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TI-2026-64876 Aliases CVE-2026-100720GHSA-mmqp-fgp4-5q7j

Froxlor before 2.3.12 Stored XSS via SSL certificate issuer

Priority MEDIUM 41CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
Passive
Attack complexity
Low
Attack requirements
None
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 2.0.0 through 2.3.10 is vulnerable to stored cross-site scripting. When a customer (the lowest-privileged authenticated role) uploads an SSL certificate for one of their own domains, the Certificates API add()/update() methods parse it with openssl_x509_parse() and store the issuer organization (issuer['O']) value verbatim without sanitization. Froxlor's table-listing renderer then emits scalar cells through Twig's `raw` filter, disabling HTML auto-escaping, so when an administrator or reseller opens Domains > SSL certificates the attacker-supplied issuer value executes as script in the privileged user's session. This crosses a privilege boundary from customer to admin and can result in full administrator account takeover; because a Froxlor admin controls webserver, DNS, and PHP configuration applied by a cron job running as root, the issue can be further escalated to command execution as root on the managed server. The issue is fixed in Froxlor 2.3.12.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00215 12th percentileScored 2026-11-07
Fix Fixed froxlor (froxlor): 2.3.12

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
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 2.3.122.3.12Patch availableCNA
  • froxlor Vendorfroxlor Affected 2.0.0 to before 2.3.12 Fixed in 2.3.12 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

  • Fix · CNA froxlor (froxlor) Fixed in 2.3.12

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Release ·

    froxlor 2.3.12

    11 records Highest priority Priority HIGH 3 HIGH, 3 MEDIUM, 5 LOW

    Other records, highest priority first

    • TI-2026-64867 froxlor before 2.3.12 Authentication Bypass via Session PersistencePriority HIGH 77
    • TI-2026-64872 Froxlor before 2.3.12 Privilege Escalation via SymlinkPriority HIGH 76
    • TI-2026-64871 Froxlor before 2.3.12 Arbitrary File Deletion via SymlinkPriority HIGH 72
    Show all 11 records →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-100720
  2. 2026-10-03 Alias added: GHSA-mmqp-fgp4-5q7j

References

Advisory 1

  • 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

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences