vciy

CVE-2024-53677

INDEX BUILT · 2026-09-20

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Apache Struts: Mixing setters for uploaded files and normal fields can allow bypass file upload checks

CVE-2024-536774 of 4 sources documented this
54

rank 54 = 26 + 25 + 1 + 2 + 0

rank@v1 · this cycle

Someone is already using it

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

EPSS 0.70143  ·  without this subject the record ranks 28

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 9.8, from NVD  ·  without this subject the record ranks 29

It is getting worse, not staying still

FIRST EPSS series, rescorings and bad loads removed

rose on 2026-01-18  ·  without this subject the record ranks 53

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 52

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 54

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$3.50Mover the next 30 days, if this record is yours
Movement+$181,000on 2026-01-18, the last material move, 7 months before this reading
Basisassumeda published average, not your estate

$3.50M = $4.99M incident cost x 1 exposure x 0.70143 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

0.70143EPSSNOT IN KEVas of 2026-09-20
Severity9.5 CRITICALreceipt
Harmtotal loss · unauthenticatedreceipt
Exploitationpublic proof-of-conceptreceipt
Defensefix version namedreceipt
Movementrisenreceipt
PLATEAU10Minimal movement since 2026-06-15, 94 days at 0.70, as of 2026-09-17. arc-rules@v1

Foresight · where to check next

joomshaper.net SPicagenda.comJoomlaCK.fr Pagebalbooa.comSAP_SE SAPSmarterTools53677

This record is one instance of CWE-434, unrestricted upload of file with dangerous type. The index holds 4432 prior instances of this class, 27 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 signalspoke length is how much of the record matches, not how bad it is

Sources disagree here.

Severity score
Apache9.5 CRITICALreceipt
NVD9.8 CRITICALreceipt
Scoring standard
ApacheCVSS v4.0receipt
NVDCVSS v3.1receipt

Both shown, dated. We don't pick winners. disagreement-rules@v1

Running Apache Struts? 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

Written for the ticket you're about to file.

Reachnetwork-reachable · no privileges required · no user interaction · high attack complexity · attack requirements presentreceipt
ImpactComplete confidentiality, integrity and availability loss, with impact on subsequent systemsreceipt
Scored fromCVSS v4.0 · the CNA's vectorreceipt
Weakness classCWE-434 Unrestricted Upload of File with Dangerous Typereceipt
Published consequencesCWE-434: 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.

Fixed in6.4.0receipt
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: Proof-of-concept published · 15 public repositories, 2024-12-12.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 15 public repositories2024-12-12receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA9.5 CRITICALreceipt
CVSS, NVD9.8 CRITICALreceipt
Exploit probability0.70143 · top 0.65% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byapachereceipt
Recorded changes69 · last 18 Sep 2026derived

Affected & Fixed Versions as published

Affected productApache Software Foundation Apache Strutsreceipt
Published rangesapache struts >= 2.0.0 < 6.4.0receipt
Fixed in6.4.0receipt

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

File upload logic in Apache Struts is flawed. An attacker can manipulate file upload params to enable paths traversal and under some circumstances this can lead to uploading a malicious file which can be used to perform Remote Code Execution. This issue affects Apache Struts: from 2.0.0 before 6.4.0. Users are recommended to upgrade to version 6.4.0 at least and migrate to the new file upload mechanism https://struts.apache.org/core-developers/file-upload . If you are not using an old file upload logic based on FileuploadInterceptor your application is safe. You can find more details in  https://cwiki.apache.org/confluence/display/WW/S2-067 receipt

NVD's analysis a second authority

severity
9.8 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-434
affected versions
apache struts >= 2.0.0 < 6.4.0
also scored by
[email protected] 9.5 CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:N/AU:Y/R:A/V:C/RE:L/U:Red

The CNA scored it 9.5 and NVD 9.8. Both are shown because both were published; we do not pick one.

