Security readout for executives and security teams
Plain-English summary
This flaw lets a logged-in Confluence user on affected Atlassian Confluence Server or Data Center versions run arbitrary Java code or system commands. That can lead to full compromise of the Confluence host and the data it can access.
Executive priority
Treat this as a high-priority remediation for any internet-facing or broadly accessible Confluence deployment. The vulnerability requires a valid account, but successful abuse could compromise the server and sensitive collaboration data.
Technical view
CVE-2021-39114 is an OGNL injection issue in Atlassian Confluence Server and Data Center. It is network-reachable, low-complexity, requires low privileges, and needs no user interaction. CVSS 3.1 is 8.8 with high confidentiality, integrity, and availability impact.
Likely exposure
Exposure is limited to affected Confluence Server and Data Center deployments with authenticated user access. The affected ranges are before 6.13.23, 6.14.0 before 7.4.11, 7.5.0 before 7.11.6, and 7.12.0 before 7.12.5.
Exploitation context
The provided sources do not show CISA KEV listing or confirmed active exploitation. The issue is still serious because any valid account may be enough to reach arbitrary code or command execution on vulnerable instances.
Researcher notes
The source bundle identifies CWE-94 and OGNL payload injection leading to arbitrary Java code or system command execution. Evidence is sufficient for version-based exposure assessment, but the bundle does not include exploit telemetry or detailed vendor workaround text.
Mitigation direction
- Upgrade affected Confluence Server and Data Center instances to a fixed version.
- Prioritize versions below 6.13.23, 7.4.11, 7.11.6, or 7.12.5 as applicable.
- Review Atlassian CONFSERVER-68844 for product-specific remediation guidance.
- If immediate upgrade is blocked, consult Atlassian guidance for supported interim controls.
Validation and detection
- Inventory Confluence Server and Data Center deployments and record exact versions.
- Confirm whether each instance falls within the affected version ranges.
- Verify upgraded instances report a fixed version after remediation.
- Review account activity for unusual authenticated access around Confluence.
- Check host and application logs for signs of unexpected code or command execution.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-94: Code execution behavior lookup
Code execution and unsafe deserialization weaknesses often justify reviewing execution behavior and process telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2021-39114 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 8.8 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
8.8HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://jira.atlassian.com/browse/CONFSERVER-68844CVE reference · x_refsource_MISC
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Improper Control of Generation of Code ('Code Injection')
Improper Control of Generation of Code ('Code Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.