vciy

CVE-2020-10199

INDEX BUILT · 2026-09-20

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Sonatype Nexus Repository before 3.21.2 allows JavaEL Injection (issue 1 of 2).

CVE-2020-101993 of 4 sources documented this
70

rank 70 = 40 + 22 + 0 + 2 + 6

rank@v1 · act now

Someone is already using it

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

EPSS 0.99064 · CISA KEV listed  ·  without this subject the record ranks 30

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 8.8, from NVD  ·  without this subject the record ranks 48

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 70

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 68

Someone else already set the date

CISA KEV remediation due date

CISA remediation date held  ·  without this subject the record ranks 64

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$4.94Mover the next 30 days, if this record is yours
Movement-$95,500on 2022-07-11, the last material move, 4 years, 1 month before this reading
Basisassumeda published average, not your estate

$4.94M = $4.99M incident cost x 1 exposure x 0.99064 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

0.99064EPSSKEV · LISTED
Severity8.8 HIGHreceipt
Harmtotal lossreceipt
Exploitationin the wild · KEVreceipt
Defenseunaffected versions publishedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2023-03-07, 1277 days at 0.99, as of 2026-09-04. arc-rules@v1

Foresight · where to check next

AtlassianAtlassianCloud FunctionApache StrutsApache Log4j2Cloud Gateway10199

This record is one instance of CWE-917, improper neutralization of special elements used in an expression language statement ('expression language injection'). The index holds 206 prior instances of this class, 8 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

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Harm, if it fires from the vector and the weakness

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Reachnetwork-reachable · low privileges required · no user interaction · low attack complexityreceipt
ImpactComplete confidentiality, integrity and availability lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-917 Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')receipt
Published consequencesCWE-917: Confidentiality: Read Application Data; Integrity: Execute Unauthorized Code or Commands[email protected]
Ransomware campaign useUnknown to CISAreceipt

CISA KEV & Federal Remediation Deadline from the record and CISA

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

First unaffected version, by branchnexus 3.21.2receipt
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.
CISA remediation statusoverdue since 2022-05-03receipt
CISA required actionApply updates per vendor instructions.receipt
Published to CISA KEV581 daysderived

Exploit Status & Known PoCs a ladder, not a score

Current rung: Exploited in the wild · CISA KEV listed, 2021-11-03.

  • RUNG 1Nothing observed in held sources
  • RUNG 2Proof-of-concept published · 7 public repositories2020-04-07receipt
  • RUNG 3Exploited in the wild · CISA KEV listed2021-11-03receipt
  • RUNG 4Ransomware campaign use known

Authority who says so

CVSS, NVD8.8 HIGHreceipt
Exploit probability0.99064 · top 0.07% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned bymitrereceipt
Recorded changes57 · last 15 Sep 2026derived

Affected & Fixed Versions as published

Named in the CPE rangesSonatype nexusreceipt
Published rangessonatype nexus < 3.21.2receipt

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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What it is stated by the CNA

Sonatype Nexus Repository before 3.21.2 allows JavaEL Injection (issue 1 of 2). receipt

NVD's analysis a second authority

severity
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
weakness
CWE-917
affected versions
sonatype nexus < 3.21.2
also scored by
8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

check it yourself support.sonatype.com packetstormsecurity.com packetstormsecurity.com cwe.mitre.org receipt

Dated events

2021-11-03Added to CISA KEV2022-02-04EPSS moved 0.22 to 0.912022-05-03CISA remediation due2022-07-11EPSS moved 0.91 to 0.892023-03-07EPSS moved 0.89 to 0.97

Movement the material steps

14 Apr 20210.21773
4 Feb 20220.90927 · crossed 0.50 and 0.90
11 Jul 20220.89013 · crossed 0.90
7 Mar 20230.97164 · crossed 0.90 · scoring model v2023.03.01
17 Mar 20250.94379 · scoring model v2025.03.14
15 Jun 20260.99064 · scoring model v2026.06.15
Show all 43 observations
14 Apr 20210.21773
4 Feb 20220.90927
11 Jul 20220.89013
7 Mar 20230.97164
21 Mar 20230.97112
5 Apr 20230.97099
21 Apr 20230.97225
5 May 20230.97302
3 Jun 20230.97300
19 Jul 20230.97286
20 Aug 20230.97217
5 Sep 20230.97310
22 Sep 20230.97369
10 Oct 20230.97385
14 Nov 20230.97374
2 Jan 20240.97392
20 Jan 20240.97318
21 Feb 20240.97312
8 Mar 20240.97281
25 Apr 20240.97277
11 May 20240.97327
27 May 20240.97322
27 Jun 20240.97285
26 Jul 20240.97342
28 Sep 20240.97343
13 Oct 20240.97355
15 Nov 20240.97378
27 Nov 20240.97403
17 Dec 20240.97352
20 Jan 20250.97339
21 Feb 20250.97305
11 Mar 20250.97276
17 Mar 20250.94379
27 Mar 20250.94407
28 Mar 20250.94379
29 Mar 20250.94407
30 Mar 20250.94379
2 Jul 20250.94131
4 Jul 20250.94244
26 Jul 20250.94379
18 Nov 20250.94
21 Nov 20250.94379
15 Jun 20260.99064

43 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 0.99064Published2020-04-01Public PoC2020-04-07CISA KEV2021-11-03Index as of2026-09-04

Listed by CISA 581 days after it published and the record had been public for 6 years, 5 months when this index was last written.

No material movement in 81 days as of the last ingest this index recorded.

Published 2020-04-01 receipt · Public PoC 2020-04-07 receipt · CISA KEV 2021-11-03 receipt · Index as of 2026-09-04 derived

The pattern, elsewhere

This record is one instance of CWE-917, improper neutralization of special elements used in an expression language statement ('expression language injection'). The index holds 206 prior instances of this class, 8 KEV-listed. The nearest of its KEV-listed records are drawn beside this. [email protected]

CVE-2022-26134 · Atlassian Confluence Data Centermatches 7 of 8KEV listed · 2022receipt
CVE-2021-26084 · Atlassian Confluence Servermatches 7 of 8KEV listed · 2021receipt
CVE-2022-22963 · Spring Cloud Functionmatches 7 of 8KEV listed · 2022receipt
CVE-2020-17530 · Apache Strutsmatches 7 of 8KEV listed · 2020receipt
CVE-2021-44228 · Apache Log4j2matches 6 of 8KEV listed · 2021receipt
CVE-2022-22947 · Spring Cloud Gatewaymatches 6 of 8KEV listed · 2022receipt

"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

206 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.

Siblings and hubs

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What usually comes next

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