check it yourself cwiki.apache.org receipt

Dated events

2025-03-17EPSS moved 0.00 to 0.852026-09-17EPSS moved 0.78 to 0.70

Movement the material steps

12 Dec 20240.00043
17 Mar 20250.8454 · crossed 0.10 and 0.50 · scoring model v2025.03.14
24 Apr 20250.92171 · crossed 0.90
3 Sep 20250.89343 · crossed 0.90
23 Sep 20250.91354 · crossed 0.90
14 Oct 20250.88739 · crossed 0.90
5 Nov 20250.91475 · crossed 0.90
1 Dec 20250.88739 · crossed 0.90
18 Jan 20260.91469 · crossed 0.90
15 Jun 20260.78198 · crossed 0.90 · scoring model v2026.06.15
17 Sep 20260.70143
Show all 66 observations
12 Dec 20240.00043
17 Mar 20250.8454
19 Mar 20250.82225
20 Mar 20250.79449
23 Mar 20250.82225
24 Mar 20250.8454
25 Mar 20250.88197
27 Mar 20250.86688
28 Mar 20250.8454
29 Mar 20250.86688
30 Mar 20250.8454
12 Apr 20250.8596
15 Apr 20250.8983
24 Apr 20250.92171
10 May 20250.91894
13 May 20250.9127
15 May 20250.91934
16 May 20250.92116
18 May 20250.91805
15 Jun 20250.91649
18 Jun 20250.91805
16 Jul 20250.9183
17 Jul 20250.92345
28 Jul 20250.92066
29 Jul 20250.91485
30 Aug 20250.90997
1 Sep 20250.91485
2 Sep 20250.91792
3 Sep 20250.89343
6 Sep 20250.88509
23 Sep 20250.91354
7 Oct 20250.91475
14 Oct 20250.88739
17 Oct 20250.89404
18 Oct 20250.88739
5 Nov 20250.91475
18 Nov 20250.90602
21 Nov 20250.91475
1 Dec 20250.88739
5 Dec 20250.89326
4 Jan 20260.89224
8 Jan 20260.87849
18 Jan 20260.91469
19 Jan 20260.92351
25 Jan 20260.92736
27 Jan 20260.93081
6 Feb 20260.92886
12 Feb 20260.93053
12 Mar 20260.91732
21 Mar 20260.91785
8 Apr 20260.93053
21 Apr 20260.93081
29 Apr 20260.93053
2 May 20260.93066
12 May 20260.92901
15 May 20260.92834
17 May 20260.93006
20 May 20260.91644
22 May 20260.92277
23 May 20260.93342
24 May 20260.93319
25 May 20260.93161
30 May 20260.93188
12 Jun 20260.93161
15 Jun 20260.78198
17 Sep 20260.70143

66 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 0.70143Published2024-12-11Public PoC2024-12-12Index as of2026-09-17

The record had been public for 1 year, 9 months when this index was last written.

Published 2024-12-11 receipt · Public PoC 2024-12-12 receipt · Index as of 2026-09-17 derived

The pattern, elsewhere

This record is one instance of CWE-434, unrestricted upload of file with dangerous type. The index holds 4432 prior instances of this class, 27 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2026-48908 · joomshaper.net SP Page Builder extension for…matches 6 of 9KEV listed · 2026receipt
CVE-2026-48939 · icagenda.com iCagenda extension for Joomlamatches 6 of 9KEV listed · 2026receipt
CVE-2026-56290 · JoomlaCK.fr Page Builder CK extension for…matches 6 of 9KEV listed · 2026receipt
CVE-2026-56291 · balbooa.com Balbooa Forms extension for Joomlamatches 6 of 9KEV listed · 2026receipt
CVE-2025-31324 · SAP_SE SAP NetWeaver (Visual Composer…only 1 attribute comparableKEV listed · 2025receipt
CVE-2025-52691 · SmarterTools SmarterMailonly 1 attribute comparableKEV listed · 2025receipt

"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

4432 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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