GHSA-78fp-cf4h-g36p: Duplicate Advisory VLLM Introduced Enhanced Protection For Vulnerability

HIGH
Share
CVSS 8.8
CWE-787 CWE-20
Published
Advisory Summary

GHSA-78fp-cf4h-g36p is a HIGH (CVSS 8.8) vllm introduced enhanced protection for vulnerability (CWE-787: Out-of-bounds Write) affecting Duplicate Advisory libraries in the PyPI ecosystem. The issue involves vllm introduced enhanced protection for cve-2025-62164. Remediation is available by upgrading affected packages to version 0.13.0.

GHSA-78fp-cf4h-g36p at a Glance

CVE Identifier N/A
GHSA Identifier GHSA-78fp-cf4h-g36p
Severity HIGH
CVSS v3.1 Base Score 8.8
CWE Classification CWE-787: Out-of-bounds Write
Affected Product Duplicate Advisory
Package Ecosystem PyPI
Published Date
Last Updated

Security Impact

CVSS: 8.8

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction None (UI:N)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity High (I:H)
Availability High (A:H)

How to Fix GHSA-78fp-cf4h-g36p

To remediate this vulnerability, upgrade all affected Duplicate Advisory dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

vllm fixed: 0.13.0 
pip install vllm>=0.13.0
Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

pip show vllm

How to Check if You Are Affected

To determine whether your Python environment is affected by GHSA-78fp-cf4h-g36p, inspect your installed packages using pip:

pip show vllm

Analyze the terminal output to locate any version of Duplicate Advisory in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than 0.13.0), your application is affected.

Note: The pip show vllm command checks currently installed packages in your active Python environment.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-787: Out-of-bounds Write, where the product writes data past the end, or before the beginning, of the intended buffer. In Duplicate Advisory, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

### 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.

GHSA-78fp-cf4h-g36p Affected Duplicate Advisory Versions

1 component(s)
Fixed Versions:
0.13.0
Product / Package Ecosystem Affected Versions Fixed Version
vllm
pypi/vllm
PyPI
≥ 0.10.2
< 0.13.0
0.13.0

References

GitHub Advisory / Wiki ADVISORY
https://github.com/vllm-project/vllm/security/advisories/GHSA-mcmc-2m55-j8jj
NVD — GHSA-78fp-cf4h-g36p NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-56340
Duplicate Advisory Security Information SECURITY
https://access.redhat.com/security/cve/CVE-2026-56340
bugzilla.redhat.com/show_bug.cgi WEB
https://bugzilla.redhat.com/show_bug.cgi?id=2491060
Duplicate Advisory Source Repository REPOSITORY
https://github.com/vllm-project/vllm
Duplicate Advisory Security Information SECURITY
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56340.json
www.vulncheck.com/advisories/vllm-den... WEB
https://www.vulncheck.com/advisories/vllm-denial-of-service-via-unvalidated-multimodal-embeddings

Frequently Asked Questions

What is GHSA-78fp-cf4h-g36p?
GHSA-78fp-cf4h-g36p is a security vulnerability in Duplicate Advisory involving vLLM introduced enhanced protection for CVE-2025-62164 under CWE-787: Out-of-bounds Write.
Which Duplicate Advisory versions are affected?
Affected versions include releases prior to 0.13.0 across affected packages: vllm.
What version fixes GHSA-78fp-cf4h-g36p?
Upgrading to 0.13.0 (or the latest patched release for your respective branch) resolves the vulnerability.
Is vllm affected?
Yes, vllm is affected in releases prior to 0.13.0. Upgrade your dependency to 0.13.0 or later.
What is the CVSS score of GHSA-78fp-cf4h-g36p?
GHSA-78fp-cf4h-g36p has a CVSS v3.1 base score of 8.8 (HIGH) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
What CWE is associated with GHSA-78fp-cf4h-g36p?
GHSA-78fp-cf4h-g36p is classified under CWE-787: Out-of-bounds Write (The product writes data past the end, or before the beginning, of the intended buffer.).
How can I check PyPI dependencies for GHSA-78fp-cf4h-g36p?
Run the dependency tree command: 'pip show vllm'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-78fp-cf4h-g36p",
  "modified" : "2026-09-11T19:18:42Z",
  "published" : "2026-06-20T21:31:21Z",
  "withdrawn" : "2026-09-11T19:18:42Z",
  "aliases" : [ ],
  "summary" : "Duplicate Advisory: vLLM introduced enhanced protection for CVE-2025-62164",
  "details" : "### Duplicate Advisory\n\nThis advisory has been withdrawn because it is a duplicate of GHSA-mcmc-2m55-j8jj. This link is maintained to preserve external references.\n\n### Original Description\n\nvLLM 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.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"
  }, {
    "type" : "CVSS_V4",
    "score" : "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"
  } ],
  "affected" : [ {
    "package" : {
      "ecosystem" : "PyPI",
      "name" : "vllm"
    },
    "ranges" : [ {
      "type" : "ECOSYSTEM",
      "events" : [ {
        "introduced" : "0.10.2"
      }, {
        "fixed" : "0.13.0"
      } ]
    } ]
  } ],
  "references" : [ {
    "type" : "WEB",
    "url" : "https://github.com/vllm-project/vllm/security/advisories/GHSA-mcmc-2m55-j8jj"
  }, {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-56340"
  }, {
    "type" : "WEB",
    "url" : "https://access.redhat.com/security/cve/CVE-2026-56340"
  }, {
    "type" : "WEB",
    "url" : "https://bugzilla.redhat.com/show_bug.cgi?id=2491060"
  }, {
    "type" : "PACKAGE",
    "url" : "https://github.com/vllm-project/vllm"
  }, {
    "type" : "WEB",
    "url" : "https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-56340.json"
  }, {
    "type" : "WEB",
    "url" : "https://www.vulncheck.com/advisories/vllm-denial-of-service-via-unvalidated-multimodal-embeddings"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-20", "CWE-787" ],
    "severity" : "HIGH",
    "github_reviewed" : true,
    "github_reviewed_at" : "2026-09-11T19:18:42Z",
    "nvd_published_at" : "2026-06-20T19:16:23Z"
  }
}