CVE-2026-33320

Dasel is a command-line tool and library for querying, modifying, and transforming data structures. Starting in version 3.0.0 and prior to version 3.3.1, Dasel's YAML reader allows an attacker who can supply YAML for processing to trigger extreme CPU and memory consumption. The issue is in the library's own `UnmarshalYAML` implementation, which manually resolves alias nodes by recursively following `yaml.Node.Alias` pointers without any expansion budget, bypassing go-yaml v4's built-in alias expansion limit. Version 3.3.2 contains a patch for the issue.

CVSS v3 6.2 MEDIUM

6.2^/10

CVSS v3 : MEDIUM

Vector :

Exploitability : 2.5 / Impact : 3.6

Attack Vector LOCAL

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact NONE

Integrity Impact NONE

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://github.com/TomWright/dasel/security/advisories/GHSA-4fcp-jxh7-23x8	Exploit Mitigation Vendor Advisory

Configurations

Configuration 1 (hide)

cpe:2.3:a:tomwright:dasel:*:*:*:*:*:go:*:*

History

No history.

Information

Published : 2026-03-24 01:17

Updated : 2026-03-25 16:08

NVD link : CVE-2026-33320

Mitre link : CVE-2026-33320

CVE.ORG link : CVE-2026-33320

JSON object : View

Products Affected

tomwright

dasel

CWE

CWE-674

Uncontrolled Recursion

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