SB2026091506 - Multiple vulnerabilities in TerriaJS-Server

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Main Vulnerability Database SB2026091506

SB2026091506 - Multiple vulnerabilities in TerriaJS-Server

Published: September 15, 2026

Security Bulletin ID SB2026091506
CSH Severity
Medium
Patch available
YES
Number of vulnerabilities 4
Exploitation vector Remote access
Highest impact Information disclosure

Breakdown by Severity

Medium 50% Low 50%
  • Low
  • Medium
  • High
  • Critical

Description

This security bulletin contains information about 4 vulnerabilities.


1) Cross-site request forgery (CVE-ID: CVE-2026-77628)

CWE-ID: CWE-352 - Cross-Site Request Forgery (CSRF)

CVSSv4: 1.8 [CVSS:4.0/AV:L/AC:L/AT:P/PR:N/UI:A/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N]


The vulnerability allows a remote attacker to perform unauthorized state-changing actions.

The vulnerability exists due to missing cross-site request forgery protection in the /share, /feedback, and /esri-token-auth endpoints when processing cross-origin browser requests. A remote attacker can cause the victim's browser to send crafted cross-origin requests to perform unauthorized state-changing actions.

Exploitation requires the victim to visit an attacker-controlled web page and a deployment that authenticates by network position or ambient authority. Responses cannot be read cross-origin.


2) Open redirect (CVE-ID: CVE-2026-77627)

CWE-ID: CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')

CVSSv4: 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]


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.


3) Use of cache containing sensitive information (CVE-ID: CVE-2026-77626)

CWE-ID: CWE-524 - Use of Cache Containing Sensitive Information

CVSSv4: 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]


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.


4) Cross-site scripting (CVE-ID: CVE-2026-77636)

CWE-ID: CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

CVSSv4: 5.1 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N]


The vulnerability allows a remote attacker to execute arbitrary script in a victim's browser.

The vulnerability exists due to improper content-type handling in the gist-backed share resolver when a browser directly navigates to a raw share endpoint. A remote attacker can host crafted markup in a public gist and distribute its share URL to execute arbitrary script in a victim's browser.

User interaction is required to open the crafted URL, and only deployments configured with a gist-backed share URL prefix are affected.


Remediation

Install update from vendor's website.

References