4.8

CVE-2026-12491: Vllm: vllm: image exif rotation & png trns transparency not normalized, causing mismatch between model input and expectations

Awaiting analysis
AliasesGHSA-8jr5-v98p-w75mPYSEC-2026-3406CGA-39qv-96c6-x6f6
Published 17-06-2026Last modified 07-07-2026

Vulnerability summary

CVE-2026-12491 is a medium (CVSS 4.8) Misinterpretation of Input vulnerability in vllm-project vllm. EPSS estimates a 0.24% chance of exploitation in the next 30 days, higher than 14.1% of scored vulnerabilities.

Overall risk
19/100
0100
Low · default modelHow is this calculated?
CVSS score
4.8/10
010
Medium · v3.1 (CVE.org)
EPSS score
0.24%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 1
CGA-42QX-RWR9-J85C

Timeline

  1. 17-06-2026
    PublishedVulnerability first disclosed.
  2. 07-07-2026
    Last modifiedVulnerability information updated.

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.

CVSS metrics

4 scores · 4 sources · 1 version

EPSS trend

Probability

0.24%

Chance of exploitation in the next 30 days

Percentile

14%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.24% on 22-09-2026

22-09-202622-10-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Chainguard15 products
  • lmcache-cuda-12.8All versions (No fix recorded)
  • nemo-rl-cuda-13.0-vllmAll versions (No fix recorded)
  • py3.10-vllm-cuda-12.4All versions (No fix recorded)
  • py3.10-vllm-cuda-12.9All versions (No fix recorded)
  • py3.10-vllm-cuda-13.0All versions (No fix recorded)
PyPI1 product
  • vllm≥ 0.11.0, < 0.24.0 | ≥ 0.11.0, ≤ 0.23.0
Vllm-project1 product
  • vllm≥ 0.11.0, < 0.24.0

3 vendors · 17 products

References

12 links
Show all 12 references