GHSA-53q7-4874-24qg
MEDIUMInformation Disclosure Vulnerability in Privacy Center of SERVER_SIDE_FIDES_API_URL
EPSS Exploitation Probability
EPSS (Exploit Prediction Scoring System) is a daily probability model maintained by FIRST.org. It estimates the likelihood a CVE will be exploited in production environments within the next 30 days, derived from real-world threat intelligence signals.
Blast Radius
ethyca-fidesReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects PyPI packages — download data is not available via public APIs for these ecosystems.
Description
SERVER_SIDE_FIDES_API_URL is a server-side configuration environment variable used by the Fides Privacy Center to communicate with the Fides webserver backend. The value of this variable is a URL which typically includes a private IP address, private domain name, and/or port.
This vulnerability allows an unauthenticated attacker to make a HTTP GET request from the Privacy Center that discloses the value of this server-side URL.
Impact
Disclosure of server-side configuration giving an attacker information on server-side ports, private IP addresses, and/or private domain names.
Patches
The vulnerability has been patched in Fides version 2.39.2. Users are advised to upgrade to this version or later to secure their systems against this threat.
Workarounds
There are no workarounds.
Proof of Concept
-
Set the value of the environment variable
FIDES_PRIVACY_CENTER__SERVER_SIDE_FIDES_API_URLof your Fides Privacy Center container before start-up to a private value such ashttps://some.private.domain.name/api/v1and start the Privacy Center application. -
Once the application is up, perform a HTTP GET request of the Privacy Center's main page e.g.
https://privacy.example.com. The value ofSERVER_SIDE_FIDES_API_URLis returned in the response's body.
~ ❯ curl -s https://privacy.example.com/ | \
grep '__NEXT_DATA__' | \
sed 's/.*<script id="__NEXT_DATA__" type="application\/json">//;s/<\/script>.*//' | \
jq '.props.serverEnvironment.settings.SERVER_SIDE_FIDES_API_URL'
"https://some.private.domain.name/api/v1"
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐍PyPI | ethyca-fides | ≥ 2.19.0&&< 2.39.2 | 2.39.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for ethyca-fides. O3's reachability analysis confirms whether the vulnerable code path is actually invoked in your application, so you act on real exposure instead of every transitive match.
Fix
Update ethyca-fides to 2.39.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-53q7-4874-24qg is resolved across your whole dependency graph.
Workarounds
If you can't upgrade right away: gate or disable the affected feature, validate untrusted input at the boundary, and avoid passing attacker-controlled data into the vulnerable path. O3's runtime protection blocks exploitation in production as an interim safeguard until the upgrade lands.
How O3 protects you
O3 pinpoints whether GHSA-53q7-4874-24qg is reachable in your code and exactly where to fix it, then blocks exploitation in production at runtime until the patched version is deployed.
Tailored to GHSA-53q7-4874-24qg. Runtime protection reduces exposure until a permanent patch is applied and verified — it complements patching, it doesn't replace it.
Frequently Asked Questions
Is GHSA-53q7-4874-24qg in your dependencies?
O3 detects GHSA-53q7-4874-24qg across PyPI dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.