Input validation error in devalue - #VU151493
Published: September 21, 2026
Vulnerability identifier: #VU151493
CSH Severity: Medium
CVSS v4: 6.9 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: N/A
CWE-ID: CWE-20
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to create objects with a __proto__ own property.
The vulnerability exists due to improper handling of property-key coercion in the parse function when parsing malformed serialized payloads. A remote attacker can supply a malformed serialized payload to create objects with a __proto__ own property.
Affected software
devalue
Remediation
Install security update from vendor's website.
devalue - update to 5.9.3