---
cve: "CVE-2026-83530"
severity: "MEDIUM"
cvss: 6.9
epss: "21%"
vendor: "Google"
kev: false
exploited: false
published: "2026-09-09 15:17:12"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-17T07:46:20+02:00"
---

# CVE-2026-83530

> 6.9 MEDIUM · 🧪 PoC

## Beschreibung

A user could provide an expression whose string length is longer than the ParserExpressionSizeLimit() configured on the CEL environment, and a memory allocation would occur proportional to the size of the input before the limit would be checked / enforced.

## CVSS-Vektor

```
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N
```

| Metrik | Wert | Bewertung |
|---|---|---|
| AV Angriffsvektor | Netzwerk | bad |
| AC Komplexität | Gering | bad |
| PR Privilegien | Keine | bad |
| UI Interaktion | Keine | bad |

## Patch verfügbar (OSV)

- fa16799e423d709cfb1a20c10c1db7dc6e640e55 (Commit)

## Referenzen

- <https://github.com/cel-expr/cel-go/pull/1302>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-83530) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_