CVE-2026-25808
Last modified
CVE-2026-25808 is a high-severity vulnerability rated 7.5/10 on the CVSS scale. Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. EPSS estimates a 0.45% chance of exploitation in the next 30 days.
Description
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Prior to 0.6.20 and 0.7.2, there is a security vulnerability where DMs and followers-only posts were exposed through the ActivityPub outbox endpoint without authorization. This vulnerability is fixed in 0.6.20 and 0.7.2.
Metrics
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| Fedify | Hollo | >= 0.6.0, < 0.6.20 |
| Fedify | Hollo | >= 0.7.0, < 0.7.2 |
References
- https://github.com/fedify-dev/hollo/releases/tag/0.6.20Product, Release Notes
- https://github.com/fedify-dev/hollo/releases/tag/0.7.2Product, Release Notes
- https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5Exploit, Vendor Advisory
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
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