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CVE-2021-24374

INDEX BUILT · 2026-09-20

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Jetpack < 9.8 - Carousel Module Non-Published Page/Post Attachment Comment Leak

CVE-2021-243744 of 4 sources documented this
15

rank 15 = 0 + 13 + 0 + 2 + 0

rank@v1 · backlog

Someone is already using it

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

EPSS 0.01494  ·  without this subject the record ranks 15

What it costs you if it fires

NVD CVSS base score, then the CNA's own

CVSS 5.3, from NVD  ·  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 15

How much of the world it touches

NVD CPE configurations

1 product in the CPE ranges  ·  without this subject the record ranks 13

Someone else already set the date

CISA KEV remediation due date

no CISA due date  ·  without this subject the record ranks 15

Unaudited dollar value2 of 3 inputs carry a receipt
Exposure$17,900over the next 30 days, if this record is yours
Movement-$336,000on 2025-03-30, the last material move, 1 year, 2 months before this reading
Basisassumeda published average, not your estate

$17,900 = $4.99M incident cost x 0.24048551839932833 exposure x 0.01494 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

0.01494EPSSNOT IN KEVas of 2026-09-20
Severity5.3 MEDIUMreceipt
Harmunauthenticated · networkreceipt
Exploitationnone in held sources
Defensefix version namedreceipt
Movementscoring model changedreceipt
PLATEAU10Minimal movement since 2025-03-30, 442 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 Automattic Jetpack – WP Security, Backup…? 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 · no privileges required · no user interaction · low attack complexityreceipt
ImpactPartial confidentiality lossreceipt
Scored fromCVSS v3.1 · NVD's vectorreceipt
Weakness classCWE-639 Authorization Bypass Through User-Controlled Keyreceipt
Published consequencesCWE-639: Access Control: Bypass Protection Mechanism; Access Control: Gain Privileges or Assume Identity[email protected]

CISA KEV & Federal Remediation Deadline from the record and CISA

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

Fixed in9.8receipt
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, NVD5.3 MEDIUMreceipt
Exploit probability0.01494 · top 27% of all CVEsreceipt
Blast breadth1 product across 1 vendorderived
Assigned byWPScanreceipt
Recorded changes53 · last 19 Sep 2026derived

Affected & Fixed Versions as published

Affected productAutomattic Jetpack – WP Security, Backup, Speed, & Growthreceipt
Published rangesautomattic jetpack < 9.8receipt
Fixed in9.8receipt

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

The Jetpack Carousel module of the JetPack WordPress plugin before 9.8 allows users to create a "carousel" type image gallery and allows users to comment on the images. A security vulnerability was found within the Jetpack Carousel module by nguyenhg_vcs that allowed the comments of non-published page/posts to be leaked. receipt

NVD's analysis a second authority

severity
5.3 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
weakness
CWE-639
affected versions
automattic jetpack < 9.8

check it yourself wpscan.com jetpack.com receipt

Dated events

2025-03-23EPSS moved 0.01 to 0.072025-03-29EPSS moved 0.01 to 0.292025-03-30EPSS moved 0.29 to 0.01

Movement the material steps

22 Jun 20210.00624
7 Mar 20237.1e-4 · scoring model v2023.03.01
17 Mar 20250.00672 · scoring model v2025.03.14
29 Mar 20250.28825 · crossed 0.10
30 Mar 20250.00789 · crossed 0.10
15 Jun 20260.01494 · scoring model v2026.06.15

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

Show all 53 observations
22 Jun 20210.00624
6 Jan 20220.02742
4 Feb 20220.04499
1 Apr 20220.00885
7 Mar 20237.1e-4
8 Mar 20230.00071
8 May 20230.00087
26 Jan 20240.00105
6 Mar 20240.00119
17 Dec 20240.00096
8 Mar 20250.00131
17 Mar 20250.00672
19 Mar 20250.00789
20 Mar 20250.00719
21 Mar 20250.00789
22 Mar 20250.00719
23 Mar 20250.07493
24 Mar 20250.00789
25 Mar 20250.00719
27 Mar 20250.00789
29 Mar 20250.28825
30 Mar 20250.00789
2 Apr 20250.00719
3 Apr 20250.00789
6 Apr 20250.00719
7 Apr 20250.00789
10 Apr 20250.00719
11 Apr 20250.00789
1 May 20250.00719
5 May 20250.00789
1 Jun 20250.00719
4 Jun 20250.00789
1 Jul 20250.00719
5 Jul 20250.00789
1 Aug 20250.00719
4 Aug 20250.00789
30 Aug 20250.00719
4 Sep 20250.00789
1 Oct 20250.00719
4 Oct 20250.00789
1 Nov 20250.00719
4 Nov 20250.00789
18 Nov 20250.006
21 Nov 20250.00789
1 Dec 20250.00719
4 Dec 20250.00789
1 Jan 20260.00719
4 Jan 20260.00789
1 Feb 20260.00719
4 Feb 20260.00789
1 Mar 20260.00719
4 Mar 20260.00789
15 Jun 20260.01494

53 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 0.01494Published2021-06-21Index as of2026-06-15

Exploit probability more than doubled between 2025-03-22 and 2025-03-23 (0.00719 → 0.07493) and the record had been public for 4 years, 11 months when this index was last written.

Published 2021-06-21 receipt · Index as of 2026-06-15 derived

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