JavaScript Value Stringification Vulnerability in Seroval by lxsmnsyc
CVE-2026-116583

5.3MEDIUM

Key Information:

Vendor

Lxsmnsyc

Status
Seroval
Vendor
CVE Published:
26 October 2026

What is CVE-2026-116583?

Seroval versions 1.6.0 to 1.6.10 contain a vulnerability where the JavaScript output APIs allow an attacker to control the typed array's constructor name through untrusted property manipulation. This can lead to executable JavaScript being inserted into the output, which may be executed in the context of the receiving page. Users are strongly advised to upgrade to version 1.6.11, where this security issue has been addressed.

Affected Version(s)

seroval >= 1.6.0, < 1.6.11

References

https://github.com/lxsmnsyc/seroval/security/advisories/G...
x_refsource_CONFIRM
https://github.com/lxsmnsyc/seroval/commit/1313ebbad9687b...
x_refsource_MISC
https://github.com/lxsmnsyc/seroval/releases/tag/seroval@...
x_refsource_MISC

CVSS V4

Score:
5.3
Severity:
MEDIUM
Confidentiality:
None
Integrity:
None
Availability:
None
Attack Vector:
Network
Attack Complexity:
High
Attack Required:
Physical
Privileges Required:
Undefined
User Interaction:
Unknown

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.