---
cve: "CVE-2026-23957"
severity: "HIGH"
cvss: 7.5
epss: "0.4%"
vendor: "lxsmnsyc"
kev: false
exploited: false
published: "2026-01-22 02:15:52"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-10-03T08:30:10+02:00"
---

# CVE-2026-23957

> 7.5 HIGH · 🧪 PoC

## Beschreibung

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.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **none**
  - Automatable: **yes**
  - Technical Impact: **partial**

## CVSS-Vektor

```
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |
| S Scope | Unverändert | good |
| C Vertraulichkeit | Keine | good |
| I Integrität | Keine | good |
| A Verfügbarkeit | Hoch | bad |

## Patch verfügbar (OSV)

- ce9408ebc87312fcad345a73c172212f2a798060 (Commit)

## Referenzen

- <https://github.com/lxsmnsyc/seroval/security/advisories/GHSA-66fc-rw6m-c2q6>
- <https://github.com/lxsmnsyc/seroval/commit/ce9408ebc87312fcad345a73c172212f2a798060>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-23957) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_