GHSA-r2h5-3hgw-8j34 — v2
GHSA-r2h5-3hgw-8j34 is a security vulnerability in github.com/edgelesssys/constellation/v2. A fix is available for github.com/edgelesssys/constellation/v2 — see the affected versions and patch details below.
User data in TPM attestation vulnerable to MITM
Real-World Exposure
github.com/edgelesssys/constellation/v2Real-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
Attestation user data (such as the digest of the public key in an aTLS connection) was bound to the issuer's TPM, but not to its PCR state. An attacker could intercept a node initialization, initialize the node themselves, and then impersonate an uninitialized node to the validator. In practice, this meant that a CSP insider with sufficient privileges would have been able to join a node under their control to a Constellation cluster.
Patches
The issue has been patched in v2.5.2.
Workarounds
none
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/edgelesssys/constellation/v2 | all versions | 2.5.2go get github.com/edgelesssys/constellation/v2@v2.5.2 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/edgelesssys/constellation/v2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/edgelesssys/constellation/v2 to 2.5.2 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-r2h5-3hgw-8j34 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-r2h5-3hgw-8j34 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-r2h5-3hgw-8j34. 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-r2h5-3hgw-8j34 in your dependencies?
O3 Security finds GHSA-r2h5-3hgw-8j34 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.