vciy

CVE-2023-37474

INDEX BUILT · 2026-09-20

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Path traversal in copyparty

CVE-2023-374744 of 4 sources documented this
43

rank 43 = 22 + 19 + 0 + 2 + 0

rank@v1 · scheduled

Someone is already using it

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

EPSS 0.44920  ·  without this subject the record ranks 21

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 7.5, from NVD  ·  without this subject the record ranks 24

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 43

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 41

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 43

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$1.37Mover the next 30 days, if this record is yours
Movement+$7,330on 2026-06-06, the last material move, 1 month before this reading
Basisassumeda published average, not your estate

$1.37M = $4.99M incident cost x 0.6121449559255632 exposure x 0.4492 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

0.4492EPSSNOT IN KEVas of 2026-09-20
Severity7.5 HIGHreceipt
Harmunauthenticated · networkreceipt
Exploitationpublic proof-of-conceptreceipt
Defenseno fix version held
Movementdoubled within 72hreceipt
PLATEAU10Minimal movement since 2026-06-15, 30 days at 0.45, as of 2026-07-15. arc-rules@v1

Foresight · where to check next

CVE-2024-57727ConfiguratorZyxel ATP seriesCVE-2024-41713CVE-2023-41266SonicWall Email37474

This record is one instance of CWE-22, improper limitation of a pathname to a restricted directory ('path traversal'). The index holds 10301 prior instances of this class, 94 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.

Scoring standard
GitHub_MCVSS v3.0receipt
NVDCVSS v3.1receipt

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

Running 9001 copyparty? 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 · low attack complexityreceipt
ImpactComplete confidentiality lossreceipt
Scored fromCVSS v3.0 · the CNA's vectorreceipt
Weakness classCWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')receipt
Published consequencesCWE-22: Integrity, Confidentiality, Availability: Execute Unauthorized Code or Commands; Integrity: Modify Files or Directories; Confidentiality: Read Files or Directories…[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed inNo fix version in held sources, as the index stood on 15 Jul 2026.
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 · 1 public repository, 2023-07-27.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 1 public repository2023-07-27receipt
  • RUNG 3Exploited in the wild · CISA KEV listed
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, the CNA7.5 HIGHreceipt
CVSS, NVD7.5 HIGHreceipt
Exploit probability0.4492 · top 1% of all CVEsreceipt
Assigned byGitHub_Mreceipt
Recorded changes51 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected product9001 copypartyreceipt
Published ranges9001 copyparty < 1.8.2receipt

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

Unauthenticated network requestno credentials, no interaction9001 copypartyCWE-22 path traversalConfidentiality lossC:Hexploits CWE-22data compromise

What it is stated by the CNA

Copyparty is a portable file server. Versions prior to 1.8.2 are subject to a path traversal vulnerability detected in the `.cpr` subfolder. The Path Traversal attack technique allows an attacker access to files, directories, and commands that reside outside the web document root directory. This issue has been addressed in commit `043e3c7d` which has been included in release 1.8.2. Users are advised to upgrade. There are no known workarounds for this vulnerability. receipt

NVD's analysis a second authority

severity
7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
weakness
CWE-22
affected versions
9001 copyparty < 1.8.2

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

Dated events

2024-12-17EPSS moved 0.07 to 0.212025-03-17EPSS moved 0.16 to 0.702026-06-15EPSS moved 0.90 to 0.43

Movement the material steps

15 Jul 20230.00044
17 Dec 20240.21036 · crossed 0.10
17 Mar 20250.70099 · crossed 0.50 · scoring model v2025.03.14
18 Mar 20250.3453 · crossed 0.50
19 Mar 20250.70099 · crossed 0.50
20 Mar 20250.3453 · crossed 0.50
23 Mar 20250.70099 · crossed 0.50
24 Mar 20250.3453 · crossed 0.50
27 Mar 20250.70099 · crossed 0.50
15 Apr 20250.91274 · crossed 0.90
14 Aug 20250.89933 · crossed 0.90
18 Nov 20250.67805
21 Nov 20250.89933
6 Jun 20260.90173 · crossed 0.90
15 Jun 20260.42828 · crossed 0.50 and 0.90 · scoring model v2026.06.15
15 Jul 20260.4492

This score more than doubled inside 72 hours. Both observations are in the full history below.

Show all 48 observations
15 Jul 20230.00044
28 Jul 20230.00087
1 Aug 20230.00064
12 Oct 20230.02398
23 Nov 20230.03396
17 Dec 20230.03430
25 Dec 20230.03689
4 Jan 20240.04155
27 Jan 20240.03495
7 Feb 20240.04555
1 Mar 20240.05850
25 Mar 20240.06430
3 Apr 20240.06190
16 Apr 20240.07422
27 Apr 20240.06424
20 May 20240.05882
13 Jun 20240.05541
20 Jul 20240.05897
15 Aug 20240.06498
22 Sep 20240.05821
5 Oct 20240.05595
18 Oct 20240.05525
31 Oct 20240.06985
11 Dec 20240.06779
17 Dec 20240.21036
24 Dec 20240.16077
21 Jan 20250.20893
3 Feb 20250.17861
18 Feb 20250.18415
4 Mar 20250.16280
17 Mar 20250.70099
18 Mar 20250.3453
19 Mar 20250.70099
20 Mar 20250.3453
23 Mar 20250.70099
24 Mar 20250.3453
27 Mar 20250.70099
29 Mar 20250.78198
30 Mar 20250.70099
15 Apr 20250.91274
7 May 20250.90793
24 May 20250.90397
14 Aug 20250.89933
18 Nov 20250.67805
21 Nov 20250.89933
6 Jun 20260.90173
15 Jun 20260.42828
15 Jul 20260.4492

48 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 0.4492Published2023-07-14Public PoC2023-07-27Index as of2026-07-15

Exploit probability more than doubled between 2025-03-18 and 2025-03-19 (0.3453 → 0.70099) and the record had been public for 3 years when this index was last written.

Published 2023-07-14 receipt · Public PoC 2023-07-27 receipt · Index as of 2026-07-15 derived

The pattern, elsewhere

This record is one instance of CWE-22, improper limitation of a pathname to a restricted directory ('path traversal'). The index holds 10301 prior instances of this class, 94 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2024-57727matches 8 of 8KEV listed · 2025receipt
CVE-2025-61884 · Oracle Configuratormatches 8 of 9KEV listed · 2025receipt
CVE-2024-11667 · Zyxel ATP series firmwarematches 8 of 9KEV listed · 2024receipt
CVE-2024-41713matches 7 of 8KEV listed · 2024receipt
CVE-2023-41266matches 7 of 8KEV listed · 2023receipt
CVE-2021-20023 · SonicWall Email Securitymatches 7 of 9KEV listed · 2021receipt

"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

10301 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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