Vulnerability · Published Feb 19, 2025 · Assigned by GitHub_M
CVE-2025-27090Server-Side Request Forgery (SSRF) in sliver teamserver
Medium 6.9
In plain English
A medium-severity server-side request forgery in sliver from BishopFox. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 50% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.
Official description
Sliver is an open source cross-platform adversary emulation/red team framework, it can be used by organizations of all sizes to perform security testing. The reverse port forwarding in sliver teamserver allows the implant to open a reverse tunnel on the sliver teamserver without verifying if the operator instructed the implant to do so. The only impact that has been shown is the exposure of the server's IP address to a third party. This issue has been addressed in version 1.5.43 and all users are advised to upgrade. There are no known workarounds for this vulnerability.
Affected packages & fixed versions
| Ecosystem | Package | Fixed in | Advisory |
|---|---|---|---|
| Go | github.com/bishopfox/sliver | 1.5.43 | GHSA-fh4v-v779-4g2w |
| Go | github.com/bishopfox/sliver | 1.5.43 | GO-2025-3472 |
Affected products (as reported)
Weakness: CWE-918 · Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N