CVE-2026-21569

highpriority · track · 0EPSS 0.003 · 26 %ileDEEUNLUS

grimoire priorityP2 · Scheduled

Exploitable?

—

no known exploitation

Likely / severe?

0.33% (26th) EPSS

CVSS 7.9 · high

Is it mine?

47 products

Check your exposure

Who says so?

4 sources

cnnvd · enisa_euvd · cert_bund · ncsc_nl

EPSS · scored 2026-10-22

This High severity XXE (XML External Entity Injection) vulnerability was introduced in version 7.1.0 of Crowd Data Center and Server. This XXE (XML External Entity Injection) vulnerability, with a CVSS Score of 7.9, allows an authenticated attacker to access local and remote content which has high impact to confidentiality, low impact to integrity, high impact to availability, and requires no user interaction. Atlassian recommends that Crowd 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: * Crowd Data Center and Server 7.1: Upgrade to a release greater than or equal to 7.1.3 See the release notes (https://confluence.atlassian.com/crowd/crowd-release-notes-199094.html). You can download the latest version of Crowd Data Center and Server from the download center (https://www.atlassian.com/software/crowd/download-archive). This vulnerability was reported via our Atlassian (Internal) program.

cvss

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

7.9

010

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

v3.07.9highCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:Hsecondary · ENISA EU

v3.07.9highCVSS:3.0/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:L/A:Hsecondary · security@atlassian.comexploitability 1.3 · impact 6

ssvc

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

Trackcoordinatorcisa_ssvcUS

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-611US

affected products (47)

Products and version ranges known to be affected.

Atlassian Bamboo <10.2.16 (LTS)all versionscert_bundDE
Atlassian Bamboo <12.1.3 (LTS)all versionscert_bundDE
Atlassian Bamboo <9.6.24 (LTS)all versionscert_bundDE
Atlassian Bamboo Data Center <10.2.13all versionscert_bundDE
Atlassian Bamboo Data Center <12.0.2all versionscert_bundDE
Atlassian Bamboo Data Center <9.6.21all versionscert_bundDE
Atlassian Bitbucket <10.1.5all versionscert_bundDE
Atlassian Bitbucket <10.2.0 to 10.2.1all versionscert_bundDE
Atlassian Bitbucket <9.4.17 to 9.4.18all versionscert_bundDE
Atlassian Bitbucket Data Center <10.1.1all versionscert_bundDE
Atlassian Bitbucket Data Center <8.19.26all versionscert_bundDE
Atlassian Bitbucket Data Center <9.4.15all versionscert_bundDE
Atlassian Confluence Data Center <10.2.2all versionscert_bundDE
Atlassian Confluence Data Center <9.2.13all versionscert_bundDE
Atlassian Jira <9.12.26all versionscert_bundDE
Atlassian Jira Data Center <10.3.16all versionscert_bundDE
Atlassian Jira Data Center <11.2.1all versionscert_bundDE
Atlassian Jira Data Center <11.3.0all versionscert_bundDE
Dell Data Protection Advisor <19.12all versionscert_bundDE
Atlassian Bamboo≤ Data Center <10.2.13cert_bundDE

showing 20 of 47

advisories (2)

Vendor and ecosystem advisories describing this.

NCSC-2026-0034Kwetsbaarheden verholpen in Atlassian productenNL2026-01-22csaf · ncsc_nlNL
Atlassian heeft kwetsbaarheden verholpen in verschillende producten, welke gebruik maken van Oracle middle-ware producten zoals de Oracle Utilities Application Framework, WebLogic Server, Data Integrator en Business Intelligence Enterprise Edition.
WID-SEC-W-2026-0177Atlassian Bamboo, Bitbucket, Confluence und Jira: Mehrere SchwachstellenDeutsch2026-01-20csaf · cert_bundDE
Ein Angreifer kann mehrere Schwachstellen in Atlassian Bamboo, Atlassian Bitbucket, Atlassian Confluence und Atlassian Jira ausnutzen, um beliebigen Programmcode auszuführen, um Sicherheitsvorkehrungen zu umgehen, um einen Denial of Service Angriff durchzuführen, und um einen Cross-Site Scripting 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 ncsc_nl NVD CVE.org MITRE

published 2026-01-28modified 2026-06-17

references (7)

External citations — patches, advisories, analysis.

scry

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