns transparency not normalized, causing mismatch between model input and expectations

Published Jun 17, 2026 CVSS 3.1 · 4.8 Medium EPSS < 1% KEV · Not listed
Description
A flaw was found in vLLM, an open-source library for large language model inference. This vulnerability arises from improper handling of image metadata, specifically EXIF orientation and PNG transparency (tRNS) data, during image processing. When images are converted to RGB, transparency information may be implicitly discarded or remapped, leading to unexpected rendering of transparent pixels and distortion of input content. This can result in the model misinterpreting image content, potentially affecting the integrity of processed data.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source ID Title
Github GHSA Github GHSA GHSA-8jr5-v98p-w75m vLLM: image EXIF Rotation & PNG tRNS Transparency Not Normalized, Causing Mismatch Between Model Input and Expectations
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
Description A flaw was found in vLLM, an open-source library for large language model inference. This vulnerability arises from improper handling of image metadata, specifically EXIF orientation and PNG transparency (tRNS) data, during image processing. When images are converted to RGB, transparency information may be implicitly discarded or remapped, leading to unexpected rendering of transparent pixels and distortion of input content. This can result in the model misinterpreting image content, potentially affecting the integrity of processed data.
Title Vllm: vllm: image exif rotation & png trns transparency not normalized, causing mismatch between model input and expectations
First Time appeared Redhat
Redhat ai Inference Server
Redhat enterprise Linux Ai
Redhat openshift Ai
Weaknesses CWE-115
CPEs cpe:/a:redhat:ai_inference_server:3
cpe:/a:redhat:enterprise_linux_ai:3
cpe:/a:redhat:openshift_ai
Vendors & Products Redhat
Redhat ai Inference Server
Redhat enterprise Linux Ai
Redhat openshift Ai
References
Metrics cvssV3_1

{'score': 4.8, 'vector': 'CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
redhat
Published
Updated
Jul 7, 2026, 7:44 AM
Reserved
Jun 17, 2026, 7:24 AM
Status
Awaiting Analysis
Published
Jun 17, 2026, 1:20 PM
Modified
Jul 7, 2026, 9:16 AM
Severity
Moderate
Public date
Jun 10, 2026, 12:00 AM