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CVE-2026-126395

vLLM 0.14.0rc1 before 0.31.0 Heap Address Disclosure via sanitize_message()

Severity
Medium 6.9
Published
13 Nov 2026
Last changed
13 Nov 2026
Added to UpHeron
13 Nov 2026
Fixed in
0.31.0
Weakness
Sensitive information in log files (CWE-532)
Attack
Over the network · No login needed · No user action needed
Attacker can
Read some data
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Sources
CVE Program

Description

vLLM from 0.14.0rc1 before 0.31.0 contains an information disclosure vulnerability in sanitize_message() whose lowercase-only regex fails to scrub uppercase PIL image addresses. Unauthenticated attackers can send a crafted PNG to endpoints such as /tokenize, triggering HF-processor errors that leak live server heap addresses useful for ASLR bypass.

From the CVE Program.

Affected software

SoftwareAffected versions
vLLMServers and applications · cna:vllm-project|vllm
  • From 0.14.0rc1 before 0.31.0

References

  • CVE.org https://www.cve.org/CVERecord?id=CVE-2026-126395