PT-2026-7177 · Hollo · Hollo

Aliceif · Publicado 2026-02-09 · Atualizado 2026-02-28 · CVE-2026-25808

Positive Technologies (AI Summary)

CVSS v3.1

7.5

Alta

Vetor base

AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Name of the Vulnerable Software and Affected Versions Hollo versions prior to 0.6.20 Hollo versions prior to 0.7.2

Description Hollo is a federated single-user microblogging software that utilizes ActivityPub for federation. A security issue exists where direct messages (DMs) and posts restricted to followers were exposed through the ActivityPub outbox endpoint without proper authorization. This allowed unauthorized access to sensitive information. The issue affects the ActivityPub outbox endpoint.

Recommendations Update to Hollo version 0.6.20 or later. Update to Hollo version 0.7.2 or later.

Exploit

Correção

Missing Authorization

Enumeração de Fraquezas

CWE-862

Identificadores relacionados

CVE-2026-25808

GHSA-6R2W-3PCJ-V4V5

Produtos afetados

Hollo

Referências · 9

• 🔥 https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/25xxx/CVE-2026-25808.json · Exploit
• 🔥 https://github.com/fedify-dev/hollo/security/advisories/GHSA-6r2w-3pcj-v4v5 · Exploit
• https://github.com/fedify-dev/hollo/commit/329969c502ef092d5c3f9c2c20421c34f4ff0f0e · Correção
• https://github.com/fedify-dev/hollo/releases/tag/0.6.20 · Nota
• https://github.com/fedify-dev/hollo/releases/tag/0.7.2 · Nota
• https://twitter.com/VulmonFeeds/status/2021137486328496239 · Publicação no Twitter
• https://nvd.nist.gov/vuln/detail/CVE-2026-25808 · Nota de Segurança
• https://t.me/cveNotify/153608 · Publicação no Telegram
• https://osv.dev/vulnerability/CVE-2026-25808 · Aviso do Fabricante