Open redirect in TerriaJS-Server - CVE-2026-77627
Published: September 15, 2026
Vulnerability identifier: #VU149914
CSH Severity: Low
CVSS v4: 2.1 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-77627
CWE-ID: CWE-601
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to redirect victims to an attacker-controlled site.
The vulnerability exists due to improper validation of redirect targets in the redirectToHttps HTTP-to-HTTPS redirect middleware when processing requests with attacker-controlled Host headers. A remote attacker can send a request with a crafted Host header to poison a shared cache with a malicious redirect.
Exploitation requires a shared cache or CDN that caches 301 responses by path without including Host in its cache key.
Affected software
TerriaJS-Server
How to mitigate CVE-2026-77627
Install security update from vendor's website.
TerriaJS-Server - update to 5.0.0