EUVD-2026-76988
GHSA-qm9r-w65j-rh8m
Severity by source
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Low-privilege customer injects SSH keys over network; scope changes as injected entries affect server-level SSH access control outside the customer boundary.
Primary rating from Vendor (VulnCheck).
CVSS VectorVendor: VulnCheck
Lifecycle Timeline
4DescriptionCVE.org
Froxlor before 2.3.12 fails to properly validate multi-line SSH public keys in the SshKeys::add() endpoint, allowing customers to inject arbitrary lines into authorized_keys files. Attackers can inject malicious SSH key entries with option directives to gain persistent unauthorized access that survives key deletion and SSH access revocation.
AnalysisAI
SSH key injection in Froxlor before 2.3.12 allows authenticated customers to write arbitrary lines into server-side authorized_keys files by embedding newline characters in SSH public key submissions to the SshKeys::add() API endpoint. An attacker with a valid customer account can plant SSH key entries bearing OpenSSH option directives (e.g., command=, from=, restrict) that persist beyond explicit key-deletion and access-revocation actions performed by administrators. …
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Attack ChainAIDerived
Hypothetical attack flow derived from CVE metadata
Vulnerability AssessmentAI
| Exploitation | Exploitation requires a valid Froxlor customer account with the SSH keys feature enabled (non-default in minimal installations; must be explicitly provisioned by the hosting provider). … Additional conditions and limiting factors are described in the full assessment. |
| Risk Assessment | The CVSS 4.0 base score of 7.1 (AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:H/VA:N) accurately reflects that exploitation requires a valid low-privilege customer account (PR:L) but no elevated complexity or user interaction. … Full risk analysis with EPSS, KEV, and SSVC signal comparison available after sign-in. |
| Exploit Scenario | Full exploit scenario with step-by-step reproduction available after sign-in. |
| Remediation | Upgrade Froxlor to version 2.3.12 or later; this is the vendor-released patched version confirmed in the GitHub security advisory at https://github.com/froxlor/Froxlor/security/advisories/GHSA-p3v3-74gc-jh5f. … Detailed patch versions, workarounds, and compensating controls in full report. |
Recommended ActionAI
Within 24 hours: Identify all Froxlor installations prior to version 2.3.12 and upgrade immediately to 2.3.12 or later; simultaneously audit all server authorized_keys files for injected SSH option directives (command=, from=, restrict flags) that may have been planted by customer accounts. …
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Command Injection in GitHub repository froxlor/froxlor prior to 2.0.8. Rated high severity (CVSS 8.8), this vulnerabilit
Improper Restriction of Excessive Authentication Attempts in GitHub repository froxlor/froxlor prior to 2.0.20. Rated cr
Authentication Bypass by Primary Weakness in GitHub repository froxlor/froxlor prior to 2.0.13. Rated critical severity
Froxlor through 0.10.29.1 allows SQL injection in Database/Manager/DbManagerMySQL.php via a custom DB name. Rated critic
Command injection in Froxlor server admin before 2.3.4 due to typo (== instead of =) disabling input validation entirely
Improper Link Resolution Before File Access in GitHub repository froxlor/froxlor prior to 2.1.0. Rated high severity (CV
Unrestricted Upload of File with Dangerous Type in GitHub repository froxlor/froxlor prior to 2.0.14. Rated high severit
Cross-Site Request Forgery (CSRF) in GitHub repository froxlor/froxlor prior to 2.0.11. Rated high severity (CVSS 8.8),
Code Injection in GitHub repository froxlor/froxlor prior to 2.0.11. Rated high severity (CVSS 8.8), this vulnerability
Code Injection in GitHub repository froxlor/froxlor prior to 2.0.10. Rated high severity (CVSS 8.8), this vulnerability
An issue was discovered in Froxlor before 0.10.14. Rated high severity (CVSS 8.8), this vulnerability is remotely exploi
Froxlor is open source server administration software. Rated high severity (CVSS 7.5), this vulnerability is remotely ex
Same technique Authentication Bypass
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External POC / Exploit Code
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