CVE-2025-3777
Transformers's Improper Input Validation vulnerability can be exploited through username injection
Description
Hugging Face Transformers versions up to 4.49.0 are affected by an improper input validation vulnerability in the `image_utils.py` file. The vulnerability arises from insecure URL validation using the `startswith()` method, which can be bypassed through URL username injection. This allows attackers to craft URLs that appear to be from YouTube but resolve to malicious domains, potentially leading to phishing attacks, malware distribution, or data exfiltration. The issue is fixed in version 4.52.1.
How to fix CVE-2025-3777
To remediate CVE-2025-3777, upgrade the affected package to a fixed version below.
- —upgrade to 4.52.1 or later
Is CVE-2025-3777 being exploited?
Low — EPSS is 0.1%, meaning exploitation activity has not been observed at scale.
Affected packages (1)
- from 0, < 4.52.1
CVSS scores
| Source | Version | Severity | Vector |
|---|---|---|---|
| osv | CVSS 3.1 | LOW3.5 | CVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:L/I:N/A:N |