vciy

CVE-2024-40747

INDEX BUILT · 2026-09-20

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[20250101] - Core - XSS vectors in module chromes

CVE-2024-407474 of 4 sources documented this
4

rank 4 = 0 + 0 + 0 + 4 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.00251  ·  without this subject the record ranks 4

What it costs you if it fires

NVD CVSS base score, then the CNA's own

no CVSS held by anyone  ·  without this subject the record ranks 4

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 4

How much of the world it touches

NVD CPE configurations

2 products in the CPE ranges  ·  without this subject the record ranks 0

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 4

Hindsight · the state

0.00251EPSSNOT IN KEVas of 2026-09-20
Severitynot scored
Harmnot stated
Exploitationnone in held sources
Defenseunaffected versions publishedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2025-01-08, 571 days at 0.00, as of 2026-08-02. arc-rules@v1

Foresight · where to check next

QNAP Systems Inc.Cisco AdaptiveCVE-2018-6882ZimbraMicrosoft40747

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 47894 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. taxonomy@v1

Full pattern panel

Prior records in this weakness class. Each is its own record, dated and receipted.
Color is a claim, not decoration:the hostile worldthe defenseno signal

Running Joomla! CMS? Check your version

A deterministic range check against the ranges this record publishes. It tells you where a version sits in the record, not whether your deployment is exploitable. No account needed.

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Harm, if it fires from the vector and the weakness

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ReachNo CVSS vector in held sources, so no reach or impact can be stated.
Weakness classCWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')receipt
Published consequencesCWE-79: Access Control, Confidentiality: Bypass Protection Mechanism, Read Application Data; 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 branchjoomla\! 4.4.10; joomla\! 5.2.3receipt
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

Exploit probability0.00251 · top 83% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byJoomlareceipt
Recorded changes22 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productJoomla! Project Joomla! CMSreceipt
Published rangesjoomla\! >= 4.0.0 < 4.4.10; joomla\! >= 5.0.0 < 5.2.3receipt

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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What it is stated by the CNA

Various module chromes didn't properly process inputs, leading to XSS vectors. receipt

NVD's analysis a second authority

weakness
CWE-79
affected versions
joomla\! >= 4.0.0 < 4.4.10; joomla\! >= 5.0.0 < 5.2.3
also scored by
6.1 CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

check it yourself developer.joomla.org receipt

Movement the material steps

8 Jan 20250.00043
17 Mar 20250.00041 · scoring model v2025.03.14
15 Jun 20260.00242 · scoring model v2026.06.15
2 Aug 20260.00251
Show all 22 observations
8 Jan 20250.00043
17 Mar 20250.00041
29 Mar 20250.00034
30 Mar 20250.00041
9 May 20250.00059
5 Jun 20252e-05
17 Jun 20253e-05
25 Jul 20254e-05
13 Aug 20256e-05
23 Sep 20259e-05
3 Oct 20250.0001
24 Oct 20250.00011
3 Nov 20250.00013
18 Nov 20250.00029
21 Nov 20250.00013
15 Feb 20260.00042
23 Feb 20260.00065
25 Feb 20260.0005
29 May 20260.00067
15 Jun 20260.00242
10 Jul 20260.00246
2 Aug 20260.00251

22 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 0.00251Published2025-01-07Index as of2026-08-02

The record had been public for 1 year, 6 months when this index was last written.

Published 2025-01-07 receipt · Index as of 2026-08-02 derived

The pattern, elsewhere

This record is one instance of CWE-79, improper neutralization of input during web page generation ('cross-site scripting'). The index holds 47894 prior instances of this class, 32 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2018-19943 · QNAP Systems Inc. QTSonly 1 attribute comparableKEV listed · 2020receipt
CVE-2018-19953 · QNAP Systems Inc. QTSonly 1 attribute comparableKEV listed · 2020receipt
CVE-2020-3580 · Cisco Adaptive Security Appliance (ASA)…only 1 attribute comparableKEV listed · 2020receipt
CVE-2018-6882nothing comparable heldKEV listed · 2018receipt
CVE-2025-66376 · Zimbra Collaborationonly 1 attribute comparableKEV listed · 2026receipt
CVE-2026-42897 · Microsoft Exchange Server 2016 Cumulative…only 1 attribute comparableKEV listed · 2026receipt

"Matches n of m" counts the attributes the two records can both be compared on: the CVSS metrics they share a version of, any weakness class beyond this one, and the vendor. fit-rules@v1

47894 records in this class held. The six above are drawn from the ones CISA has listed as exploited, ranked by how much of the record matches this one. That is why every one of them is KEV-listed: the pool is, so the colour on those spokes says nothing the pool has not already said.

No curated product neighbourhood is held for this product, so the records above are the nearest this index can name. The neighbourhood table covers a small set of products and is extended by hand.

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What usually comes next

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