WPPConnect Server through 2.10.76 contains a missing authentication vulnerability that allows unauthenticated attackers to read decrypted sticker media through the /files static mount. Attackers can enumerate Unix timestamps in GET /files/file<timestamp>.webp requests to retrieve stickers from any session, bypassing per-session token checks.
https://hackmd.io/@hieund/wppconnect-files-unauth-cross-session-sticker-media-disclosure
https://github.com/wppconnect-team/wppconnect-server/pull/2709
https://github.com/wppconnect-team/wppconnect-server/issues/2708
https://github.com/wppconnect-team/wppconnect-server/commit/bf1faac7a14892207348c3dc5f6e03ed180e09e8
Published: 2026-11-05
Updated: 2026-11-05
Base Score: 5
Vector: CVSS2#AV:N/AC:L/Au:N/C:P/I:N/A:N
Severity: Medium
Base Score: 5.3
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Severity: Medium
Base Score: 6.9
Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
Severity: Medium
EPSS: 0.00415