CVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability

Reference page built from the source records below, each shown as its source publishes it. Dataset version ref-aca79d251cfd, updated 2026-11-02T23:39:54.475Z.

CISA Known Exploited Vulnerabilities

Name: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability
Vendor: Atlassian
Product: Confluence Server/Data Center
Added to the catalog: 2022-06-02
Due date for US federal agencies: 2022-06-06
Weaknesses: CWE-917
Catalog version: 2026.10.30

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

Required action (CISA)

Immediately block all internet traffic to and from affected products AND apply the update per vendor instructions [https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html] OR remove the affected products by the due date on the right. Note: Once the update is successfully deployed, agencies can reassess the internet blocking rules.

Ransomware use: CISA marks this vulnerability as known to be used in ransomware campaigns. CISA does not say which group used it.

Links in CISA's notes

https://nvd.nist.gov/vuln/detail/CVE-2022-26134

Read on 2026-11-02T23:39:54.475Z under licence cisa-kev-cc0@b0067899 from https://www.cisa.gov/sites/default/files/feeds/known_exploited_vulnerabilities.json

NVD analysis

Status: Analyzed
Published: 2022-06-03T22:15:07.717
Last modified: 2026-06-17T04:34:44.940
Weaknesses: CWE-917

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. The affected versions are from 1.3.0 before 7.4.17, from 7.13.0 before 7.13.7, from 7.14.0 before 7.14.3, from 7.15.0 before 7.15.2, from 7.16.0 before 7.16.4, from 7.17.0 before 7.17.4, and from 7.18.0 before 7.18.1.

Metric	Score	Severity	Vector	Scored by
CVSS 3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	[email protected] (Primary)
CVSS 3.1	9.8	CRITICAL	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H	134c704f-9b21-4f2e-91b3-4a467353bcc0 (Secondary)
CVSS 2.0	7.5	HIGH	AV:N/AC:L/Au:N/C:P/I:P/A:P	[email protected] (Primary)

References

http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html (Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html (Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html (Exploit, Third Party Advisory, VDB Entry)
https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html (Vendor Advisory)
https://jira.atlassian.com/browse/CONFSERVER-79016 (Issue Tracking, Patch, Vendor Advisory)
http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.html (Exploit, Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html (Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html (Third Party Advisory, VDB Entry)
http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html (Exploit, Third Party Advisory, VDB Entry)
https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html (Vendor Advisory)
https://jira.atlassian.com/browse/CONFSERVER-79016 (Issue Tracking, Patch, Vendor Advisory)
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26134 (US Government Resource)

This product uses the NVD API but is not endorsed or certified by the NVD.

Read on 2026-11-02T23:41:59.479Z under licence nvd-api-terms-of-use@ff2a5288 from https://services.nvd.nist.gov/rest/json/cves/2.0?cveId=CVE-2022-26134

CVE record

Assigner: atlassian
State: PUBLISHED
Published: 2022-06-03T21:51:57.134Z
Updated: 2025-10-21T23:15:38.769Z
Problem types: Remote Code Execution

References

https://jira.atlassian.com/browse/CONFSERVER-79016
http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html
http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.html
http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html
http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html
https://confluence.atlassian.com/doc/confluence-security-advisory-2022-06-02-1130377146.html

Read on 2026-11-03T02:00:24.566Z under licence cve-terms-of-use@81bfa2f3 from https://raw.githubusercontent.com/CVEProject/cvelistV5/main/cves/2022/26xxx/CVE-2022-26134.json

Detection rules (SigmaHQ)

SigmaHQ rules whose own tags name this CVE. Each rule page shows the rule as its author published it.

Potential OGNL Injection Exploitation In JVM Based Application (status test, level high)
Java Payload Strings (status test, level high)
Atlassian Confluence CVE-2022-26134 (status test, level high)

Defensive techniques (MITRE D3FEND)

D3FEND maps these defensive techniques to the weakness (CWE) that NVD lists for this CVE, through the digital artifacts the weakness affects. D3FEND does not say they stop this vulnerability.

