Metrics
Affected Vendors & Products
No advisories yet.
Solution
No solution given by the vendor.
Workaround
No workaround given by the vendor.
Fri, 23 Jan 2026 16:45:00 +0000
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| First Time appeared |
Joinmastodon
Joinmastodon mastodon |
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| Vendors & Products |
Joinmastodon
Joinmastodon mastodon |
Thu, 22 Jan 2026 23:00:00 +0000
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| Metrics |
ssvc
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Thu, 22 Jan 2026 02:45:00 +0000
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| Description | Mastodon is a free, open-source social network server based on ActivityPub. Prior to versions 4.5.5, 4.4.12, and 4.3.18, an insecure direct object reference in the web push subscription update endpoint lets any authenticated user update another user's push subscription by guessing or obtaining the numeric subscription id. This can be used to disrupt push notifications for other users and also leaks the web push subscription endpoint. Any user with a web push subscription is impacted, because another authenticated user can tamper with their push subscription settings if they can guess or obtain the subscription id. This allows an attacker to disrupt push notifications by changing the policy (whether to filter notifications from non-followers or non-followed users) and subscribed notification types of their victims. Additionally, the endpoint returns the subscription object, which includes the push notification endpoint for this subscription, but not its keypair. Mastodon versions v4.5.5, v4.4.12, v4.3.18 are patched. | |
| Title | Mastodon has insufficient access control to push notification settings | |
| Weaknesses | CWE-863 | |
| References |
| |
| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-01-22T17:02:23.614Z
Reserved: 2026-01-19T14:49:06.313Z
Link: CVE-2026-23964
Updated: 2026-01-22T17:02:19.354Z
Status : Awaiting Analysis
Published: 2026-01-22T03:15:46.700
Modified: 2026-01-26T15:04:59.737
Link: CVE-2026-23964
No data.
OpenCVE Enrichment
Updated: 2026-01-22T10:08:04Z