CVE-2026-90713

vllm-project vLLM tiktoken vocab File mod.rs new denial of service

Published Sep 14, 2026 CVSS 4.0 · 4.8 Medium EPSS < 1% KEV · Not listed

Description

A security flaw has been discovered in vllm-project vLLM up to 0.29.0. The affected element is the function TiktokenTokenizer::new of the file rust/src/text/src/backend/hf/mod.rs of the component tiktoken vocab File Handler. The manipulation results in denial of service. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

vllm-project

vLLM

affected

Version	Status	Constraints
`0.1`	affected	—
`0.2`	affected	—
`0.3`	affected	—
`0.4`	affected	—
`0.5`	affected	—
`0.6`	affected	—
`0.7`	affected	—
`0.8`	affected	—
`0.9`	affected	—
`0.10`	affected	—
`0.11`	affected	—
`0.12`	affected	—
`0.13`	affected	—
`0.14`	affected	—
`0.15`	affected	—
`0.16`	affected	—
`0.17`	affected	—
`0.18`	affected	—
`0.19`	affected	—
`0.20`	affected	—
`0.21`	affected	—
`0.22`	affected	—
`0.23`	affected	—
`0.24`	affected	—
`0.25`	affected	—
`0.26`	affected	—
`0.27`	affected	—
`0.28`	affected	—
`0.29.0`	affected	—

No data.

Vendor Product Versions

Vllm-project

Vllm

Version	Status	Scheme	Platform
`0.1`	affected	generic	—
`0.2`	affected	generic	—
`0.3`	affected	generic	—
`0.4`	affected	generic	—
`0.5`	affected	generic	—
`0.6`	affected	generic	—
`0.7`	affected	generic	—
`0.8`	affected	generic	—
`0.9`	affected	generic	—
`0.10`	affected	generic	—
`0.11`	affected	generic	—
`0.12`	affected	generic	—
`0.13`	affected	generic	—
`0.14`	affected	generic	—
`0.15`	affected	generic	—
`0.16`	affected	generic	—
`0.17`	affected	generic	—
`0.18`	affected	generic	—
`0.19`	affected	generic	—
`0.20`	affected	generic	—
`0.21`	affected	generic	—
`0.22`	affected	generic	—
`0.23`	affected	generic	—
`0.24`	affected	generic	—
`0.25`	affected	generic	—
`0.26`	affected	generic	—
`0.27`	affected	generic	—
`0.28`	affected	generic	—
`0.29.0`	affected	generic	—

Remediation

No solution or workaround provided in the CVE record

Tracking

Advisories

No advisories available

Metrics

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact None

Vulnerable System Integrity Impact None

Vulnerable System Availability Impact Low

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Attack Vector Local

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact Low

User Interaction None

Access Vector Local

Access Complexity Low

Authentication Single

Confidentiality Impact None

Integrity Impact None

Availability Impact Partial

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.160% probability within 30 days)

Exploitation poc

Automatable no

Technical Impact partial

References

Link	Providers
https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8
https://github.com/vllm-project/vllm/
https://github.com/vllm-project/vllm/issues/50954
https://github.com/vllm-project/vllm/pull/51135
https://nvd.nist.gov/vuln/detail/CVE-2026-90713
https://vuldb.com/cve/CVE-2026-90713
https://vuldb.com/submit/918762
https://vuldb.com/vuln/403267
https://vuldb.com/vuln/403267/cti
https://www.cve.org/CVERecord?id=CVE-2026-90713

History

Sep 15, 2026 3:30 PM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Sep 15, 2026 12:15 PM Weaknesses updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Weaknesses		CWE-770
References		https://nvd.nist.gov/vuln/detail/CVE-2026-90713 https://www.cve.org/CVERecord?id=CVE-2026-90713
Metrics	threat_severity `None`	threat_severity `Low`

Sep 14, 2026 12:30 PM Description updated. Title updated. First appearance in the feed. Weaknesses updated. Affected versions updated. Affected vendors updated. Added references. Scoring metrics updated View changes

Type	Values Removed	Values Added
Description		A security flaw has been discovered in vllm-project vLLM up to 0.29.0. The affected element is the function TiktokenTokenizer::new of the file rust/src/text/src/backend/hf/mod.rs of the component tiktoken vocab File Handler. The manipulation results in denial of service. The attack is only possible with local access. The exploit has been released to the public and may be used for attacks. The pull request to fix this issue awaits acceptance.
Title		vllm-project vLLM tiktoken vocab File mod.rs new denial of service
First Time appeared		Vllm-project Vllm-project vllm
Weaknesses		CWE-404
CPEs		cpe:2.3:a:vllm-project:vllm::::::::
Vendors & Products		Vllm-project Vllm-project vllm
References		https://gist.github.com/Yunzez/4b08ec3568a8cbfb120062e2558382b8 https://github.com/vllm-project/vllm/ https://github.com/vllm-project/vllm/issues/50954 https://github.com/vllm-project/vllm/pull/51135 https://vuldb.com/cve/CVE-2026-90713 https://vuldb.com/submit/918762 https://vuldb.com/vuln/403267 https://vuldb.com/vuln/403267/cti
Metrics		cvssV2_0 `{'score': 1.7, 'vector': 'AV:L/AC:L/Au:S/C:N/I:N/A:P/E:POC/RL:ND/RC:UR'}` cvssV3_0 `{'score': 3.3, 'vector': 'CVSS:3.0/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}` cvssV3_1 `{'score': 3.3, 'vector': 'CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L/E:P/RL:X/RC:R'}` cvssV4_0 `{'score': 4.8, 'vector': 'CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:P'}`