A AegiFlow
MEDIUMCVSS 5.3EPSS 0.3%

CVE-2026-116583

CVE-2026-116583 updated by NVD

Published
2026-10-28
Modified
2026-10-29
EPSS percentile
19%
Sources
github-advisory, nvd

Summary

Seroval facilitates JavaScript value stringification, including complex structures beyond JSON.stringify capabilities. From 1.6.0 until 1.6.11, the JavaScript-output APIs derive a typed array's constructor name from a property on the value that can be replaced by an own constructor property. When application code copies untrusted properties onto a typed array and then passes it to serialize, serializeAsync, crossSerialize, crossSerializeAsync, crossSerializeStream, Serializer, or compileJSON, the attacker-controlled name is written as executable JavaScript and can run in the page receiving the output. This issue is fixed in version 1.6.11.

Affected packages

EcosystemPackageAffected versionsFixed versions
npmseroval—1.6.11

Remediation: Upgrade to 1.6.11 or later.

References

Includes data from the GitHub Advisory Database, licensed under CC-BY 4.0.

Includes data from the National Vulnerability Database (NIST). NVD data is in the public domain; this page is not endorsed by NIST.

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EPSS scores provided by the FIRST.org Exploit Prediction Scoring System.