CVE-2026-13163: Mailerup 0 to before 1.0.1

CVE-2026-13163. EPSS 0.0051 (percentile 0.4263), scored 22-Oct-2026.

Affected technology

Mailerup · 0 to before 1.0.1
Mailerup

Component: Not specified by the source

Attack conditions (Source advisory, CVSS 4.0): Network (remote) · No privileges required · Passive user interaction

What an attacker can do

Remote unauthenticated attackers can redirect victims to arbitrary external sites and conduct phishing attacks via a crafted u query parameter, because the URL scheme is validated (blocking javascript: and data:) but the destination host is not restricted to an allowlist, and a signing.BadSignature exception is silently caught so a valid signed token is not required. Source advisory’s CVSS 4.0 assessment (base score 5.3/10) rates confidentiality, integrity and availability impact as none.

Published 24-Oct-2026 15:09 UTC

CWE: CWE-601
CCR priority: 0.1 /100 (P5)
EPSS: 0.0051 · percentile 0.42688 · 2026-10-24
KEV: no

Provenance

FIRST EPSS daily exploit-probability · Source record · observed 2026-10-24 15:09:16.138216+00:00 UTC
NVD CVE API 2.0 · Source record · observed 2026-10-24 15:07:27.951960+00:00 UTC

Stable permalink: https://cybercodered.org/item/cve-cve-2026-13163.html