GHSA-49cc-xrjf-9qf7 — v2
Fix: drakkan/sftpgo@88b1850GHSA-49cc-xrjf-9qf7 is a Improper Input Validation vulnerability in github.com/drakkan/sftpgo/v2. A fix is available for github.com/drakkan/sftpgo/v2 — see the affected versions and patch details below.
SFTPGo allows administrators to restrict command execution from the EventManager
Exploitation Status
No confirmed exploitation observed yet
- CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.
Exploitation and automatability from CISA’s SSVC triage for GHSA-49cc-xrjf-9qf7.
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.
Real-World Exposure
github.com/drakkan/sftpgo/v2🐹sftpgoReal-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
One powerful feature of SFTPGo is the ability to have the EventManager execute scripts or run applications in response to certain events. This feature is very common in all software similar to SFTPGo and is generally unrestricted.
However, any SFTPGo administrator with permission to run a script has access to the underlying OS/container with the same permissions as the user running SFTPGo, so they can access the database and server configurations.
This is unexpected for some SFTPGo administrators who think that there is a clear distinction between accessing the system shell and accessing the SFTPGo WebAdmin UI.
Patches
To avoid this confusion, running system commands is now disabled by default, and an allow list has been added so that system administrators configuring SFTPGo must explicitly define which commands are allowed to be configured from the WebAdmin UI.
https://github.com/drakkan/sftpgo/commit/88b1850b5806eee81150873d4e565144b21021fb https://github.com/drakkan/sftpgo/commit/b524da11e9466d05fe03304713ee1c61bb276ec4
Workarounds
Allow EventManager to be used only by SFTPGo administrators who also have shell access.
Affected Packages
| Ecosystem | Package | Vulnerable range | Fix |
|---|---|---|---|
| 🐹Go | github.com/drakkan/sftpgo/v2 | ≥ 2.4.0&&< 2.6.3 | 2.6.3go get github.com/drakkan/sftpgo/v2@v2.6.3 |
| 🐹Go | sftpgo | ≥ 2.4.0&&< 2.6.3 | 2.6.3go get sftpgo@v2.6.3 |
Detection & mitigation playbook
Open-source dependencyDetect
Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for github.com/drakkan/sftpgo/v2, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.
Fix
Update github.com/drakkan/sftpgo/v2 to 2.6.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms GHSA-49cc-xrjf-9qf7 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-49cc-xrjf-9qf7 can be triaged on real exposure rather than presence alone.
Tailored to GHSA-49cc-xrjf-9qf7. 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-49cc-xrjf-9qf7 in your dependencies?
O3 Security finds GHSA-49cc-xrjf-9qf7 across Go dependencies, including transitive ones, and its impact-aware SCA ranks findings by whether your code actually calls the vulnerable path.