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Vulnerability record · CVE-2023-22504 · published 25 May 2023

CVE-2023-22504: Atlassian confluence server unrestricted file upload vulnerability

Atlassian · Confluence Server

Affected versions of Atlassian Confluence Server allow remote attackers who have read permissions to a page, but not write permissions, to upload attachments via a Broken Access Control vulnerability in the attachments feature.

6.5 CVSS 3.1 Medium EPSS 0.75% · top 47.0% CWE-434 · Unrestricted file upload
6.5CVSS 3.1 base score
0.75%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

Affected versions of Atlassian Confluence Server allow remote attackers who have read permissions to a page, but not write permissions, to upload attachments via a Broken Access Control vulnerability in the attachments feature.

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:N

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://jira.atlassian.com/browse/CONFSERVER-83218 Vendor Advisory
https://jira.atlassian.com/browse/CONFSERVER-83218 Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.8CVE-2023-22527Atlassian Confluence Data Center and Server template injection RCEOlder versions of Confluence Data Center and Server contain a template injection flaw (CWE-74) that lets an unauthenticated attacker execute code on …KEVEPSS 100%analysed9.8CVE-2023-22518Atlassian Confluence improper authorization allows admin account creationConfluence Data Center and Server contain an improper authorization flaw that lets an unauthenticated attacker reset Confluence and create an instanc…KEVEPSS 100%analysed9.8CVE-2023-22515Atlassian Confluence Data Center and Server broken access control allows admin account creationConfluence Data Center and Server contain a broken access control flaw that lets an unauthenticated external attacker create unauthorized administrat…KEVEPSS 99%analysed9.8CVE-2022-26134Atlassian Confluence Server and Data Center OGNL injection RCEConfluence Server and Data Center contain an OGNL expression language injection flaw that lets an unauthenticated attacker execute arbitrary code on …KEVEPSS 100%analysed9.8CVE-2021-26084Atlassian Confluence Server and Data Center OGNL injection RCEConfluence Server and Data Center contain an OGNL expression language injection flaw that lets an unauthenticated attacker run arbitrary code on the …KEVEPSS 100%analysed9.8CVE-2019-3396Atlassian Confluence Widget Connector path traversal and RCE via SSTIThe Widget Connector macro in Atlassian Confluence Server and Data Center fails to safely handle template input, allowing server-side template inject…KEVEPSS 100%analysed8.8CVE-2019-3398Atlassian Confluence Server path traversal in downloadallattachmentsConfluence Server and Data Center contain a path traversal flaw in the downloadallattachments resource. An attacker with permission to add attachment…KEVEPSS 97%analysed5.3CVE-2021-26085Atlassian Confluence Server pre-auth arbitrary file read via /s/ endpointConfluence Server and Data Center expose a pre-authorization arbitrary file read through the /s/ endpoint, letting unauthenticated remote attackers v…KEVEPSS 100%analysed

Source: NIST National Vulnerability Database (record CVE-2023-22504), CISA KEV, FIRST EPSS (scores of 2026-09-29). This page is refreshed as NVD updates the record.