Security readout for executives and security teams
Plain-English summary
This is a limited path traversal issue in Kibana 7.9.0. An authenticated user could cause Kibana to load internal host files, but only files ending in .pbf. The reported impact is low confidentiality exposure, not data modification or service outage.
Executive priority
Treat as a low-priority remediation unless Kibana 7.9.0 is exposed to many low-trust users. Address during normal patch cycles, with faster action for internet-facing or broadly accessible deployments.
Technical view
Kibana 7.9.0 accepted a user-supplied path used to load .pbf files without sufficient validation. The CVE maps to CWE-22. CVSS 3.1 is 3.1 with network access, high attack complexity, low privileges required, no user interaction, and confidentiality-only impact.
Likely exposure
Exposure is most likely where Kibana 7.9.0 is deployed and reachable by authenticated low-privilege users. The CVE record lists other versions as unaffected by default.
Exploitation context
The source bundle does not show KEV listing or active exploitation evidence. Exploitation requires authentication and high complexity, and the file access is limited to internal files ending in .pbf.
Researcher notes
Evidence supports a narrow CWE-22 path traversal in Kibana 7.9.0 affecting .pbf file loading. The bundle does not provide exploit details, active exploitation, or a precise fixed-version statement beyond Elastic security references.
Mitigation direction
- Identify any Kibana 7.9.0 deployments.
- Review Elastic's security update and current Elastic security guidance.
- Upgrade or remediate only according to Elastic's documented guidance.
- Restrict Kibana access to trusted authenticated users.
- Monitor for unusual .pbf file access patterns.
Validation and detection
- Confirm deployed Kibana versions across all environments.
- Verify whether Kibana is reachable by low-privilege users.
- Check whether vendor-recommended remediation is applied.
- Review Kibana and reverse-proxy logs for unusual .pbf requests.
- Document any exposed instances and access controls.
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-22: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2021-22151 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
- Low
- CVSS
- 3.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
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:H/PR:L/UI:N/S:U/C:L/I:N/A:N1.61.4Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
3.1LowVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:U/C:L/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://discuss.elastic.co/t/elastic-stack-7-14-1-security-update/283077CVE reference
- https://www.elastic.co/community/securityCVE reference
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.