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Stored cross-site scripting in Froxlor via customer theme value

Priority HIGH 73CWE-79Published · Updated

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

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00292 21st percentileScored 2026-11-07
Fix Fixed froxlor (froxlor): 2.3.14

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

VendorProductAffected versionsFixed inStatusSource
froxlorfroxlor2.0.0 to before 2.3.142.3.14Patch availableCNA
  • froxlor Vendorfroxlor Affected 2.0.0 to before 2.3.14 Fixed in 2.3.14 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPEVersionsRoleVendor
cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:*——froxlor
  • cpe:2.3:a:froxlor:froxlor:*:*:*:*:*:*:*:* Versions — — ·froxlor

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

  1. 2026-10-13 Threatist record created from CVE-2026-109960
  2. 2026-10-13 Alias added: GHSA-wj7h-phvf-62w3

References

  • 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
See all 86 →

Sources