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Symlink following in Froxlor enables root privilege escalation

Priority HIGH 76CWE-59Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
—
Confidentiality · integrity · availability
High · High · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA.

Summary

Froxlor before 2.3.15 contains a symlink following flaw (CWE-59) in Statistics::makeChownWithNewStats. An authenticated customer can replace the goaccess statistics directory in their document root with a symlink, so the root-run traffic cron changes ownership of arbitrary host directories and hands root-owned trees to the attacker, enabling privilege escalation to root.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

Description from the CNA

Froxlor before 2.3.15 contains a symlink following vulnerability in Statistics::makeChownWithNewStats that allows authenticated customers to take ownership of arbitrary host directories by abusing the root-run traffic cron. Attackers can replace the goaccess statistics directory in their document root with a symlink, causing chown -R to hand root-owned trees to them and enabling root escalation.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00632 50th percentileScored 2026-11-07
Fix Fixed froxlor (froxlor): 2.3.15

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
froxlorfroxlorbefore 2.3.152.3.15Patch availableCNA
  • froxlor Vendorfroxlor Affected before 2.3.15 Fixed in 2.3.15 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 2.3.15, the first fixed release.

Written with Claude Haiku 5.5 from the sources below · 2026-10-28

  • Fix · CNA froxlor (froxlor) Fixed in 2.3.15

Fixed in the same release

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

  • Release ·

    froxlor 2.3.15

    3 records Highest priority Priority HIGH 1 HIGH, 2 MEDIUM

    Other records, highest priority first

    • TI-2026-76944 Missing authorization in Froxlor SubDomains.delete APIPriority MEDIUM 57
    • TI-2026-76943 Authorization bypass in Froxlor Admins.get API exposes admin recordsPriority MEDIUM 57

Timeline

  1. 2026-10-20 Threatist record created from CVE-2026-113678
  2. 2026-10-21 Alias added: GHSA-j3hm-8rm8-m243
  3. 2026-10-23 CISA SSVC decision points changed
  4. 2026-10-23 Priority changed: MEDIUM → HIGH
  5. 2026-10-27 EPSS moved to the 50th–90th percentile

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-2026-64872 Froxlor before 2.3.12 Privilege Escalation via Symlink CVSS 4.0CRITICAL 9.4
See all 86 →

Sources