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Wikimedia Foundation Wikipedia Android AppGHSL-2026-101: Malicious deep links can steal Wikipedia Android session cookies - CVE-2026-65993

Risk 58

Improper host validation in the Wikipedia Android app deep-link handler allows attackers to load malicious content, steal session cookies, and compromise user accounts.

First published (updated )
CVE-2026-65993

Wikimedia Foundation Wikipedia Android AppMalicious deep links can steal Wikipedia Android session cookies - CVE-2026-65993

Risk 57

Improper host validation in the Wikipedia Android app deep-link handler allows attackers to load malicious content, steal session cookies, and compromise user accounts.

First published (updated )
Advisory
GHSL-2026-101

Wikimedia Foundation Wikipedia Android AppCross-request disclosure of CentralAuth cookies in Wikipedia Android App

Risk 26
Severity
5.3
Infoleak
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Wikimedia Foundation Wikipedia Android App allows Accessing/Intercepting/Modifying HTTP Cookies.

This issue affects Wikipedia Android App: main.

First published (updated )
CVE-2026-100379

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