CVE-2026-15806

In Python's urllib.request, HTTPPasswordMgr ignored URL scheme when matching stored credentials, allowing HTTPS credentials to be sent over HTTP if an attacker redirected or downgraded the client, exposing them in cleartext. The fix scopes credential matching by scheme while preserving bare-autho...

PSF-2026-36

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also us...

CVE-2026-15806 `HTTPPasswordMgr` can send saved HTTPS credentials via HTTP because of incorrect scheme matching

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also us...

CVE-2026-15806

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also us...

CVE-2026-15806

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also us...

ANT-2026-BVDWY3J9 · supabase/auth · open-redirect

open-redirect medium Severity Claude medium · Security research firm - · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-BVDWY3J9: Redirect allow-list ignores URL scheme and port In supabase/auth, IsRedirectURLValid...

ANT-2026-REDYDMAE · supabase/supabase · xss

xss medium Severity Claude medium · Security research firm - · Maintainer - Discovered by Claude Mythos Preview REPORT Anthropic's analysis of this finding, sealed at approval. ANT-2026-REDYDMAE: DOM-based XSS via javascript: scheme in URL hostname check The isVercelUrl helper checks only that ne...

BIT-DJANGO-2026-15920 Potential cross-site scripting via URLField values in the admin

An issue was discovered in Django 5.2 before 5.2.17 and 6.0 before 6.0.8. django.contrib.admin.utils.displayforfield renders URLField values as clickable links in the admin without validating the URL. A value stored with an unsafe scheme is displayed as a link on changelist and read-only admin...

CVE-2026-15371

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

CVE-2026-15371

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

CVE-2026-15371 Velociraptor Stored XSS in URL column types

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

CVE-2026-15371 Velociraptor Stored XSS in URL column types

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

EUVD-2026-60571

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

CVE-2026-15371 Velociraptor Stored XSS in URL column types

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

CVE-2026-15371

Velociraptor's web GUI URL column type accepts arbitrary schemes (e.g., javascript:), enabling stored XSS when a victim clicks a crafted link. Root cause is lack of scheme allow-listing. CVSS 8.1 (HIGH) requires high privileges and user click. Exploitation in the wild is not reported. Advisory: h...

EUVD-2026-60540

Mattermost versions 11.7.x = 11.7.6, 10.11.x = 10.11.21, 11.8.x = 11.8.3 fail to validate BoardMember.Scheme fields server-side on insert and archive-import paths which allows a board editor or non-guest team member to grant board admin to arbitrary users via POST /api/v2/boards/boardID/members a...

PT-2026-76907

Name of the Vulnerable Software and Affected Versions Velociraptor affected versions not specified Description The web GUI allows the specification of custom column types for tables. When the URL type is used, the system forms a clickable link from the cell value. Because the code does not restri...

CVE-2026-15371: Improper Handling of URL Encoding (Hex Encoding)

Velociraptor's web GUI allows specifying a custom type for columns in tables. The URL type takes the cell value and forms a URL which can be clicked in the GUI.The code does not limit the schemes allowed in this URL , allowing an attacker to specify a JavaScript scheme exposing the user to XSS...

PT-2026-78239

Name of the Vulnerable Software and Affected Versions Streambert versions prior to 2.6.0 Description Streambert is a cross-platform Electron Desktop App used for streaming and downloading video content. The open-external IPC handler in src/ipc/downloads.js passes a renderer-supplied url directly ...

CVE-2026-15806: Cleartext Transmission of Sensitive Information

The HTTPPasswordMgr class in the urllib.request module, along with its subclasses HTTPPasswordMgrWithDefaultRealm and HTTPPasswordMgrWithPriorAuth, did not take the URL scheme into account when matching stored credentials against a requested URL. Credentials added for an https:// URL were also us...