Stored cross-site scripting in Froxlor via customer theme value
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- Passive
- Attack complexity
- Low
- Attack requirements
- Present
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- High · High · None
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-79.
Summary
Froxlor from 2.0.0 before 2.3.14 contains a stored cross-site scripting flaw (CWE-79) in the customer theme value. An authenticated customer with low privileges can store HTML and JavaScript by setting a malicious theme value, and the script runs when an administrator views the customer overview with the Theme column enabled. The attacker can use this to perform actions with the administrator's session, such as creating administrator accounts or changing server settings.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
Description from the CNA
Froxlor 2.0.0 before 2.3.14 contains a stored cross-site scripting vulnerability that allows authenticated customers to inject HTML and JavaScript by setting a malicious theme value via customer_index.php. Script executes when an administrator views the customer overview with the Theme column enabled, letting attackers abuse the CSRF token to create administrator accounts or change server settings.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- Poc
- Automatable
- No
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade Froxlor to version 2.3.14. The sources list no fixed version for other Froxlor branches.
Written with Claude Haiku 5.5 from the sources below · 2026-10-27
- Fix · CNA froxlor (froxlor) Fixed in 2.3.14
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Release ·
froxlor 2.3.14
4 records Highest priority Priority HIGH 2 HIGH, 2 MEDIUM
Other records, highest priority first
- TI-2026-71728 Newline injection in Froxlor enables local privilege escalationPriority HIGH 70
- TI-2026-71730 Insecure direct object reference in Froxlor email template editorPriority MEDIUM 57
- TI-2026-71729 Missing authorization in Froxlor MySQL server and cronjob APIPriority MEDIUM 57
Timeline
- 2026-10-13 Threatist record created from CVE-2026-109960
- 2026-10-13 Alias added: GHSA-wj7h-phvf-62w3
References
More froxlor vulnerabilities
- TI-2023-00300 Command Injection in froxlor/froxlor CVSS 3.1HIGH 8.8
- TI-2023-02973 Improper Restriction of Excessive Authentication Attempts in froxlor/froxlor CVSS 3.1CRITICAL 9.8
- TI-2023-01234 Authentication Bypass by Primary Weakness in froxlor/froxlor CVSS 3.1CRITICAL 9.8
- TI-2023-01911 Unrestricted Upload of File with Dangerous Type in froxlor/froxlor CVSS 3.1HIGH 8.8
- TI-2026-64867 froxlor before 2.3.12 Authentication Bypass via Session Persistence CVSS 4.0HIGH 8.7
- TI-2026-76945 Symlink following in Froxlor enables root privilege escalation CVSS 4.0CRITICAL 9.4
Sources
- CVE-2026-109960 · CVE Program
- CVE-2026-109960 · NVD
- FIRST EPSS
- GHSA-wj7h-phvf-62w3 · GitHub Advisory Database · CC BY 4.0
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