GHSA-cvw9-c57h-3397 is a medium-severity (CVSS 5.7) Information Exposure vulnerability in github.com/zitadel/zitadel. A fix is available for github.com/zitadel/zitadel — see the affected versions and patch details below.
ZITADEL Vulnerable to Session Information Leakage
Exploitation Status
Proof-of-concept exploit code exists
- CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.
Exploitation and automatability from CISA’s SSVC triage for GHSA-cvw9-c57h-3397.
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.
How urgent is this, really
GHSA-cvw9-c57h-3397 plotted by exploitation likelihood (EPSS) against impact (CVSS). The shaded corner — EPSS 50%+ and CVSS 7.0+ — is where this CVE doesn't sit, though severity or exploitability alone can still warrant action.
Where this sits among everything scored
Of 377,333 CVEs with a current EPSS score, this one falls in the < 10% band (highlighted). Real counts from FIRST.org, not a sample — log-scaled since the landscape is heavily right-skewed.
Real-World Exposure
github.com/zitadel/zitadel🐹github.com/zitadel/zitadel🐹github.com/zitadel/zitadelReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go packages — download data is not available via public APIs for these ecosystems.
Description
Impact
ZITADEL provides users the ability to list all user sessions of the current user agent (browser) by API and in the Console UI.
Due to a missing check, user sessions without that information (e.g. when created though the session service) were incorrectly listed exposing potentially other user's sessions.
Note that the Login UI was never affected and there was no possibility to take over such a session.
Patches
2.x versions are fixed on >= 2.55.1 2.54.x versions are fixed on >= 2.54.5 2.53.x versions are fixed on >= 2.53.8
ZITADEL recommends upgrading to the latest versions available in due course.
Workarounds
There is no workaround since a patch is already available.
References
- https://github.com/zitadel/zitadel/pull/8231
- https://discord.com/channels/927474939156643850/1254096852937347153
- https://github.com/zitadel/zitadel/issues/8213
Questions
If you have any questions or comments about this advisory, please email us at [email protected]
Credits
Thanks to @cybertransformer, @Avolicious, @AmirhoseinBrz and @srividyaj for finding and reporting the vulnerability.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/zitadel/zitadel | ≥ 2.0.0&&< 2.53.8 | 2.53.8go get github.com/zitadel/zitadel@v2.53.8 |
| 🐹Go | github.com/zitadel/zitadel | ≥ 2.54.0&&< 2.54.5 | 2.54.5go get github.com/zitadel/zitadel@v2.54.5 |
| 🐹Go | github.com/zitadel/zitadel | ≥ 2.55.0&&< 2.55.1 | 2.55.1go get github.com/zitadel/zitadel@v2.55.1 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/zitadel/zitadel, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/zitadel/zitadel to 2.53.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-cvw9-c57h-3397 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 Security's impact-aware SCA analyses which vulnerable code paths your application actually calls, so a match like GHSA-cvw9-c57h-3397 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-cvw9-c57h-3397. 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-cvw9-c57h-3397 in your dependencies?
O3 Security finds GHSA-cvw9-c57h-3397 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.