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CVE-2026-21589critical9.3 Known exploited

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center.

Impact

An unauthenticated attacker can access specific files in the web application root directory of affected Atlassian products, including Bitbucket Data Center, Confluence Data Center, and Jira Software Data Center, if they have prior knowledge of the target file's exact name and path. The vulnerability affects various versions of these products. Exploitation does not allow directory enumeration.

Summarized by @cf/meta/llama-3.3-70b-instruct-fp8-fast. Verify details against the original sources.
Applies when

Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path.

Affected packages

This source has no supported package-version data for matching. You can read the advisory here, but this record alone cannot power a dependency check.

Affected products

Vendor version evidence. Product records are separate from automatic dependency matching.

Atlassian · atlassian

Bamboo Data Center

3 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 10.2.24 and later

Patch version 12.1.12 and later

unknown

Other versions: unknown

Atlassian · atlassian

Bitbucket Data Center

4 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 10.2.8 and later

Patch version 10.5.1 and later

Patch version 9.4.26 and later

unknown

Other versions: unknown

Atlassian · atlassian

Confluence Data Center

3 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 10.2.19 and later

Patch version 9.2.26 and later

unknown

Other versions: unknown

Atlassian · atlassian

Crowd Data Center

5 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 7.2.4 and later

Patch version 7.1.7 and later

Patch version 7.0.3 and later

Patch version 6.3.7 and later

unknown

Other versions: unknown

Atlassian · atlassian

Crucible Data Center

2 ranges

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affected

All other versions

unaffected

Patch version 4.9.15 and later

unknown

Other versions: unknown

Atlassian · atlassian

Fisheye Data Center

2 ranges

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affected

All other versions

unaffected

Patch version 4.9.15 and later

unknown

Other versions: unknown

Atlassian · atlassian

Jira Service Management Data Center

4 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 11.3.12 and later

Patch version 10.3.26 and later

Patch version 5.12.40 and later

unknown

Other versions: unknown

Atlassian · atlassian

Jira Software Data Center

4 ranges

Compare with this publisher’s ranges. This does not inspect your installation.

affected

All other versions

unaffected

Patch version 11.3.12 and later

Patch version 10.3.26 and later

Patch version 9.12.40 and later

unknown

Other versions: unknown

Original source description

This is a vulnerability in Bitbucket Data Center, Confluence Data Center, Jira Service Management Data Center, Jira Software Data Center, Bamboo Data Center. Crowd Data Center, Crucible and Fisheye. This Arbitrary File Access vulnerability allows an unauthenticated attacker to access specific files within the web application root directory in affected versions. Exploitation requires prior knowledge of the target file's exact name and path; this vulnerability does not allow attackers to enumerate or list directory contents. In some configurations, there may be some sensitive files that make this highly severe. This vulnerability allows an unauthenticated remote attacker to access specific files within the web application root directory in affected versions. The vulnerability must be addressed for affected versions of: -- Bitbucket Data Center, introduced in version >= 4.6.0, fix versions: 9.4.26, 10.2.8, 10.5.1 -- Confluence Data Center, introduced in version >= 5.10.0, fix versions 9.2.26, 10.2.19 -- Crowd Data Center, introduced in version >= 2.11.0, fix versions 6.3.7, 7.0.3, 7.1.7, 7.2.4 -- Jira Software Data Center, introduced in version >= 7.1.0, fix versions 9.12.40, 10.3.26, 11.3.12 -- Jira Service Management Data Center, introduced in version >= 3.1.0, fix versions 5.12.40, 10.3.26, 11.3.12 -- Bamboo Data Center >= 7.0.1, fix versions 10.2.24, 12.1.12 -- Crucible, fix versions 4.9.15 -- Fisheye, fix version 4.9.15 -- Exploitation requires prior knowledge of the target file's exact name and path. The vulnerability does not include the capability to enumerate or list directory contents.

Inside the record

Evidence available

Package identity · not supplied
Version evidence
Remediation guidance · not supplied
Weakness classification
Additional publishers

Describes the evidence in this view, not whether the product is safe.

Original records

CVE-2026-21589

View the latest unmodified CVE JSON from the official source. It may be newer than this imported page.

cve.new JSON →

Underlying weaknesses

The source’s classification of what caused the vulnerability.

CWE-552 ↗

CWE-552 Files or Directories Accessible to External Parties

CISA-ADP

Related →
Contributing organizations · 2
atlassian

Assigning organization

2026-10-19
CISA-ADP

Additional data publisher

2026-10-29

What changed

Follow changes
No substantive changes have been recorded here yet. History starts when cve.new observes a change after tracking is enabled; earlier edits are not reconstructed.

Large field values are marked as truncated previews. Original source snapshots remain retained.

References

10 sources