vllm up to 0.8.4 Multimodal Tokenizer redos

CVSS Meta Temp Score
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Current Exploit Price (≈)
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CTI Interest Score
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6.7$0-$5k0.00

Summaryinfo

A vulnerability marked as problematic has been reported in vllm up to 0.8.4. This affects an unknown part of the component Multimodal Tokenizer. This manipulation causes redos. This vulnerability appears as CVE-2025-46560. The attack may be initiated remotely. There is no available exploit. It is suggested to upgrade the affected component.

Detailsinfo

A vulnerability was found in vllm up to 0.8.4. It has been declared as critical. Affected by this vulnerability is an unknown code of the component Multimodal Tokenizer. The manipulation with an unknown input leads to a redos vulnerability. The CWE definition for the vulnerability is CWE-1333. The product uses a regular expression with an inefficient, possibly exponential worst-case computational complexity that consumes excessive CPU cycles. As an impact it is known to affect availability. The summary by CVE is:

vLLM is a high-throughput and memory-efficient inference and serving engine for LLMs. Versions starting from 0.8.0 and prior to 0.8.5 are affected by a critical performance vulnerability in the input preprocessing logic of the multimodal tokenizer. The code dynamically replaces placeholder tokens (e.g., , ) with repeated tokens based on precomputed lengths. Due to ​​inefficient list concatenation operations​​, the algorithm exhibits ​​quadratic time complexity (O(n²))​​, allowing malicious actors to trigger resource exhaustion via specially crafted inputs. This issue has been patched in version 0.8.5.

It is possible to read the advisory at github.com. This vulnerability is known as CVE-2025-46560 since 04/24/2025. The exploitation appears to be easy. The attack can be launched remotely. The technical details are unknown and an exploit is not publicly available. The attack technique deployed by this issue is T1449.003 according to MITRE ATT&CK.

Upgrading to version 0.8.5 eliminates this vulnerability.

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Productinfo

Name

Version

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 6.8
VulDB Meta Temp Score: 6.7

VulDB Base Score: 6.5
VulDB Temp Score: 6.2
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 7.5
NVD Vector: 🔍

CNA Base Score: 6.5
CNA Vector (GitHub_M): 🔍

CVSSv2info

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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Redos
CWE: CWE-1333 / CWE-400 / CWE-404
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Not defined

EPSS Score: 🔍
EPSS Percentile: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: vllm 0.8.5

Timelineinfo

04/24/2025 🔍
04/30/2025 +6 days 🔍
04/30/2025 +0 days 🔍
05/29/2025 +29 days 🔍

Sourcesinfo

Advisory: GHSA-vc6m-hm49-g9qg
Status: Confirmed

CVE: CVE-2025-46560 (🔍)
GCVE (CVE): GCVE-0-2025-46560
GCVE (VulDB): GCVE-100-306583

Entryinfo

Created: 04/30/2025 06:35
Updated: 05/29/2025 07:08
Changes: 04/30/2025 06:35 (64), 04/30/2025 12:37 (1), 05/29/2025 07:08 (11)
Complete: 🔍
Cache ID: 216::103

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