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4 vulnerabilities found for hollo by fedify-dev

CVE-2026-25808 (GCVE-0-2026-25808)

Vulnerability from nvd – Published: 2026-02-09 21:50 – Updated: 2026-02-10 21:23
VLAI
Title
Hollo DMs get leaked and can be seen on Webfinger Browser
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
fedify-dev hollo Affected: < 0.6.20, 0.7.2
Affected: >= 7.0.0, < 0.7.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-53941 (GCVE-0-2025-53941)

Vulnerability from nvd – Published: 2025-07-17 14:01 – Updated: 2025-07-17 14:21
VLAI
Title
Hollo renders posts received with form elements and allows submission
Summary
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Versions prior to 0.6.5 allow HTML form elements to be submitted, making the software vulnerable to HTML injection. Version 0.6.5 fixes the issue.
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
fedify-dev hollo Affected: < 0.6.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2026-25808 (GCVE-0-2026-25808)

Vulnerability from cvelistv5 – Published: 2026-02-09 21:50 – Updated: 2026-02-10 21:23
VLAI
Title
Hollo DMs get leaked and can be seen on Webfinger Browser
Summary
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.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
fedify-dev hollo Affected: < 0.6.20, 0.7.2
Affected: >= 7.0.0, < 0.7.2
Create a notification for this product.
Show details on NVD website
To clipboard 

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CVE-2025-53941 (GCVE-0-2025-53941)

Vulnerability from cvelistv5 – Published: 2025-07-17 14:01 – Updated: 2025-07-17 14:21
VLAI
Title
Hollo renders posts received with form elements and allows submission
Summary
Hollo is a federated single-user microblogging software designed to be federated through ActivityPub. Versions prior to 0.6.5 allow HTML form elements to be submitted, making the software vulnerable to HTML injection. Version 0.6.5 fixes the issue.
Severity
6.1 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
SSVC
Exploitation: poc Automatable: no Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
fedify-dev hollo Affected: < 0.6.5
Create a notification for this product.
Show details on NVD website
To clipboard 

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