CWE-917: Improper Neutralization of Special Elements used in an Expression Language Statement ('Expression Language Injection')

Harden: Domain Logic Validation (acts on Subroutine)
Harden: Credential Scrubbing (acts on Subroutine)
Harden: Variable Initialization (acts on Subroutine)
Model: Software Inventory (acts on Software)
Restore: Restore Software (acts on Software)
Model: Asset Vulnerability Enumeration (acts on Software)
Harden: Software Update (acts on Software)
Isolate: Application-based Process Isolation (acts on Subroutine)
Harden: Trusted Library (acts on Subroutine)

D3FEND ontology version 1.6.0.

Read on 2026-11-03T00:03:21.049Z under licence d3fend-terms-of-use@f98cbc7e from https://d3fend.mitre.org/api/weakness/cwe/CWE-917.json

MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/

Sources and licences

CISA
Source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30, CC0 1.0. Use of this data does not imply endorsement by CISA or DHS.
CC0 1.0 Universal
National Vulnerability Database (NIST)
This product uses the NVD API but is not endorsed or certified by the NVD.
NVD API Terms of Use (NIST publications in the public domain, 17 U.S.C. 105)
CVE Program, The MITRE Corporation
Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation. CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.
CVE Program Terms of Use ("CVE Usage" licence)
SigmaHQ
"Potential OGNL Injection Exploitation In JVM Based Application" by Moti Harmats (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/application/jvm/java_ognl_injection_exploitation_attempt.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1
SigmaHQ
"Java Payload Strings" by frack113, Harjot Singh, "@cyb3rjy0t" (update) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules/web/webserver_generic/web_java_payload_in_access_logs.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1
SigmaHQ
"Atlassian Confluence CVE-2022-26134" by Nasreddine Bencherchali (Nextron Systems) (SigmaHQ). Rule: https://github.com/SigmaHQ/sigma/blob/ccbb0369507f796db0b0ae6854c8a2be471b9d84/rules-emerging-threats/2022/Exploits/CVE-2022-26134/proc_creation_lnx_exploit_cve_2022_26134_atlassian_confluence.yml.
Licensed under the Detection Rule License (DRL) 1.1: https://github.com/SigmaHQ/Detection-Rule-License
Detection Rule License (DRL) 1.1
MITRE D3FEND
MITRE D3FEND™ knowledge graph. © 2025 The MITRE Corporation.
"The MITRE Corporation (MITRE) hereby grants you a non-exclusive, royalty-free license to use D3FEND for research, development, and commercial purposes. Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy." Terms: https://d3fend.mitre.org/tou/
MITRE D3FEND Terms of Use (site + knowledge graph); source repo MIT

Cite this page

Dragons Eye Ransomware Tracker, "CVE-2022-26134: Atlassian Confluence Server and Data Center Remote Code Execution Vulnerability",
entity page, dataset version ref-aca79d251cfd, updated 2026-11-02T23:39:54.475Z,
https://ransomware-tracker.com/cve/CVE-2022-26134 (accessed 2026-11-03).
Underlying source: CISA Catalog of Known Exploited Vulnerabilities, version 2026.10.30.
Underlying source: National Vulnerability Database (NIST), CVE API 2.0, record last modified 2026-06-17T04:34:44.940.
Underlying source: CVE List (CVE Program, The MITRE Corporation), record updated 2025-10-21T23:15:38.769Z.
Underlying source: SigmaHQ rule 4d0af518-828e-4a04-a751-a7d03f3046ad, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: SigmaHQ rule 583aa0a2-30b1-4d62-8bf3-ab73689efe6c, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: SigmaHQ rule 7fb14105-530e-4e2e-8cfb-99f7d8700b66, commit ccbb0369507f796db0b0ae6854c8a2be471b9d84.
Underlying source: MITRE D3FEND, ontology version 1.6.0.

Pages change. The dataset version identifies the data, but no archive of old versions is kept, so this citation cannot be replayed later.

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