HOMEVULNERABILITIESCVE-2024-21678
HIGH

CVE-2024-21678

CWE-79Published: February 20, 2024· Updated: Jun 17, 2026

8.5
CVSS v3.1

Official Description

This High severity Stored XSS vulnerability was introduced in version 2.7.0 of Confluence Data Center.

This Stored XSS vulnerability, with a CVSS Score of 8.5, allows an authenticated attacker to execute arbitrary HTML or JavaScript code on a victims browser which has high impact to confidentiality, low impact to integrity, no impact to availability, and requires no user interaction.

Data Center

Atlassian recommends that Confluence Data Center customers upgrade to the latest version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:

||Affected versions||Fixed versions||

|from 8.7.0 to 8.7.1|8.8.0 recommended or 8.7.2|

|from 8.6.0 to 8.6.1|8.8.0 recommended|

|from 8.5.0 to 8.5.4 LTS|8.8.0 recommended or 8.5.5 LTS or 8.5.6 LTS|

|from 8.4.0 to 8.4.5|8.8.0 recommended or 8.5.6 LTS|

|from 8.3.0 to 8.3.4|8.8.0 recommended or 8.5.6 LTS|

|from 8.2.0 to 8.2.3|8.8.0 recommended or 8.5.6 LTS|

|from 8.1.0 to 8.1.4|8.8.0 recommended or 8.5.6 LTS|

|from 8.0.0 to 8.0.4|8.8.0 recommended or 8.5.6 LTS|

|from 7.20.0 to 7.20.3|8.8.0 recommended or 8.5.6 LTS|

|from 7.19.0 to 7.19.17 LTS|8.8.0 recommended or 8.5.6 LTS or 7.19.18 LTS or 7.19.19 LTS|

|from 7.18.0 to 7.18.3|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|

|from 7.17.0 to 7.17.5|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|

|Any earlier versions|8.8.0 recommended or 8.5.6 LTS or 7.19.19 LTS|

Server

Atlassian recommends that Confluence Server customers upgrade to the latest 8.5.x LTS version. If you are unable to do so, upgrade your instance to one of the specified supported fixed versions:

 

||Affected versions||Fixed versions||

|from 8.5.0 to 8.5.4 LTS|8.5.5 LTS or 8.5.6 LTS recommended |

|from 8.4.0 to 8.4.5|8.5.6 LTS recommended|

|from 8.3.0 to 8.3.4|8.5.6 LTS recommended|

|from 8.2.0 to 8.2.3|8.5.6 LTS recommended|

|from 8.1.0 to 8.1.4|8.5.6 LTS recommended|

|from 8.0.0 to 8.0.4|8.5.6 LTS recommended|

|from 7.20.0 to 7.20.3|8.5.6 LTS recommended|

|from 7.19.0 to 7.19.17 LTS|8.5.6 LTS recommended or 7.19.18 LTS or 7.19.19 LTS|

|from 7.18.0 to 7.18.3|8.5.6 LTS recommended or 7.19.19 LTS|

|from 7.17.0 to 7.17.5|8.5.6 LTS recommended or 7.19.19 LTS|

|Any earlier versions|8.5.6 LTS recommended or 7.19.19 LTS|

See the release notes ([https://confluence.atlassian.com/doc/confluence-release-notes-327.html]). You can download the latest version of Confluence Data Center from the download center ([https://www.atlassian.com/software/confluence/download-archives]).

This vulnerability was reported via our Bug Bounty program.

NVD Source

Technical Analysis

CVE-2024-21678 can be exploited remotely over the network without requiring physical or adjacent access, significantly expanding the attack surface for threat actors.

Exploitation requires low privileges, which limits the exposure to scenarios where an attacker has already gained initial access.

A successful exploit results in complete confidentiality breach (data exposure), with a CVSS base score of 8.5.

The vulnerability has a "Changed" scope, meaning successful exploitation can impact components beyond the vulnerable component itself — such as the host operating system or adjacent services.

From a weakness classification perspective (CWE-79): Cross-site scripting (XSS) vulnerabilities allow attackers to inject malicious scripts into web pages viewed by other users.

CVSS v3.1 Vector Breakdown

Exploitability
Attack VectorNetwork
Attack ComplexityLow
Privileges Req.Low
User InteractionNone
ScopeChanged
Impact
ConfidentialityHigh
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:L/A:N

Affected Vendors & Products

Atlassian2 product(s)
confluence data centerconfluence server
Source: NVD CPE · 2 total CPE entries

Exploit & PoC Resources

NO KNOWN EXPLOITNo public exploit confirmed at this time
Exploit-DB
Offensive Security exploit database
GitHub PoC Search
Community PoC repositories
Rapid7 / Metasploit
Metasploit module search
PacketStorm
Security advisories & exploits
NVD Detail
Official NIST entry
MITRE CVE
CVE Program entry
External links open in a new tab. Always verify in a controlled environment before use.

Official Patches & Advisories

ADVISORYhttps://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606
ADVISORYhttps://jira.atlassian.com/browse/CONFSERVER-94513
ADVISORYhttps://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606
ADVISORYhttps://jira.atlassian.com/browse/CONFSERVER-94513

All References (4)

→
https://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606Vendor Advisory
→
https://jira.atlassian.com/browse/CONFSERVER-94513Issue Tracking · Vendor Advisory
→
https://confluence.atlassian.com/pages/viewpage.action?pageId=1354501606Vendor Advisory
→
https://jira.atlassian.com/browse/CONFSERVER-94513Issue Tracking · Vendor Advisory

Quick Facts

CVE IDCVE-2024-21678
CVSS Score8.5 / 10
SeverityHIGH
WeaknessCWE-79
CISA KEVNo
Affected1 vendor(s)
PublishedFeb 20, 2024

Related CVEs (CWE-79)

CVE-2023-0776
10.0
CVE-2025-49410
10.0
CVE-2021-32671
10.0
CVE-2024-6886
10.0
CVE-2011-3046
10.0
CVE-2026-40472
9.9

Recommended Actions

  • →Apply vendor patches immediately
  • →Monitor CVE-2024-21678 in threat intel feeds
  • →Review IDS/IPS signatures for exploitation attempts
Data sourced from NVD (NIST), CISA KEV, and EPSS (FIRST). Analysis generated by CTIWATCH.COM. CVE data is provided under the NVD usage policy.
← All Vulnerabilities·Search for CVE-2024-21678·NVD