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CVE-2025-57816

24
FAUCET Score

CVE-2025-57816 is a high-severity vulnerability in the Fides open-source privacy engineering platform (prior to version 2.69.1) where its built-in IP-based rate limiting is ineffective when deployed behind CDNs, proxies, or load balancers. This allows attackers to bypass rate limits by targeting the infrastructure's IP address instead of the client's, potentially leading to denial of service. The vulnerability has a CVSS score of 7.5 (High) due to its network attack vector, low attack complexity, and high impact on availability, with no impact on confidentiality or integrity. There is currently no evidence of active exploitation, public exploit code, or significant community discussion, and it is not listed on the CISA KEV catalog.

Impacted Technologies

VendorProductVersion(s)CPE
< 2.69.1CPE matchmatch criteria
cpe:2.3:a:ethyca:fides:*:*:*:*:*:*:*:*

CVSS Data

CVSS version used by this source: 4.0

6.3MEDIUM

CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:X/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

Attack Vector
NETWORK
Attack Complexity
LOW
Attack Requirements
PRESENT
Privileges Required
NONE
User Interaction
NONE
VS Confidentiality
NONE
VS Integrity
NONE
VS Availability
LOW
SS Confidentiality
NONE
SS Integrity
NONE
SS Availability
NONE
Exploit Maturity
NOT_DEFINED
CvssVersion
4.0

Exploit Intelligence

EPSS Score
0.41%
Probability of exploitation in next 30 days
EPSS Percentile
33.2%
Percentile rank of EPSS score among Peer Group
As of 2026-07-27
Model: v2026.06.15
This CVE's current EPSS score of 0.0041 is in the 12th percentile among its peer group of 51,551 CVEs.

Social Chatter

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.

Media 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.

Remediation

Patch Available

Vendor Patches (2)

github_advisorypatch availablevia nvd_reference
View patch
pippatch availablevia ghsa
Product: ethyca-fidesFixed in: 2.69.1

Vendor Advisories (1)

pipGHSA-fq34-xw6c-fphfmedium

Fides Webserver API Rate Limiting Vulnerability in Proxied Environments

Sep 8, 2025

References

github.com / ethyca/fides/commit/59903c195e2f9f8915a1db94950aefd557033a5c
Patch
github.com / ethyca/fides/releases/tag/2.69.1
Release Notes
github.com / ethyca/fides/security/advisories/GHSA-fq34-xw6c-fphf
Vendor Advisory