ActivityPub Undo handler can unfollow or remove reposts on behalf of other accounts
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
| Vendor | Product | Default status | Versions | ||||||
|---|---|---|---|---|---|---|---|---|---|
| TryGhost | ActivityPub | affected |
|
No data.
No data.
| Vendor | Product | Versions | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Tryghost | Activitypub |
|
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.143% probability within 30 days)
| Type | Values Removed | Values Added |
|---|---|---|
| Metrics |
ssvc
|
| Type | Values Removed | Values Added |
|---|---|---|
| First Time appeared |
Tryghost
Tryghost activitypub |
|
| Vendors & Products |
Tryghost
Tryghost activitypub |
| Type | Values Removed | Values Added |
|---|---|---|
| Description | ActivityPub is a multi-tenant ActivityPub server for Ghost, built with Fedify. From 1.0.0 until 1.2.6, the `Undo` handler allows a remote federated server to cause the service to act on a `follow` or `repost` as though the activity came from a different account. This permits removal of an existing `follow` relationship or `repost` belonging to another account without that account's involvement. No private data is exposed and content is not modified; the affected relationships can be re-established. Services proxying to Ghost's hosted ActivityPub server have already been updated, while self-hosted services require an updated image and redeployment. This issue is fixed in version 1.2.6. | |
| Title | ActivityPub Undo handler can unfollow or remove reposts on behalf of other accounts | |
| Weaknesses | CWE-290 CWE-345 CWE-863 |
|
| References |
| |
| Metrics |
cvssV3_1
|