CVE-2026-12491

MediumCVSS 4.8/10Last modified Jul 7, 2026

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.

Metrics

CVSS 3.1 4.8/10CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L

Weakness enumeration

Affected software

Source: the vendor's advisory (CNA). NVD analysis pending.

VendorProductVersions
vllm-projectvLLM>= 0.11.0, < 0.24.0
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat AI Inference Server—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat Enterprise Linux AI (RHEL AI) 3—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—
Red HatRed Hat OpenShift AI (RHOAI)—

References

Timeline

Published
Jun 17, 2026
Last modified
Jul 7, 2026
NVD status
Awaiting Analysis

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CVE-2026-12491: Medium severity, CVSS 4.8 | Vulnix