Use of cache containing sensitive information in TerriaJS-Server - CVE-2026-77626
Published: September 15, 2026
Vulnerability identifier: #VU149915
CSH Severity: Medium
CVSS v4: 8.2 [CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N]
CVE-ID: CVE-2026-77626
CWE-ID: CWE-524
Exploitation vector: Remote access
Exploit availability:
No public exploit available
Vulnerability details
The vulnerability allows a remote attacker to disclose auth-gated upstream content.
The vulnerability exists due to improper cache-control configuration in the /proxy endpoint when a shared cache stores responses to proxied requests without varying by authorization. A remote attacker can request a proxied URL whose authenticated response has been cached to disclose auth-gated upstream content.
A shared cache or CDN in front of the server is required.
Affected software
TerriaJS-Server
How to mitigate CVE-2026-77626
Install security update from vendor's website.
TerriaJS-Server - update to 5.0.0