Staging Environment: Content and features may be unstable or change without notice.
Advisory details: github_osv / GHSA-78fp-cf4h-g36p
Advisory ID github_osv/GHSA-78fp-cf4h-g36p
Aliases
Summary Duplicate Advisory: vLLM introduced enhanced protection for CVE-2025-62164 ### Duplicate Advisory This advisory has been withdrawn because it is a duplicate of GHSA-mcmc-2m55-j8jj. This link is maintained to preserve external references. ### Original Description vLLM versions >= 0.10.2 and < 0.13.0 are missing sparse tensor validation in multimodal embeddings processing. Because PyTorch disables sparse tensor invariant checks by default, an attacker can submit crafted embedding requests with malformed (negative or out-of-bounds) tensor indices, when the prompt-embeds feature is enabled, to trigger crashes or resource exhaustion (denial of service), with potential for out-of-bounds/write-what-where memory corruption. This continues CVE-2025-62164, whose prior fix only disabled the feature by default rather than addressing the root cause.
Status Published
Exploitability 0.5
Weighted Severity 7.9
Risk 4.0
Affected and Fixed Packages Package Details
Introduced and Fixed Package Commit Patches Package Commit Patches Details
Weaknesses (2)
CWE-20 Improper Input Validation
CWE-787 Out-of-bounds Write
System Score Found at
cvssv3.1 8.8 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-78fp-cf4h-g36p/GHSA-78fp-cf4h-g36p.json
cvssv4 8.7 https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-78fp-cf4h-g36p/GHSA-78fp-cf4h-g36p.json
generic_textual HIGH
Reference id Reference type URL
https://access.redhat.com/security/cve/CVE-2026-56340
https://bugzilla.redhat.com/show_bug.cgi?id=2491060
https://github.com/vllm-project/vllm
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56340.json
https://www.vulncheck.com/advisories/vllm-denial-of-service-via-unvalidated-multimodal-embeddings
CVE-2026-56340 https://nvd.nist.gov/vuln/detail/CVE-2026-56340
GHSA-mcmc-2m55-j8jj https://github.com/vllm-project/vllm/security/advisories/GHSA-mcmc-2m55-j8jj
No exploits are available.

No EPSS data available for this advisory.

Patch URL
There are no known patches.
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-78fp-cf4h-g36p/GHSA-78fp-cf4h-g36p.json
Attack Vector (AV) Attack Complexity (AC) Privileges Required (PR) User Interaction (UI) Scope (S) Confidentiality Impact (C) Integrity Impact (I) Availability Impact (A)

network

adjacent_network

local

physical

low

high

none

low

high

none

required

unchanged

changed

high

low

none

high

low

none

high

low

none
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N Found at https://github.com/github/advisory-database/blob/main/advisories/github-reviewed/2026/06/GHSA-78fp-cf4h-g36p/GHSA-78fp-cf4h-g36p.json
Attack Vector (AV) Attack Complexity (AC) Attack Requirements (AT) Privileges Required (PR) User Interaction (UI) Vulnerable System Impact Confidentiality (VC) Vulnerable System Impact Integrity (VI) Vulnerable System Impact Availability (VA) Subsequent System Impact Confidentiality (SC) Subsequent System Impact Integrity (SI) Subsequent System Impact Availability (SA)

network

adjacent

local

physical

low

high

none

present

none

low

high

none

passive

active

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

high

low

none

There are no SSVC decisions available.