CVE-2025-53941
CVE-2025-53941 is a medium-severity vulnerability with a CVSS 3.x base score of 6.1. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-79.
Key facts
- Severity: Medium (CVSS 3.x base score 6.1)
- EPSS exploit prediction: 0% (13th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-21766
- Weakness: CWE-79
- Published:
- Last modified:
Description
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.
Frequently asked questions
- What is CVE-2025-53941?
- 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.
- How severe is CVE-2025-53941?
- CVE-2025-53941 has a CVSS 3.x base score of 6.1, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is low, integrity low, and availability none.
- Is CVE-2025-53941 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (13th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-53941?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-53941 have an EU (EUVD) identifier?
- Yes. CVE-2025-53941 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21766.
- When was CVE-2025-53941 published?
- CVE-2025-53941 was published on 2025-07-17 and last updated on 2026-06-17.
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
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