GHSA-66fc-rw6m-c2q6 · Severity: high · Ecosystem: npm — Seroval affected by Denial of Service via Array serialization
seroval facilitates JS value stringification, including complex structures beyond JSON.stringify capabilities. In versions 1.4.0 and below, overriding encoded array lengths by replacing them with an excessively large value causes the deserialization process to significantly increase processing time. This issue has been fixed in version 1.4.1.
Conclusion & alert: CVE-2026-23957 is rated Low Risk (32.6/100): CVSS High severity, with low exploitation likelihood (EPSS 0.03%). Mandatory action: Monitor for updates and reassess as exploit intelligence or EPSS changes.
Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.
EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).
| # | Date | Old EPSS score | New EPSS score | Delta (New - Old) |
|---|---|---|---|---|
| 1 | 2026-03-21 | 0.05% | 0.03% | -0.02% |
| 2 | 2026-02-23 | 0.04% | 0.05% | +0.02% |
| 3 | 2026-01-22 | — | 0.04% | — |
Full EPSS history (3 records total)
CVSS metrics for this CVE.
| Base score | Version | Severity | Vector | Exploitability | Impact | Score source |
|---|---|---|---|---|---|---|
| 7.5 | 3.1 | HIGH |
|
3.9 | 3.6 | [email protected] |
GHSA-66fc-rw6m-c2q6 · Severity: high · Ecosystem: npm — Seroval affected by Denial of Service via Array serialization
| vendor | priority | summary | link |
|---|---|---|---|
redhat
|
high | — | https://access.redhat.com/security/cve/CVE-2026-23957 |
| URL | Tags |
|---|---|
| https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060 | Patch |
| https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-66fc-rw6m-c2q6 | Mitigation Vendor Advisory |