---
cve: "CVE-2026-76635"
severity: "HIGH"
cvss: 8.6
epss: "0.4%"
vendor: "baserproject"
kev: false
exploited: false
published: "2026-08-20 14:17:59"
tags: [cve, security, high]
source: tsecurity.de CVE-Dossier
exported: "2026-09-24T08:26:02+02:00"
---

# CVE-2026-76635

> 8.6 HIGH · 🧪 PoC

## Beschreibung

baserCMS before 5.3.0 contains a SQL injection vulnerability in BcDatabaseService.php that allows authenticated administrators to inject attacker-controlled table names and configuration values directly into SQL statements across sequence update, CSV export, and table management operations. Attackers can chain a backup restore code injection flaw, where PHP code outside class definitions in schema files executes unconditionally upon loading, to plant malicious table names and trigger error-based SQL injection that retrieves database version, schema contents, and arbitrary data from the PostgreSQL backend.

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- ef5ee92e5a2952e46874f12afbfee12f98f933bb (Commit)

## Referenzen

- <https://github.com/baserproject/basercms/security/advisories/GHSA-cg65-f2m7-9fqj>
- <https://github.com/baserproject/basercms/releases/tag/5.3.0>
- <https://www.vulncheck.com/advisories/basercms-sql-injection-and-code-injection-via-bcdatabaseservice-php>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-76635) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI BITS_