Deserialization of Untrusted Data in Serialize-javascript - #VU128354
Published: April 28, 2026
Vulnerability identifier: #VU128354
CSH Severity: High
CVSS v4.0: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber
CVE-ID: N/A
CWE-ID: CWE-502
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vendor: Yahoo
Affected software:
Serialize-javascript
Serialize-javascript
Detailed vulnerability description
The vulnerability allows a remote attacker to execute arbitrary code on the target system.
The vulnerability exists due to insecure input validation when processing serialized data passed via RegExp.flags and Date.prototype.toISOString(). A remote attacker can pass specially crafted data to the application and execute arbitrary code on the target system.
Note, the vulnerability exists due to incomplete fix for #VU86835 (CVE-2020-7660).
Remediation
Install updates from vendor's website.