Froxlor before 2.3.12 fails to properly validate multi-line SSH public keys in the SshKeys::add() endpoint, allowing customers to inject arbitrary… (CVE-2026-90767)
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.
AI Analysis
Technical Summary
The vulnerability in Froxlor prior to version 2.3.12 involves improper validation of multi-line SSH public keys in the SshKeys::add() endpoint. This allows an attacker with customer-level privileges to inject arbitrary lines into authorized_keys files. By exploiting this, attackers can add malicious SSH key entries with option directives that grant persistent unauthorized access. This access can survive typical remediation actions such as key deletion or revocation of SSH access, posing a significant security risk.
Potential Impact
Attackers can gain persistent unauthorized SSH access to systems managed by vulnerable Froxlor instances. This unauthorized access can persist despite attempts to remove malicious keys or revoke SSH access, potentially leading to long-term compromise of affected systems. The vulnerability does not impact confidentiality but has a high impact on integrity due to unauthorized modification of authorized_keys files. Availability is not affected.
Mitigation Recommendations
A fix is available in Froxlor version 2.3.12. Users should upgrade to version 2.3.12 or later to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official patch.
Froxlor before 2.3.12 fails to properly validate multi-line SSH public keys in the SshKeys::add() endpoint, allowing customers to inject arbitrary… (CVE-2026-90767)
Description
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.
CVSS v3.1
Score 6.5medium
Affected software
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Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
The vulnerability in Froxlor prior to version 2.3.12 involves improper validation of multi-line SSH public keys in the SshKeys::add() endpoint. This allows an attacker with customer-level privileges to inject arbitrary lines into authorized_keys files. By exploiting this, attackers can add malicious SSH key entries with option directives that grant persistent unauthorized access. This access can survive typical remediation actions such as key deletion or revocation of SSH access, posing a significant security risk.
Potential Impact
Attackers can gain persistent unauthorized SSH access to systems managed by vulnerable Froxlor instances. This unauthorized access can persist despite attempts to remove malicious keys or revoke SSH access, potentially leading to long-term compromise of affected systems. The vulnerability does not impact confidentiality but has a high impact on integrity due to unauthorized modification of authorized_keys files. Availability is not affected.
Mitigation Recommendations
A fix is available in Froxlor version 2.3.12. Users should upgrade to version 2.3.12 or later to remediate this vulnerability. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- GHSA-qm9r-w65j-rh8m
- Osv Schema Version
- 1.4.0
- Aliases
- ["CVE-2026-90767"]
- Database Specific Severity
- HIGH
- Cvss Version
- 3.1
Threat ID: 6aa741a355bf5e2cf5489bdf
Added to database: 09/14/2026, 00:36:51 UTC
Last enriched: 09/14/2026, 00:42:09 UTC
Last updated: 09/14/2026, 02:07:42 UTC
Views: 3
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