Reversible One-Way Hash in vLLM - CVE-2025-25183
Published: February 6, 2025 / Updated: May 1, 2026
Vulnerability identifier: #VU128752
CSH Severity: Low
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:P/PR:L/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N/E:U/U:Clear
CVE-ID: CVE-2025-25183
CWE-ID: CWE-328
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: vLLM
Affected software:
vLLM
vLLM
Detailed vulnerability description
The vulnerability allows a remote user to interfere with subsequent responses.
The vulnerability exists due to predictable hash collisions in the prefix cache when processing maliciously constructed prompts. A remote user can intentionally populate the cache with a colliding prompt to interfere with subsequent responses.
User interaction is required.
How to mitigate CVE-2025-25183
Install security update from vendor's website.