CVE-2026-25808Hollo is a federated single-user microblogging software designed to be federated through ActivityPub.
Updated under an hour ago ()
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It affects fedify hollo. Add what you run to find out whether that includes you.
No exploitation reported and no EPSS estimate yet.
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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.
- CVSS
- 7.5 HIGH (v3.1, NVD)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- Weakness (CWE)
- CWE-862
- Known exploited
- Not in CISA's KEV catalog
- EPSS (exploitation in the next 30 days)
- Not loaded for this CVE
- Assigned by
- Not given
- NVD analysis
- Analyzed
- Record last updated
- Jun 17, 2026
- First seen by InfoSec Signals
- Oct 9, 2026
Affected products
fedify hollo fedify:hollo | from 0.6.0 before 0.6.20; from 0.7.0 before 0.7.2 | NVD |
References
- https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0epatch
- 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
The CVE record on cve.org NVD's entry
The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.