8.7

CVE-2024-21686: atlassian confluence_data_center

Modified
Published 16-07-2024Last modified 19-03-2025

Vulnerability summary

CVE-2024-21686 is a high (CVSS 8.7) vulnerability in atlassian confluence_data_center. EPSS estimates a 0.89% chance of exploitation in the next 30 days, higher than 59.4% of scored vulnerabilities.

Priority
Routine

Not severe (CVSS 7.3, network access); no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
8.7/10
010
High · v3.1 (NVD)
EPSS score
0.89%
0%100%
Low · 0.00 pp in 30 days
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Timeline

  1. 16-07-2024
    PublishedVulnerability first disclosed.
  2. 19-03-2025
    Last modifiedVulnerability information updated.

Description

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 metrics

3 scores · 2 sources · 2 versions

EPSS trend

Probability

0.89%

Chance of exploitation in the next 30 days

Percentile

59%

Versus all other CVEs

30-day change

No change 0.00 pp

From 0.89% on 04-10-2026

04-10-202603-11-2026

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

Affected systems

Version check

Known conditions: network-reachable, low-privilege account, user interaction (CVSS vector). Other conditions: not stated in public data.

Atlassian2 products
  • confluence_data_center8.9.0 | 8.8.0 to 8.8.1 | 8.7.1 to 8.7.2 | 8.6.0 to 8.6.2 | 8.5.0 to 8.5.8 | 8.4.0 to 8.4.5 | 8.3.0 to 8.3.4 | 8.2.0 to 8.2.3 | 8.1.0 to 8.1.4 | 8.0.0 to 8.0.4 | 7.20.0 to 7.20.3 | 7.19.0 to 7.19.21 | < 7.19.22 | ≥ 7.20.0, < 8.5.9 | ≥ 8.6.0, < 8.9.1
  • confluence_server8.5.0 to 8.5.8 | 8.4.0 to 8.4.5 | 8.3.0 to 8.3.4 | 8.2.0 to 8.2.3 | 8.1.0 to 8.1.4 | 8.0.0 to 8.0.4 | 7.20.0 to 7.20.3 | 7.19.0 to 7.19.21 | < 7.19.22 | ≥ 7.20.0, < 8.5.9

1 vendor · 2 products

References

2 links