---
cve: "CVE-2026-73481"
severity: "MEDIUM"
cvss: 5.3
epss: "0.1%"
vendor: "phplist"
kev: false
exploited: false
published: "2026-08-13 19:17:34"
tags: [cve, security, medium]
source: tsecurity.de CVE-Dossier
exported: "2026-09-29T04:09:56+02:00"
---

# CVE-2026-73481

> 5.3 MEDIUM · 🧪 PoC

## Beschreibung

phpList before 3.7.0-RC5 fail to enforce CSRF token validation on the bounce rule deletion endpoint (bouncerules.php / bouncerule.php). The deletion is performed via a GET request (?page=bouncerules&del=N), and the central CSRF check (verifyCsrfGetToken) is invoked with enforce=false, so it only validates the token when a 'tk' parameter is present. A remote attacker can trick an authenticated administrator into loading a crafted URL (e.g., embedded in an image tag) to delete arbitrary bounce rules from the phplist_bounceregex table without a valid CSRF token.

## CISA-Anreicherung (vulnrichment/ADP)

- CISA-SSVC (Coordinator, v2.0.3):
  - Exploitation: **poc**
  - Automatable: **no**
  - Technical Impact: **partial**

## CVSS-Vektor

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

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

## Patch verfügbar (OSV)

- f69dc97cd3a6705dffb2c7e6c8c5b534bac05e02 (Commit)
- 5159c3ed33a5674a8169472b50d146d97f630746 (Commit)

## Referenzen

- <https://github.com/phpList/phplist3/issues/1116>
- <https://github.com/phpList/phplist3/releases/tag/v3.7.0-RC5>
- <https://github.com/phpList/phplist3/pull/1121>
- <https://github.com/phpList/phplist3/commit/5159c3ed33a5674a8169472b50d146d97f630746>
- <https://www.vulncheck.com/advisories/phplist-rc5-cross-site-request-forgery-via-bounce-rules>

---
_Exportiert aus dem [tsecurity.de CVE-Dossier](https://tsecurity.de/cve?cve=CVE-2026-73481) · Datenquellen: EUVD (ENISA), NVD, OSV, CISA KEV, FIRST EPSS, Exploit-DB, BSI WID (CSAF)_