CVE-2023-42453 describes a vulnerability in Synapse, the open-source Matrix homeserver, allowing authenticated users to forge read receipts for any event, even if they are not in the room. This medium-severity issue (CVSS 4.3) has a low attack complexity and impacts integrity by misleading users into believing events have been read. There is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this vulnerability. Users are advised to upgrade to Synapse version 1.93.0 to mitigate this issue.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
>= 1.34.0, < 1.93.0CPE matchmatch criteria | cpe:2.3:a:matrix:synapse:*:*:*:*:*:*:*:* | ||
37CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:37:*:*:*:*:*:*:* | ||
38CPE matchmatch criteria | cpe:2.3:o:fedoraproject:fedora:38:*:*:*:*:*:*:* |
CVSS version used by this source: 3.1
CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:N/I:L/A:N
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