GHSA-C3MW-737P-C7G2 Jupyter Server: 5xx request logging leaks token-bearing Referer header values

Summary When a request returns a 500, jupyterserver/log.py logs a small JSON block of request headers. The Referer header was copied into it as-is, so a token in the Referer URL ended up in the logs in plain text. Impact Anyone who can read the server logs can pick tokens out of these 500 entries...

CVE-2026-86049 Jupyter Server: 5xx request logging leaks token-bearing Referer header values

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

CVE-2026-86049 Jupyter Server: 5xx request logging leaks token-bearing Referer header values

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

CVE-2026-86049 Jupyter Server: 5xx request logging leaks token-bearing Referer header values

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

CVE-2026-86049

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

EUVD-2026-82436

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

CVE-2026-86049

Jupyter Server (the backend for Jupyter web applications) prior to version 2.21.0 contains a token-leak flaw in the 5xx request logging path within jupyter_server/log.py. The Referer header is copied into a JSON header block without applying the same token scrubbing used for the request URI. When...

EUVD-2026-65216

Grav: Origin validation bypass in Uri::referrer and Pages::referrerRoute via unanchored prefix match...

GHSA-9CCQ-2JFG-QW33 Grav: Origin validation bypass in Uri::referrer() and Pages::referrerRoute() via unanchored prefix match

Summary Grav\Common\Uri::referrer and Grav\Common\Page\Pages::referrerRoute both check whether an incoming request's Referer header "came from our site" using strstartswith$referrer, $base, where $base is the site's own absolute root URL for example https://example.com, no trailing slash. Because...

CVE-2026-86049: Insertion of Sensitive Information into Log File

Jupyter Server is the backend for Jupyter web applications. Prior to version 2.21.0, the 5xx request logging path in jupyterserver/log.py copies the Referer header into a JSON header block without applying the token scrubbing used for the request URI. A request that returns HTTP 500 while the...

PT-2026-95109

Name of the Vulnerable Software and Affected Versions Jupyter Server versions prior to 2.21.0 Description In the 5xx request logging path within jupyter server/log.py, the Referer header is copied into a JSON header block without applying the token scrubbing typically used for the request URI. Wh...

Astra Linux – Vulnerability in curl

curl 7.1.1 up to and including 7.75.0 is vulnerable to a “Exposure of Private Personal Information to an Unauthorized Actor” by leaking credentials in the HTTP Referer: header. libcurl does not remove user credentials from the URL when automatically filling in the Referer: HTTP request header fie...

EUVD-2026-76740

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be...

CVE-2026-90453

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be...

CVE-2026-90453 Open Redirect in Malcolm

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be...

CVE-2026-90453 Open Redirect in Malcolm

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be...

CVE-2026-90453 Open Redirect in Malcolm

A file-upload handler redirects the authenticated client's browser to a URL taken directly from that same request's Referer header, without validating it against the application's own origin. This allows an authenticated attacker to craft a request that causes another user's browser to be...

CVE-2026-90453

CVE-2026-90453 affects a file-upload handler that redirects an authenticated client's browser to a URL taken directly from the request's Referer header , without validating it against the application's own origin. An authenticated attacker can craft a request that causes another user's browser to...

CVE-2026-89239

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a reflected cross-site scripting vulnerability in the showAlertMessage function that inserts the raw Referer header into a JavaScript comment without encoding. Attackers can craft a Referer header containing / to close t...

CVE-2026-89239 WWBN AVideo Reflected XSS via Referer Header Comment Breakout

WWBN AVideo through commit c3edcc274c389816d434acadac07ee78eaf330c1 contains a reflected cross-site scripting vulnerability in the showAlertMessage function that inserts the raw Referer header into a JavaScript comment without encoding. Attackers can craft a Referer header containing / to close t...