CVE-2025-54365 describes a bypass vulnerability in fastapi-guard versions prior to 3.0.2, a security library for FastAPI. The vulnerability stems from an insufficient regular expression patch intended to mitigate ReDoS, allowing attackers to bypass security controls by crafting script tag attributes exceeding a specific length. This high-severity vulnerability (CVSS 7.5) has a network attack vector, low attack complexity, and can lead to high availability impact. Currently, there is no evidence of active exploitation, public exploit code, or significant community discussion surrounding this CVE.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
3.0.1CPE matchmatch criteria | cpe:2.3:a:fastapi-guard:fastapi_guard:3.0.1:*:*:*:*:*:*:* |
CVSS version used by this source: 4.0
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:L/VA:H/SC:N/SI:N/SA:N/E:P/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.0 Reddit, 0.1 Bluesky, 0.1 Mastodon, and 0.4 GitHub mentions.
No media coverage found for this CVE.
The average CVE in this peer group has 0.1 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.