CVE-2026-53524

A flaw was found in WeeChat. An authenticated user of the relay module's WebSocket functionality can send a small compressed frame that, when decompressed, expands to a significantly larger size. This "decompression bomb" can exhaust all available server memory, leading to a Denial of Service DoS...

CVE-2026-53525

A flaw was found in WeeChat, a free chat client. The relay authentication mechanism uses a non-constant-time comparison when verifying password hashes. This vulnerability allows a remote attacker to exploit subtle timing differences during the authentication process. By analyzing these timing...

openSUSE 16: weechat / weechat-devel / weechat-lang / weechat-lua / weechat-perl / etc (openSUSE-SU-2026:21615-1)

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:21615-1 advisory. Changes in weechat: - Update to 4.10.0: Added core: add command /theme 1338 core: add built-in light theme, applied automatically on first start...

CVE-2026-53524

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53525

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

EUVD-2026-64186

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

CVE-2026-53525

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

CVE-2026-53525

WeeChat (a free chat client) versions 0.3.1 through 4.9.0 are affected by a timing side-channel in relay authentication. The relay uses non-constant-time string comparison functions (weechat_strcasecmp and strcmp ) to verify password hashes and plaintext passwords. An attacker can exploit timing ...

CVE-2026-53525 WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

CVE-2026-53525 WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

CVE-2026-53525 WeeChat has Non-Constant-Time Password Hash Comparison in Relay Authentication

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

CVE-2026-53524 WeeChat has a Decompression Bomb in Relay WebSocket (DoS)

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53524 WeeChat has a Decompression Bomb in Relay WebSocket (DoS)

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53524 WeeChat has a Decompression Bomb in Relay WebSocket (DoS)

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

EUVD-2026-64185

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53524

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53524

WeeChat versions 4.3.0 through 4.9.0 contain a decompression bomb vulnerability in the relay module's WebSocket permessage-deflate decompression function (relay_websocket_inflate()). The function imposes no upper bound on output size, allowing an authenticated relay user to send a small compresse...

CVE-2026-53524: Improper Handling of Highly Compressed Data (Data Amplification)

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 4.3.0 through 4.9.0, the WeeChat relay module's WebSocket permessage-deflate decompression function relaywebsocketinflate has no upper bound on output size. An authenticated relay user can send a small compressed WebSock...

CVE-2026-53525: Observable Timing Discrepancy

WeeChat Wee Enhanced Environment for Chat is a free chat client. In versions 0.3.1 through 4.9.0, the WeeChat relay authentication uses non-constant-time string comparison functions weechatstrcasecmp and strcmp to verify password hashes and plaintext passwords. An attacker can exploit timing...

OPENSUSE-SU-2026:21615-1 Security update for weechat

This update for weechat fixes the following issues: Changes in weechat: - Update to 4.10.0: Added core: add command /theme 1338 core: add built-in "light" theme, applied automatically on first start on light-background terminals 1338 core: add themable flag on configuration options 1338 core: add...