CVE-2023-6337

Vault May be Vulnerable to a Denial of Service Through Memory Exhaustion When Handling Large HTTP Requests

HIGH
7.5
CVSS Score
Published: December 8, 2023 at 09:12 PM UTC
Updated: June 17, 2026 at 06:50 AM UTC
1 product affected across 1 vendorVault

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Severity
HIGH7.5
Exploit prediction
EPSS 0.8%

Description

HashiCorp Vault and Vault Enterprise 1.12.0 and newer are vulnerable to a denial of service through memory exhaustion of the host when handling large unauthenticated and authenticated HTTP requests from a client. Vault will attempt to map the request to memory, resulting in the exhaustion of available memory on the host, which may cause Vault to crash. Fixed in Vault 1.15.4, 1.14.8, 1.13.12.

Affected

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v ≤ 1.12.01.12.0 ≤ v < 1.15.41.13.0 ≤ v < 1.13.121.14.0 ≤ v < 1.14.81.15.0 ≤ v < 1.15.41.12.0
Affected range stops below 1.13.12, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.14.8, so it looks safe — our inference, not a vendor statement
Affected range stops below 1.15.4, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

CVSS

7.5HIGHHashiCorp
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusMODIFIED
CWE
CWE-770

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