vciy

CVE-2026-41228

INDEX BUILT · 2026-09-20

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Froxlor has Local File Inclusion via path traversal in API `def_language` parameter that leads to Remote Code Execution

CVE-2026-412284 of 4 sources documented this
27

rank 27 = 0 + 25 + 0 + 2 + 0

rank@v1 · scheduled

Someone is already using it

CISA KEV catalog · public proof-of-concept · FIRST EPSS

EPSS 0.00524  ·  without this subject the record ranks 27

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 10.0, from the CNA  ·  without this subject the record ranks 2

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

no persisting rise in 365 days  ·  without this subject the record ranks 27

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 25

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 27

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$26,100over the next 30 days, if this record is yours
Movementno material movementthe record holds only daily drift and scoring model releases
Basisassumeda published average, not your estate

$26,100 = $4.99M incident cost x 1 exposure x 0.00524 likelihood

udv@v1 · unaudited · wrong for you until you say what you run

$4.99M is the cost of a breach that happened, from IBM Cost of a Data Breach Report 2026, global average. It is not the value of any asset of yours. That average already covers breaches of every severity, so scaling it by exposure understates a partial-impact record. That is an assumption, not a measurement. Your own asset value goes in the decision record.

Hindsight · the state

0.00524EPSSNOT IN KEVas of 2026-09-20
Severity10 CRITICALreceipt
Harmtotal lossreceipt
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2026-04-23, 53 days at 0.01, as of 2026-06-15. arc-rules@v1

Foresight · where to check next

No weakness class or product neighbourhood is held for this record, so this index cannot name anywhere to check next. That is an absence in the record, not a finding about the software.

Color is a claim, not decoration:the hostile worldthe defenseno signal

Running froxlor? Check your version

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Harm, if it fires from the vector and the weakness

Written for the ticket you're about to file.

Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability loss, with impact beyond the vulnerable componentreceipt
Scored fromCVSS v3.1 · the CNA's vectorreceipt
Weakness classCWE-98 Improper Control of Filename for Include/Require Statement in PHP Program ('PHP Remote File Inclusion')receipt
Published consequencesCWE-98: Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

The fix, and how long it's been waiting.

First unaffected version, by branchfroxlor 2.3.6receipt
Patch available sinceNo dated patch-availability record in held sources. The index holds reference URLs without dates and only the current revision of the CVE record, so the day a fix first existed cannot be derived. Only the versions it landed in.

Exploit Status & Known PoCs a ladder, not a score

Current rung: Nothing observed in held sources.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA10 CRITICALreceipt
Exploit probability0.00524 · top 57% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byGitHub_Mreceipt
Recorded changes5 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productfroxlorreceipt
Published rangesfroxlor < 2.3.6receipt

A rung lights from a row in the index, never from an assessment. "Held sources" is the true scope of the claim: this index reads the CVE record, NVD, CISA KEV, FIRST's EPSS and public proof-of-concept repositories, and it does not observe attacks.

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Attack path

Network requestrequires low privilegesfroxlorCWE-98 weaknessAdjacent componentsscope changeFull compromise (C/I/A)C:H / I:H / A:Hexploits CWE-98scope changedata compromise

What it is stated by the CNA

Froxlor is open source server administration software. Prior to version 2.3.6, the Froxlor API endpoint `Customers.update` (and `Admins.update`) does not validate the `def_language` parameter against the list of available language files. An authenticated customer can set `def_language` to a path traversal payload (e.g., `../../../../../var/customers/webs/customer1/evil`), which is stored in the database. On subsequent requests, `Language::loadLanguage()` constructs a file path using this value and executes it via `require`, achieving arbitrary PHP code execution as the web server user. Version 2.3.6 fixes the issue. receipt

NVD's analysis a second authority

weakness
CWE-98
affected versions
froxlor < 2.3.6
also scored by
[email protected] 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H

check it yourself github.com github.com github.com receipt

Movement the material steps

23 Apr 20260.00055
15 Jun 20260.00524 · scoring model v2026.06.15
Show all 5 observations
23 Apr 20260.00055
28 Apr 20260.00066
29 Apr 20260.00074
25 May 20260.00085
15 Jun 20260.00524

5 observations held. A highlighted step crossed a promotion threshold. A step marked with a scoring model moved because the instrument was replaced, not because the vulnerability changed. receipt

The full biography

EPSS 0.00524Published2026-04-23Index as of2026-06-15

The record had been public for 1 month when this index was last written.

Published 2026-04-23 receipt · Index as of 2026-06-15 derived

Siblings and hubs

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What usually comes next

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