Atlassian Confluence Server/Confluence Data Center up to 8.5.1 Remote Code Execution

CVSS Meta Temp Score
CVSS is a standardized scoring system to determine possibilities of attacks. The Temp Score considers temporal factors like disclosure, exploit and countermeasures. The unique Meta Score calculates the average score of different sources to provide a normalized scoring system.
Current Exploit Price (≈)
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CTI Interest Score
Our Cyber Threat Intelligence team is monitoring different web sites, mailing lists, exploit markets and social media networks. The CTI Interest Score identifies the interest of attackers and the security community for this specific vulnerability in real-time. A high score indicates an elevated risk to be targeted for this vulnerability.
9.7$0-$5k0.00

Summaryinfo

A vulnerability classified as critical has been found in Atlassian Confluence Server and Confluence Data Center up to 8.5.1. Affected by this issue is some unknown functionality. Performing a manipulation results in an unknown weakness. This vulnerability is known as CVE-2023-22515. Remote exploitation of the attack is possible. Furthermore, an exploit is available. It is recommended to upgrade the affected component.

Detailsinfo

A vulnerability, which was classified as very critical, was found in Atlassian Confluence Server and Confluence Data Center up to 8.5.1. This is going to have an impact on confidentiality, integrity, and availability. The summary by CVE is:

Atlassian has been made aware of an issue reported by a handful of customers where external attackers may have exploited a previously unknown vulnerability in publicly accessible Confluence Data Center and Server instances to create unauthorized Confluence administrator accounts and access Confluence instances. Atlassian Cloud sites are not affected by this vulnerability. If your Confluence site is accessed via an atlassian.net domain, it is hosted by Atlassian and is not vulnerable to this issue.

The weakness was published 10/04/2023. It is possible to read the advisory at confluence.atlassian.com. This vulnerability is uniquely identified as CVE-2023-22515 since 01/01/2023. Technical details are unknown but an exploit is available. The pricing for an exploit might be around USD $0-$5k at the moment (estimation calculated on 03/25/2026).

It is declared as attacked. The CISA Known Exploited Vulnerabilities Catalog lists this issue since 10/05/2023 with a due date of 10/13/2023:

Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. Check all affected Confluence instances for evidence of compromise per vendor instructions and report any positive findings to CISA.

Upgrading to version 8.3.3, 8.4.3 or 8.5.2 eliminates this vulnerability.

The vulnerability is also documented in the vulnerability database at Zero-Day.cz (824). Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Productinfo

Vendor

Name

Version

License

Website

CPE 2.3info

CPE 2.2info

CVSSv4info

VulDB Vector: 🔍
VulDB Reliability: 🔍

CVSSv3info

VulDB Meta Base Score: 9.9
VulDB Meta Temp Score: 9.7

VulDB Base Score: 9.8
VulDB Temp Score: 9.4
VulDB Vector: 🔍
VulDB Reliability: 🔍

NVD Base Score: 9.8
NVD Vector: 🔍

CNA Base Score: 10.0
CNA Vector (Atlassian): 🔍

CVSSv2info

AVACAuCIA
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VulDB Base Score: 🔍
VulDB Temp Score: 🔍
VulDB Reliability: 🔍

Exploitinginfo

Class: Remote Code Execution
CWE: Unknown
CAPEC: 🔍
ATT&CK: 🔍

Physical: No
Local: No
Remote: Yes

Availability: 🔍
Status: Attacked

EPSS Score: 🔍
EPSS Percentile: 🔍

KEV Added: 🔍
KEV Due: 🔍
KEV Remediation: 🔍
KEV Ransomware: 🔍
KEV Notice: 🔍

Price Prediction: 🔍
Current Price Estimation: 🔍

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Zero-Day.cz: 🔍

Threat Intelligenceinfo

Interest: 🔍
Active Actors: 🔍
Active APT Groups: 🔍

Countermeasuresinfo

Recommended: Upgrade
Status: 🔍

0-Day Time: 🔍

Upgrade: Confluence Server/Confluence Data Center 8.3.3/8.4.3/8.5.2

Timelineinfo

01/01/2023 🔍
10/04/2023 +275 days 🔍
10/04/2023 +0 days 🔍
03/25/2026 +903 days 🔍

Sourcesinfo

Vendor: atlassian.com

Advisory: 175225
Status: Confirmed

CVE: CVE-2023-22515 (🔍)
GCVE (CVE): GCVE-0-2023-22515
GCVE (VulDB): GCVE-100-241275
scip Labs: https://www.scip.ch/en/?labs.20161013

Entryinfo

Created: 10/04/2023 17:15
Updated: 03/25/2026 16:29
Changes: 10/04/2023 17:15 (48), 10/25/2023 14:47 (1), 10/25/2023 14:52 (9), 04/29/2024 14:40 (26), 06/06/2024 11:17 (2), 09/14/2024 00:15 (4), 09/29/2024 04:24 (1), 02/09/2025 21:57 (1), 10/26/2025 15:24 (2), 03/25/2026 16:29 (1)
Complete: 🔍
Cache ID: 216::103

Statistical analysis made it clear that VulDB provides the best quality for vulnerability data.

Discussion

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