Confluence Server vulnerabilitiesAnd the versions its exploited flaws hit.

Product9 known exploited490 versions
The short answer

Confluence Server is made by Atlassian. We track 47 published vulnerabilities in it, across 490 versions. 9 of them are on the list of flaws known to be exploited, the newest added on 24 January 2024. If you run Confluence Server, check your version against the exploited flaws below and patch those first.

Check your version

The most recent Confluence Server flaw added to the known-exploited list is CVE-2023-22527, on 24 January 2024. We keep watching the known-exploited list.

Versions

Which versions of Confluence Server do the exploited flaws hit?

Each exploited flaw lists the versions it affects, usually as ranges. "8.0.0 to before 8.5.4" means from 8.0.0 up to, but not including, 8.5.4. Find your version, then patch.

  • CVE-2023-22527Exploited list, 24 Jan 2024

    Atlassian Confluence Data Center and Server Template Injection Vulnerability

    8.0.0 to before 8.5.4
  • CVE-2023-22518Exploited list, 7 Nov 2023

    Atlassian Confluence Data Center and Server Improper Authorization Vulnerability

    1.0 to before 7.19.167.20.0 to before 8.3.48.4.0 to before 8.4.48.5.0 to before 8.5.38.6.0
  • CVE-2023-22515Exploited list, 5 Oct 2023

    Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

    8.0.0 to before 8.3.38.4.0 to before 8.4.38.5.0 to before 8.5.2
  • CVE-2022-26134Exploited list, 2 Jun 2022

    Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability

    1.3 to before 7.4.177.13.0 to before 7.13.77.14.0 to before 7.14.37.15.0 to before 7.15.27.16.0 to before 7.16.47.17.0 to before 7.17.47.18.0
  • CVE-2021-26085Exploited list, 28 Mar 2022

    Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

    before 7.4.107.5.0 to before 7.12.3
  • CVE-2019-3396Exploited list, 3 Nov 2021

    Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability

    before 6.6.126.7.0 to before 6.12.36.13.0 to before 6.13.36.14.0 to before 6.14.2
  • CVE-2021-26084Exploited list, 3 Nov 2021

    Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability

    before 6.13.236.14.0 to before 7.4.117.5.0 to before 7.11.67.12.0 to before 7.12.5
  • CVE-2019-3398Exploited list, 3 Nov 2021

    Atlassian Confluence Server and Data Center Path Traversal Vulnerability

    2.0 to before 6.6.136.7.0 to before 6.12.46.13.0 to before 6.13.46.14.0 to before 6.14.36.15.0 to before 6.15.2

1 more exploited flaw names Confluence Server without a version of its own, for example as the system other affected software runs on. It is in the list below.

Known exploited

Which Confluence Server vulnerabilities are being exploited?

9 flaws are on the government list of vulnerabilities known to be exploited. These are the ones criminals are using now, so they go first, whatever their severity score says.

  1. 9.8
    CVE-2023-22527CriticalKnown exploited
    Atlassian Confluence Data Center and Server Template Injection Vulnerability

    Atlassian Confluence Data Center and Server contain an unauthenticated OGNL template injection vulnerability that can lead to remote code execution.

    Chance of use>99%Known exploited since24 Jan 2024
  2. 9.8
    CVE-2023-22518CriticalKnown exploited
    Atlassian Confluence Data Center and Server Improper Authorization Vulnerability

    Atlassian Confluence Data Center and Server contain an improper authorization vulnerability that can result in significant data loss when exploited by an unauthenticated attacker.

    Chance of use>99%Known exploited since7 Nov 2023
  3. 9.8
    CVE-2023-22515CriticalKnown exploited
    Atlassian Confluence Data Center and Server Broken Access Control Vulnerability

    Atlassian Confluence Data Center and Server contains a broken access control vulnerability that allows an attacker to create unauthorized Confluence administrator accounts and access Confluence.

    Chance of use>99%Known exploited since5 Oct 2023
  4. 9.8
    CVE-2022-26138CriticalKnown exploited
    Atlassian Questions For Confluence App Hard-coded Credentials Vulnerability

    Atlassian Questions For Confluence App has hard-coded credentials, exposing the username and password in plaintext.

    Chance of use98%Known exploited since29 Jul 2022
  5. 9.8
    CVE-2022-26134CriticalKnown exploited
    Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability

    Atlassian Confluence Server and Data Center contain a remote code execution vulnerability that allows for an unauthenticated attacker to perform remote code execution.

