{"cve":"CVE-2026-12491","nvd":{"published":"2026-06-17T13:20:04.323","modified":"2026-07-07T09:16:29.103","status":"Awaiting Analysis","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_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:L/A:L","score":4.8},"cwes":["CWE-115"],"references":["https://access.redhat.com/security/cve/CVE-2026-12491","https://bugzilla.redhat.com/show_bug.cgi?id=2489786"],"products":[],"source":"nvd","synced_at":"2026-10-19T22:39:28.638635428+00:00"},"epss":{"cve":"CVE-2026-12491","score":0.00239,"percentile":0.15055,"date":"2026-10-31"},"kev":null,"osv":[{"id":"GHSA-8jr5-v98p-w75m","url":"https://osv.dev/vulnerability/GHSA-8jr5-v98p-w75m","summary":"vLLM: image EXIF Rotation & PNG tRNS Transparency Not Normalized, Causing Mismatch Between Model Input and Expectations","modified":"2026-09-10T03:51:08.284406367Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":[">=0.11.0 <0.24.0"],"fixed":["0.24.0"]}]},{"id":"PYSEC-2026-3406","url":"https://osv.dev/vulnerability/PYSEC-2026-3406","summary":"vLLM: image EXIF Rotation & PNG tRNS Transparency Not Normalized, Causing Mismatch Between Model Input and Expectations","modified":"2026-07-13T16:33:32.323602606Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":[">=0.11.0 <=0.23.0"],"fixed":[]}]}],"attribution":["This product uses the NVD API but is not endorsed or certified by the NVD.","EPSS scores: FIRST Exploit Prediction Scoring System, https://www.first.org/epss","Known exploited vulnerabilities: CISA Known Exploited Vulnerabilities Catalog, https://www.cisa.gov/known-exploited-vulnerabilities-catalog","Package advisories: OSV (https://osv.dev), from the GitHub Advisory Database, PyPA, Go, RustSec and other ecosystem databases, under CC-BY 4.0 or CC0","CVE records: the CVE Program's CVE List (https://www.cve.org), under its terms of use (https://www.cve.org/Legal/TermsOfUse). CVE is a registered trademark of The MITRE Corporation; this product is not affiliated with the CVE Program."]}