{"cve":"CVE-2026-5497","nvd":{"published":"2026-06-11T10:16:21.903","modified":"2026-10-26T11:10:00.157","status":"Modified","description":"vLLM versions 0.8.0 and later are vulnerable to an Out-of-Memory (OOM) Denial of Service (DoS) attack due to unbounded frame count processing in the `VideoMediaIO.load_base64()` method. When processing `video/jpeg` data URLs, the method splits the base64 data string on commas to extract individual JPEG frames without enforcing a frame count limit. An attacker can exploit this by crafting a single API request containing thousands of comma-separated base64-encoded JPEG frames in a data URL, causing the server to decode all frames into memory and crash due to excessive memory consumption. This vulnerability is reachable via the OpenAI-compatible chat completions API and does not require authentication.","cvss_v4":null,"cvss_v3":{"version":"3.1","vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","score":7.5},"cwes":["CWE-400","CWE-770"],"references":["https://github.com/vllm-project/vllm/commit/58ee61422169ce17e08248f8efa1e9df434fe395","https://huntr.com/bounties/7bd92629-b396-4449-8f88-6c0092530eb4","https://access.redhat.com/security/cve/CVE-2026-5497","https://bugzilla.redhat.com/show_bug.cgi?id=2487813","https://huntr.com/bounties/7bd92629-b396-4449-8f88-6c0092530eb4"],"products":["vllm:vllm"],"source":"nvd","synced_at":"2026-10-26T11:33:08.859761529+00:00"},"epss":{"cve":"CVE-2026-5497","score":0.00537,"percentile":0.44945,"date":"2026-10-25"},"kev":null,"osv":[{"id":"GHSA-wcwg-c5fc-9vrc","url":"https://osv.dev/vulnerability/GHSA-wcwg-c5fc-9vrc","summary":"vLLM is vulnerable to an Out-of-Memory (OOM) Denial of Service (DoS) attack due to unbounded frame count processing in the `VideoMediaIO.load_base64()` method","modified":"2026-08-18T20:40:58.539253503Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":[">=0.8.0 <0.19.0"],"fixed":["0.19.0"]}]},{"id":"PYSEC-2026-2302","url":"https://osv.dev/vulnerability/PYSEC-2026-2302","summary":"","modified":"2026-08-19T12:15:03.324111672Z","packages":[{"ecosystem":"PyPI","name":"vllm","purl":"pkg:pypi/vllm","ranges":[">=0.8.0 <0.19.0"],"fixed":["0.19.0"]}]}],"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."]}