CVE-2025-53941

Hollo renders posts received with form elements and allows submission

CVSS 6.1 MEDIUMEPSS 0.2%CWE-79

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.

CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

Affected products

fedify-dev · hollo

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References

https://github.com/fedify-dev/hollo/commit/f9d25e10ba5406c27f9e87dfb01f75b6a52f2410 https://github.com/fedify-dev/hollo/releases/tag/0.6.5 https://github.com/fedify-dev/hollo/security/advisories/GHSA-w7gc-g3x7-hq8h