gcdRadar
archive/Patch now/AIR-2026-1949
closedclosed 13 Nov 2026Patch now2 Disclosed vulnerabilityAI

CVE-2026-126395: vLLM information disclosure vulnerability in sanitize_message()

vLLM

An information disclosure flaw in vLLM allows unauthenticated attackers to leak server heap addresses via crafted PNG inputs. A fixed release is available in version 0.31.0.

why this severityDisclosed vulnerability with a patch and no confirmed exploitation.

disclosed CVENo confirmed exploitation, so this record is tracked as a disclosed vulnerability and not counted as an incident. It moves into the counts if CISA or the vendor confirms exploitation. Why

CVSS
6.9
EPSS
<0.01 · top 67% · 2026-11-13
EPSS scores by FIRST
fix status
Patched
affected
vLLM 0.14.0rc1 to 0.30.9
fixed in
vLLM 0.31.0
first report
13 Nov 2026
last update
13 Nov 2026
CVE ids
CVE-2026-126395other records

What to do

Update vLLM to version 0.31.0 or later.

Timeline · 1

  1. 13 Nov 2026CVE-2026-126395: vLLM from 0.14.0rc1 before 0.31.0 contains an information disclosure vulnerability in sanitize_message() whose lowercase-only…

Sources · 1

Advisories and databases

  1. 2026-11-13
    CVE-2026-126395: vLLM from 0.14.0rc1 before 0.31.0 contains an information disclosure vulnerability in sanitize_message() whose lowercase-only…
    NVD · nvd.nist.gov/vuln/detail/CVE-2026-126395

Titles and links belong to their publishers. The summary above is written by gcdRadar in its own words; data is CC BY-SA 4.0.

Classification

lane
Patch now
AI role
Attack on AI
categories
Infrastructure vulnerability
severity
2 · Disclosed vulnerability
fix status
Patched
targets
Framework / tooling
owasp llm top 10
LLM03:2025 Supply Chain
mitre atlas
no technique for these categories
tags
information-disclosureaslr-bypass
dates
happened 13 Nov 2026 · first reported 13 Nov 2026
origin
NVD
Vulnerability record from NVD / the GitHub Advisory Database. This product uses the NVD API but is not endorsed or certified by the NVD.
record
confidence 0.90 · created 2026-11-13 11:16Z · updated 2026-11-13 11:16Z

Lane, AI role, categories and severity come from the classifier; the OWASP and ATLAS rows are derived from the categories. How these are assigned

Copy a brief

This record as a short Markdown brief, for a ticket, a chat or a coding agent.

the brief as text
# CVE-2026-126395: vLLM information disclosure vulnerability in sanitize_message()

https://gcdradar.vercel.app/incidents/cve-2026-126395-vllm-information-disclosure-vulnerability-in · AIR-2026-1949 · closed 2026-11-13

- Lane: Patch now
- Severity: 2 (Disclosed vulnerability): Disclosed vulnerability with a patch and no confirmed exploitation.
- Fix status: Patched
- First reported: 2026-11-13
- AI role: Attack on AI
- Products: vLLM
- CVE ids: CVE-2026-126395
- CVSS: 6.9

## Summary

An information disclosure flaw in vLLM allows unauthenticated attackers to leak server heap addresses via crafted PNG inputs. A fixed release is available in version 0.31.0.

## What to do

Update vLLM to version 0.31.0 or later.

## Affected and fixed versions

- Affected: vLLM 0.14.0rc1 to 0.30.9
- Fixed in: vLLM 0.31.0

## Latest updates

- 2026-11-13: CVE-2026-126395: vLLM from 0.14.0rc1 before 0.31.0 contains an information disclosure vulnerability in sanitize_message() whose lowercase-only… (https://nvd.nist.gov/vuln/detail/CVE-2026-126395)

## Sources

- 2026-11-13 NVD: CVE-2026-126395: vLLM from 0.14.0rc1 before 0.31.0 contains an information disclosure vulnerability in sanitize_message() whose lowercase-only… https://nvd.nist.gov/vuln/detail/CVE-2026-126395

Verify against the vendor's advisory before changing production. Data CC BY-SA 4.0, https://gcdradar.vercel.app.

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