EUVD-2026-31145
GHSA-48m7-r7vc-4m4f
Severity by source
AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Primary rating from NVD · only source for this CVE.
CVSS VectorNVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:N
Lifecycle Timeline
1DescriptionCVE.org
ArcGIS Server contains an input validation weakness in the login redirection workflow. An Authenticated attacker could exploit this issue by sending a specially crafted request, Successful exploitation may result in the application redirecting the browser to an unintended, untrusted site, resulting in a limited confidentiality impact under specific user interaction conditions. The vulnerability affects only the client side navigation logic during authentication and remains confined to the same security boundary. No server side compromise or cross component impact is possible. This issue affects ArcGIS Server 11.5.
AnalysisAI
Open redirect vulnerability in ArcGIS Server 11.5 allows an attacker to craft a malicious login-workflow URL that, upon user authentication, silently redirects the victim's browser to an attacker-controlled external site. The flaw lies in insufficient input validation of the redirect parameter within the login redirection workflow, with impact explicitly limited to client-side browser navigation - no server-side compromise or cross-component data exposure is possible. No active exploitation has been confirmed (not in CISA KEV), no public exploit code has been identified at time of analysis, and EPSS data was not present in the available intelligence feed.
Technical ContextAI
This is a classic open redirect (matching CWE-601: URL Redirection to Untrusted Site pattern, despite CWE being listed as N/A in the NVD record) embedded in ArcGIS Server's authentication workflow - specifically the URL parameter controlling post-login browser navigation. ArcGIS Server is Esri's enterprise GIS platform for publishing and managing geospatial services; its login flow accepts a redirect target to return users to their intended destination after authentication, and failure to whitelist or sanitize that parameter is the root cause. The affected product is confirmed as Esri ArcGIS Server 11.5 via CPE cpe:2.3:a:esri:arcgis_server:*:*:*:*:*:*:*:* and EUVD-2026-31145. The CVSS Scope:Changed (S:C) value correctly reflects that impact crosses the ArcGIS security boundary into the user's browser context - redirecting to an external domain - even though no server-side component is compromised.
RemediationAI
Apply the remediation described in Esri's April 2026 Security Bulletin at https://www.esri.com/arcgis-blog/products/trust-arcgis/administration/april2026_security_bulletin. A specific patched build number beyond ArcGIS Server 11.5 was not confirmed in the available intelligence - consult the advisory directly for the exact version to deploy. As a compensating control prior to patching, configure a WAF or reverse proxy rule to reject or sanitize requests where the login redirect parameter contains an external (off-domain) URL; note this may break legitimate deep-link redirect flows and should be tested in staging before production deployment. A URL allowlist restricted to the organization's own ArcGIS Server hostnames is preferable to an outright block. Additionally, educating users to inspect ArcGIS login URLs for unexpected redirect parameters reduces the social-engineering attack surface without system-side trade-offs.
More in Open Redirect
View allA malicious third-party can give a crafted "ssh://..." URL to an unsuspecting victim, and an attempt to visit the URL ca
GFI Kerio Control versions 9.2.5 through 9.4.5 contain an HTTP response splitting vulnerability in the dest parameter of
PHP through 7.0.8 does not attempt to address RFC 3875 section 4.1.18 namespace conflicts and therefore does not protect
Multiple open redirect vulnerabilities in Apache Struts 2.0.0 through 2.3.15 allow remote attackers to redirect users to
Open redirect vulnerability in age-verification.php in the Age Verification plugin 0.4 and earlier for WordPress allows
Open redirect vulnerability in Kaseya Virtual System Administrator (VSA) 7.x before 7.0.0.29, 8.x before 8.0.0.18, 9.0 b
Vulnerability in the Oracle Applications Framework component of Oracle E-Business Suite (subcomponent: Popup windows (li
Unspecified vulnerability in the Oracle Application Server Single Sign-On component in Oracle Fusion Middleware 10.1.4.3
Flarum is open source discussion platform software. Rated medium severity (CVSS 6.5), this vulnerability is remotely exp
Open redirect vulnerability in Novius OS 5.0.1 (Elche) allows remote attackers to redirect users to arbitrary web sites
Open redirect vulnerability in the Redirect function in stageshow_redirect.php in the StageShow plugin before 5.0.9 for
Nteract v.0.28.0 was discovered to contain a remote code execution (RCE) vulnerability via the Markdown link. Rated crit
Share
External POC / Exploit Code
Leaving vuln.today