    Chance of use>99%Known exploited since2 Jun 2022
  6. 5.3
    CVE-2021-26085MediumKnown exploited
    Atlassian Confluence Server Pre-Authorization Arbitrary File Read Vulnerability

    Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a pre-authorization arbitrary file read vulnerability in the /s/ endpoint.

    Chance of use>99%Known exploited since28 Mar 2022
  7. 9.8
    CVE-2019-3396CriticalKnown exploited
    Atlassian Confluence Server and Data Center Server-Side Template Injection Vulnerability

    Atlassian Confluence Server and Data Center contain a server-side template injection vulnerability that may allow an attacker to achieve path traversal and remote code execution.

    Chance of use>99%Known exploited since3 Nov 2021
  8. 9.8
    CVE-2021-26084CriticalKnown exploited
    Atlassian Confluence Server and Data Center Object-Graph Navigation Language (OGNL) Injection Vulnerability

    Atlassian Confluence Server and Data Server contain an Object-Graph Navigation Language (OGNL) injection vulnerability that may allow an unauthenticated attacker to execute code.

    Chance of use>99%Known exploited since3 Nov 2021
Exploit likelihood

Which Confluence Server flaws are most likely to be used?

Ranked by the latest exploit-likelihood forecast: the chance each flaw is used in an attack in the next 30 days. A high severity score on its own doesn't tell you that. Flaws shared by many other makers' products are left out.

50% or more10% to 49%Under 10%
  1. >99%
    CVE-2022-26134CriticalKnown exploited

    In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance.

    CVSS9.8Published3 Jun 2022
  2. >99%
    CVE-2021-26084CriticalKnown exploited

    In affected versions of Confluence Server and Data Center, an OGNL injection vulnerability exists that would allow an unauthenticated attacker to execute arbitrary code on a Confluence Server or Data Center instance.

    CVSS9.8Published30 Aug 2021
  3. >99%
    CVE-2023-22518CriticalKnown exploited

    All versions of Confluence Data Center and Server are affected by this unexploited vulnerability.

    CVSS9.8Published31 Oct 2023
  4. >99%
    CVE-2023-22527CriticalKnown exploited

    A template injection vulnerability on older versions of Confluence Data Center and Server allows an unauthenticated attacker to achieve RCE on an affected instance.

    CVSS9.8Published16 Jan 2024
  5. >99%
    CVE-2021-26085MediumKnown exploited

    Affected versions of Atlassian Confluence Server allow remote attackers to view restricted resources via a Pre-Authorization Arbitrary File Read vulnerability in the /s/ endpoint.

    CVSS5.3Published3 Aug 2021
  6. >99%
    CVE-2019-3396CriticalKnown exploited

    The Widget Connector macro in Atlassian Confluence Server before version 6.6.12 (the fixed version for 6.6.x), from version 6.7.0 before 6.12.3 (the fixed version for 6.12.x), from version 6.13.0 before 6.13.3 (the...

    CVSS9.8Published25 Mar 2019
  7. >99%
    CVE-2023-22515CriticalKnown exploited

    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...

    CVSS9.8Published4 Oct 2023
  8. 98%
    CVE-2022-26138CriticalKnown exploited

    The Atlassian Questions For Confluence app for Confluence Server and Data Center creates a Confluence user account in the confluence-users group with the username disabledsystemuser and a hardcoded password.

    CVSS9.8Published20 Jul 2022
  9. 97%
    CVE-2019-3398HighKnown exploited

    Confluence Server and Data Center had a path traversal vulnerability in the downloadallattachments resource.

    CVSS8.8Published18 Apr 2019
  10. 88%

    This High severity RCE (Remote Code Execution) vulnerability was introduced in version 5.2 of Confluence Data Center and Server.

    CVSS8.8Published21 May 2024
Precursor Intelligence

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FAQ

Common questions, answered plainly.

Something else? Talk to the team →

We track 47 published vulnerabilities listed under the name Confluence Server, across 490 versions. The most recent Confluence Server flaw added to the known-exploited list is CVE-2023-22527, on 24 January 2024.

9 are on the list of flaws known to be exploited. The most recently added are CVE-2023-22527, CVE-2023-22518 and CVE-2023-22515.

Each flaw names its own versions, usually as ranges. The newest, CVE-2023-22527, affects 8.0.0 to before 8.5.4. The versions for every exploited flaw are listed on this page.

Create a Precursor Intelligence account and track Confluence Server. We match it against every published flaw, give each one a risk score from 0 to 100 and keep watching, so you hear about new ones as soon as we know, by email, in the app or by webhook.