{"id":"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","details":"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.","aliases":["CVE-2026-5497","PYSEC-2026-2302"],"modified":"2026-08-18T20:40:58.539253503Z","published":"2026-06-11T12:32:44Z","database_specific":{"nvd_published_at":"2026-06-11T10:16:21Z","cwe_ids":["CWE-400","CWE-770"],"severity":"HIGH","github_reviewed":true,"github_reviewed_at":"2026-08-18T20:16:47Z"},"references":[{"type":"ADVISORY","url":"https://nvd.nist.gov/vuln/detail/CVE-2026-5497"},{"type":"WEB","url":"https://github.com/vllm-project/vllm/commit/58ee61422169ce17e08248f8efa1e9df434fe395"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33524"},{"type":"WEB","url":"https://access.redhat.com/errata/RHSA-2026:33531"},{"type":"WEB","url":"https://access.redhat.com/security/cve/CVE-2026-5497"},{"type":"WEB","url":"https://bugzilla.redhat.com/show_bug.cgi?id=2487813"},{"type":"WEB","url":"https://github.com/pypa/advisory-database/tree/main/vulns/vllm/PYSEC-2026-2302.yaml"},{"type":"PACKAGE","url":"https://github.com/vllm-project/vllm"},{"type":"WEB","url":"https://huntr.com/bounties/7bd92629-b396-4449-8f88-6c0092530eb4"},{"type":"WEB","url":"https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5497.json"}],"affected":[{"package":{"name":"vllm","ecosystem":"PyPI","purl":"pkg:pypi/vllm"},"ranges":[{"type":"ECOSYSTEM","events":[{"introduced":"0.8.0"},{"fixed":"0.19.0"}]}],"versions":["0.10.0","0.10.1","0.10.1.1","0.10.2","0.11.0","0.11.1","0.11.2","0.12.0","0.13.0","0.14.0","0.14.1","0.15.0","0.15.1","0.16.0","0.17.0","0.17.1","0.18.0","0.18.1","0.8.0","0.8.1","0.8.2","0.8.3","0.8.4","0.8.5","0.8.5.post1","0.9.0","0.9.0.1","0.9.1","0.9.2"],"database_specific":{"source":"https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-wcwg-c5fc-9vrc/GHSA-wcwg-c5fc-9vrc.json"}}],"schema_version":"1.9.0","severity":[{"type":"CVSS_V3","score":"CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H"}]}