# CVE-2022-26134 — Atlassian Confluence Data Center **CISA KEV** · **Ransomware** > As of 2025-10-21, CVE-2022-26134 is a CRITICAL-severity vulnerability in Atlassian Confluence Data Center, CVSS v3.1 9.8, EPSS 99.9% (99.9th percentile). It is listed in the CISA Known Exploited Vulnerabilities catalog (added 2022-06-02), with a US federal remediation deadline of 2022-06-06, and CISA links it to known ransomware campaigns. Threadlinqs Intelligence links 2 tracked threat campaigns to CVE-2022-26134, most recently “Evooo1Bot: Multi-Functional Mirai-Based Linux Botnet Exploiting 18 Known CVEs in Internet-Facing Devices”. **Last updated:** 2025-10-21 ## What is CVE-2022-26134? 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. The record classifies CVE-2022-26134 under weakness class [CWE-917](https://intel.threadlinqs.com/cwe/CWE-917). Its CVSS v3 base vector states that the flaw is reachable remotely over the network, needs no prior authentication, needs no user interaction, and has high impact on confidentiality, integrity, availability. 2 affected-product entries are recorded, across 1 vendor, listed below. The identifier was first published 1590 days ago. ## Severity and exploitation probability - **CVSS v3.1 base score:** 9.8 — CRITICAL (`CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H`) - **EPSS (FIRST):** 99.9% probability of exploitation in the next 30 days, higher than 99.9% of all scored CVEs - **CISA KEV:** Listed since 2022-06-02, federal remediation deadline 2022-06-06 — used in known ransomware campaigns - **Threadlinqs priority:** 10/10 — CISA lists it as used in ransomware, which Threadlinqs scores at the maximum - **Published:** 2022-06-03, last modified 2025-10-21 ## Is CVE-2022-26134 being exploited? CISA added CVE-2022-26134 to the Known Exploited Vulnerabilities catalog on 2022-06-02, which means the agency holds evidence of exploitation in the wild; US federal civilian agencies had to remediate it by 2022-06-06 under BOD 22-01. CISA flags the vulnerability as one used in known ransomware campaigns. Weaponised exploit code for CVE-2022-26134 is publicly available. 11 public proof-of-concept repositories are tracked for this identifier. A ProjectDiscovery Nuclei detection template exists (`http/cves/2022/CVE-2022-26134.yaml`). It currently carries a trending score of 50 in the Threadlinqs vulnerability feed. - [W01fh4cker/Serein](https://github.com/W01fh4cker/Serein) (github) - [BeichenDream/CVE-2022-26134-Godzilla-MEMSHELL](https://github.com/BeichenDream/CVE-2022-26134-Godzilla-MEMSHELL) (github) - [jbaines-r7/through_the_wire](https://github.com/jbaines-r7/through_the_wire) (github) - [hev0x/CVE-2022-26134](https://github.com/hev0x/CVE-2022-26134) (github) - [crowsec-edtech/CVE-2022-26134](https://github.com/crowsec-edtech/CVE-2022-26134) (github) - [nxtexploit/CVE-2022-26134](https://github.com/nxtexploit/CVE-2022-26134) (github) - [SNCKER/CVE-2022-26134](https://github.com/SNCKER/CVE-2022-26134) (github) - [SIFalcon/confluencePot](https://github.com/SIFalcon/confluencePot) (github) ## Affected products and versions - [Atlassian](https://intel.threadlinqs.com/vendors/atlassian): Confluence Data Center, Confluence Server ## How to fix CVE-2022-26134 Because CVE-2022-26134 is KEV-listed, US federal civilian agencies were required to apply the vendor fix, or stop using the product, by 2022-06-06. No vendor patch reference has been recorded for CVE-2022-26134 in the tracked sources. Follow the references below for a fix, and treat the products listed above as exposed until the vendor states otherwise. ## Threat activity tracking CVE-2022-26134 2 tracked threats in the Threadlinqs corpus reference CVE-2022-26134, either in the campaign’s CVE list or as an indicator on the campaign record. - [Evooo1Bot: Multi-Functional Mirai-Based Linux Botnet Exploiting 18 Known CVEs in Internet-Facing Devices](https://intel.threadlinqs.com/threat/TL-2026-3062) — HIGH · 2026-10-09 - [CVE-2026-34486: Apache Tomcat EncryptInterceptor Bypass Actively Exploited in SnowLight and AI-Assisted Campaigns](https://intel.threadlinqs.com/threat/TL-2026-1885) — HIGH · 2026-08-05 ## Sources Enriched from CVE.org, FIRST EPSS, CISA KEV, GitHub Security Advisories, public proof-of-concept repositories, ProjectDiscovery Nuclei. Last verified by Threadlinqs on 2026-10-10. **Other references** - [jira.atlassian.com](https://jira.atlassian.com/browse/CONFSERVER-79016) - [packetstormsecurity.com](http://packetstormsecurity.com/files/167432/Confluence-OGNL-Injection-Proof-Of-Concept.html) - [packetstormsecurity.com (Confluence OGNL Injection Remote Code Ex)](http://packetstormsecurity.com/files/167430/Confluence-OGNL-Injection-Remote-Code-Execution.html) - [packetstormsecurity.com (Through The Wire CVE 2022 26134 Confluen)](http://packetstormsecurity.com/files/167431/Through-The-Wire-CVE-2022-26134-Confluence-Proof-Of-Concept.html) - [packetstormsecurity.com (Atlassian Confluence Namespace OGNL Inje)](http://packetstormsecurity.com/files/167449/Atlassian-Confluence-Namespace-OGNL-Injection.html) _Showing 5 of 6 recorded references._ Canonical: https://intel.threadlinqs.com/cve/CVE-2022-26134 Full detection coverage and IOCs for threats exploiting CVE-2022-26134 via the Threadlinqs MCP server (Purple tier): https://intel.threadlinqs.com/mcp