CVE-2025-53891
CVE-2025-53891 is a medium-severity vulnerability with a CVSS 3.x base score of 4.3. 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-434.
Key facts
- Severity: Medium (CVSS 3.x base score 4.3)
- EPSS exploit prediction: 0% (25th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-21405
- Weakness: CWE-434
- Published:
- Last modified:
Description
The timelineofficial/Time-Line- repository contains the source code for the TIME LINE website. A vulnerability was found in the TIME LINE website where uploaded files (instruction/message media) are not strictly validated for type and size. A user may upload renamed or oversized files that can disrupt performance or bypass restrictions. This could result in malicious file upload, denial of service, or client-side crashes. Version 1.0.5 contains a fix for the issue.
Frequently asked questions
- What is CVE-2025-53891?
- The timelineofficial/Time-Line- repository contains the source code for the TIME LINE website. A vulnerability was found in the TIME LINE website where uploaded files (instruction/message media) are not strictly validated for type and size. A user may upload renamed or oversized files that can disrupt performance or bypass restrictions. This could result in malicious file upload, denial of service, or client-side crashes. Version 1.0.5 contains a fix for the issue.
- How severe is CVE-2025-53891?
- CVE-2025-53891 has a CVSS 3.x base score of 4.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and user interaction. Impact on confidentiality is none, integrity none, and availability low.
- Is CVE-2025-53891 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (25th percentile), an estimate of the probability of exploitation in the next 30 days.
- How do I fix CVE-2025-53891?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
- Does CVE-2025-53891 have an EU (EUVD) identifier?
- Yes. CVE-2025-53891 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-21405.
- When was CVE-2025-53891 published?
- CVE-2025-53891 was published on 2025-07-15 and last updated on 2026-06-17.
References
Other CWE-434 (Unrestricted Upload of File with Dangerous Type) vulnerabilities
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