GHSA-2c47-m757-32g6
MEDIUMInsufficient input sanitization in ejson2env
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
github.com/Shopify/ejson2env/v2🐹github.com/Shopify/ejson2env💎ejson2envReal-time download stats are indexed for npm and PyPI packages. This vulnerability affects Go, RubyGems packages — download data is not available via public APIs for these ecosystems.
Description
Summary
The ejson2env tool has a vulnerability related to how it writes to stdout. Specifically, the tool is intended to write an export statement for environment variables and their values. However, due to inadequate output sanitization, there is a potential risk where variable names or values may include malicious content, resulting in additional unintended commands being output to stdout. If this output is improperly utilized in further command execution, it could lead to command injection vulnerabilities, allowing an attacker to execute arbitrary commands on the host system.
Details
The vulnerability exists because environment variables are not properly sanitized during the decryption phase, which enables malicious keys or encrypted values to inject commands.
Impact
An attacker with control over .ejson files can inject commands in the environment where source $(ejson2env) or eval ejson2env are executed.
Mitigation
- Update to a version of
ejson2envthat sanitizes the output during decryption or - Do not use
ejson2envto decrypt untrusted user secrets or - Do not evaluate or execute the direct output from
ejson2envwithout removing nonprintable characters.
Credit
Thanks to security researcher Demonia for reporting this issue.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/Shopify/ejson2env/v2 | all versions | 2.0.8 |
| 🐹Go | github.com/Shopify/ejson2env | all versions | No fix |
| 💎RubyGems | ejson2env | all versions | 2.0.8 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/Shopify/ejson2env/v2. 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 github.com/Shopify/ejson2env/v2 to 2.0.8 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-2c47-m757-32g6 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-2c47-m757-32g6 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-2c47-m757-32g6. 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-2c47-m757-32g6 in your dependencies?
O3 detects GHSA-2c47-m757-32g6 across Go, RubyGems dependencies and uses function-level reachability to confirm whether the vulnerable code path is actually reachable — not just present. No false positives.