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CVE-2026-21577

CVE.org · Published

Historical CVEsJSONAI instructions

Record status
Published
Identifier year (not publication year)
2026
Source publication
Source updated
Imported by cveboard
Source snapshot
cve_2026-10-24_midnight_baseline ·

Plain text

CNA source text (English)

This High severity DoS (Denial of Service) vulnerability was introduced in versions 9.0.1, 9.1.0, 9.2.0, 9.3.1, 9.4.0, 9.5.1, 10.0.2, 10.1.0 and 10.2.0 of Confluence Data Center. This DoS (Denial of Service) vulnerability, with a CVSS Score of 7.1, allows an authenticated attacker to cause a resource to be unavailable for its intended users by temporarily or indefinitely disrupting services of a host connected to a network. Atlassian recommends that Confluence Data Center customers upgrade to latest version, if you are unable to do so, upgrade your instance to one of the specified supported fixed versions: Confluence Data Center 9.2: Upgrade to a release greater than or equal to 9.2.17 Confluence Data Center 10.2: Upgrade to a release greater than or equal to 10.2.7 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 Penetration Testing program.

Scoped product and version facts

Fix information unknown; no fixed version is derived here. Missing information does not prove that no fix exists.

Exploitation unknown; this catalogue does not assess exploitation.

Confluence Data Center

Vendor
Atlassian
Product
Confluence Data Center
Platforms
Unknown
Default status
Unknown
Confluence Data Center · Scoped product and version facts
Version (version)Status (status)Version scheme (versionType)Exclusive end (lessThan)Inclusive end (lessThanOrEqual)Status changes (at → status)
10.2.0 to 10.2.6affectedUnavailableUnavailableUnavailableNone listed
10.1.0 to 10.1.2affectedUnavailableUnavailableUnavailableNone listed
10.0.2 to 10.0.3affectedUnavailableUnavailableUnavailableNone listed
9.5.1 to 9.5.4affectedUnavailableUnavailableUnavailableNone listed
9.4.0 to 9.4.1affectedUnavailableUnavailableUnavailableNone listed
9.3.1 to 9.3.2affectedUnavailableUnavailableUnavailableNone listed
9.2.0 to 9.2.15affectedUnavailableUnavailableUnavailableNone listed
9.1.0 to 9.1.1affectedUnavailableUnavailableUnavailableNone listed
9.0.1 to 9.0.3affectedUnavailableUnavailableUnavailableNone listed
10.2.7 to 10.2.14unaffectedUnavailableUnavailableUnavailableNone listed
9.2.17 to 9.2.22unaffectedUnavailableUnavailableUnavailableNone listed