Exploit discussion active in current signal (2 latest mentions)
Recommended action window: High priority (within 72h)
NVD description
continuwuity is a Matrix homeserver written in Rust. This vulnerability allows an attacker with a malicious remote server to cause the local server to sign an arbitrary event upon user interaction. Upon a user account leaving a room (rejecting an invite), joining a room or knocking on a room, the victim server may ask a remote server for assistance. If the victim asks the attacker server for assistance the attacker is able to provide an arbitrary event, which the victim will sign and return to the attacker. For the /leave endpoint, this works for any event with a supported room version, where the origin and origin_server_ts is set by the victim. For the /join endpoint, an additionally victim-set content field in the format of a join membership is needed. For the /knock endpoint, an additional victim-set content field in the format of a knock membership and a room version not between 1 and 6 is needed. This was exploited as a part of a larger chain against the continuwuity.org homeserver. This vulnerability affects all Conduit-derived servers. This vulnerability is fixed in Continuwuity 0.5.1, Conduit 0.10.11, Grapevine 0aae932b, and Tuwunel 1.4.9.
Priority
LOW
Exploitation
NONE
PoC
YES
Patch
NONE
Momentum
STABLE
| Date | Total | Labels |
|---|
| 2026-02-02 | 1 | General1 |
| 2026-02-03 | 2 | Disclosure1General1 |
CVE-2026-24471 continuwuity is a Matrix homeserver written in Rust. This vulnerability allows an attacker with a malicious remote server to cause the local server to sign an arbitra… https://www.cve.org/CVERecord?id=CVE-2026-24471
Post summary
The post references CVE-2026-24471 and gives a brief technical overview, but lacks details on exploitation, PoC, or remediation.
CVE-2026-24471 Matrix Homeserver Signature Forgery Vulnerability in Cont... https://vulmon.com/vulnerabilitydetails?qid=CVE-2026-24471 Don't wait vulnerability scanning results: https://alerts.vulmon.com/?utm_source=twitter&utm_medium=social&utm_campaign=2102281&utm_content=2
Post summary
The tweet announces CVE-2026-24471, a signature forgery vulnerability in Matrix homeserver, but provides no evidence of exploits, patches, or PoC.
🚨 CVE-2026-24471: Improper Validation in Conduit-d... Malicious Matrix servers can trick Conduit-based homeservers into signing arbitrary events during room operations—weapo... https://zerodaysignal.com/vulnerability/CVE-2026-24471 #netsec #vulnerability #CVE #sysadmin #zeroday
Post summary
The post announces CVE‑2026‑24471, highlighting improper validation in Conduit and the potential for malicious Matrix servers to sign arbitrary events, but it does not provide concrete exploit code, patch information, or evidence of active exploitation.