PT-2026-43245 · Vllm · Vllm

Zyz3366 · CVE-2026-9540 · Published 2026-05-26 · Updated 2026-07-13

Positive Technologies (AI Summary)

CVSS v4.0

5.5

Medium

Base vector

AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P

Name of the Vulnerable Software and Affected Versions vllm version 0.19.0

Description A remote denial of service can be triggered through improper processing within the OpenAI-compatible Serving Path component.

Recommendations At the moment, there is no information about a newer version that contains a fix for this vulnerability.

Exploit

Improper Resource Release

Weakness Enumeration

CWE-404

Related Identifiers

CVE-2026-9540

GHSA-98F3-HWG4-4RF7

PYSEC-2026-3407

Affected Products

Vllm

References · 14

• 🔥 https://github.com/vllm-project/vllm/issues/37343 · Exploit
• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/9xxx/CVE-2026-9540.json · Exploit
• https://github.com/vllm-project/vllm/pull/37594 · Patch
• https://osv.dev/vulnerability/GHSA-98f3-hwg4-4rf7 · Vendor Advisory
• https://nvd.nist.gov/vuln/detail/CVE-2026-9540 · Security Note
• https://osv.dev/vulnerability/CVE-2026-9540 · Vendor Advisory
• https://osv.dev/vulnerability/PYSEC-2026-3407 · Vendor Advisory
• https://github.com/vllm-project/vllm · Note
• https://ingero.io/debugging-vllm-latency-minimax-ollama-mcp · Note
• https://vuldb.com/vuln/365601/cti · Note
• https://github.com/advisories/GHSA-98f3-hwg4-4rf7 · Note
• https://pypi.org/project/vllm · Note
• https://vuldb.com/submit/814645 · Note
• https://vuldb.com/vuln/365601 · Note