CVE-2024-21686

highpriority · track · 35EPSS 0.009 · 59 %ileDEEUUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.89% (59th) EPSS

CVSS 8.7 · high

Is it mine?

25 products

Check your exposure

Who says so?

3 sources

cnnvd · enisa_euvd · cert_bund

EPSS · scored 2026-10-27

This High severity Stored XSS vulnerability was introduced in versions 7.13 of Confluence Data Center and Server. This Stored XSS vulnerability, with a CVSS Score of 7.3, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, high impact to integrity, no impact to availability, and requires user interaction. Atlassian recommends that Confluence Data Center and Server customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions listed on this CVE See the release notes (https://confluence.atlassian.com/doc/confluence-release-notes-327.html). You can download the latest version of Confluence Data Center and Server from the download center (https://www.atlassian.com/software/confluence/download-archives). This vulnerability was reported via our Bug Bounty program.

cvss

Technical severity, 0–10. One row per scoring source.

8.7

010

base score 0–10 · higher = more severe · hover a vector to decode

v3.18.7highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:Nprimary · NVD / NIST USexploitability 2.3 · impact 5.8

v3.07.3highCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · ENISA EU

v3.07.3highCVSS:3.0/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:Nsecondary · security@atlassian.comexploitability 2.1 · impact 5.2

v3.18highCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N/E:Usecondary · CVSS-BT (t0sche)

ssvc

A stakeholder decision — act, attend, or track — from exploitation and impact.

Exploitation: none · Automatable: no · Technical Impact: totalcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-79USprimary

affected products (25)

Products and version ranges known to be affected.

Atlassian Confluence Data Center≤ 8.4.0 to 8.4.5enisa_euvdEU
Atlassian Confluence Data Center≤ 8.1.0 to 8.1.4enisa_euvdEU
Atlassian Confluence Data Center≤ 8.3.0 to 8.3.4enisa_euvdEU
Atlassian Confluence Data Center≤ 8.2.0 to 8.2.3enisa_euvdEU
Atlassian Confluence Data Center≤ 8.0.0 to 8.0.4enisa_euvdEU
Atlassian Confluence Data Center≤ 7.19.0 to 7.19.21enisa_euvdEU
Atlassian Confluence Data Center≤ 8.6.0 to 8.6.2enisa_euvdEU
Atlassian Confluence Data Center≤ 7.20.0 to 7.20.3enisa_euvdEU
Atlassian Confluence Data Center≤ 8.9.0enisa_euvdEU
Atlassian Confluence Data Center≤ 8.5.0 to 8.5.8enisa_euvdEU
Atlassian Confluence Data Center≤ 8.7.1 to 8.7.2enisa_euvdEU
Atlassian Confluence Data Center≤ 8.8.0 to 8.8.1enisa_euvdEU
Atlassian Confluence Server≤ 7.19.0 to 7.19.21enisa_euvdEU
Atlassian Confluence Server≤ 7.20.0 to 7.20.3enisa_euvdEU
Atlassian Confluence Server≤ 8.1.0 to 8.1.4enisa_euvdEU
Atlassian Confluence Server≤ 8.4.0 to 8.4.5enisa_euvdEU
Atlassian Confluence Server≤ 8.2.0 to 8.2.3enisa_euvdEU
Atlassian Confluence Server≤ 8.0.0 to 8.0.4enisa_euvdEU
Atlassian Confluence Server≤ 8.3.0 to 8.3.4enisa_euvdEU
Atlassian Confluence Server≤ 8.5.0 to 8.5.8enisa_euvdEU

showing 20 of 25

advisories (1)

Vendor and ecosystem advisories describing this.

WID-SEC-W-2024-1627Atlassian Confluence: Mehrere SchwachstellenDeutsch2024-07-16csaf · cert_bundDE
Ein entfernter anonymer Angreifer kann mehrere Schwachstellen in Atlassian Confluence ausnutzen, um einen Denial-of-Service-Zustand zu erzeugen, einen Cross-Stite-Scripting-Angriff oder einen unspezifischen Angriff durchzuführen.

also known as (3)

Other names and identifiers for this entity.

sources

Which sources assert this record, and when.

cnnvd enisa_euvd cert_bund NVD CVE.org MITRE

published 2024-07-16modified 2026-06-17

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+53004 more

references (8)

External citations — patches, advisories, analysis.

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