Security readout for executives and security teams
Plain-English summary
CVE-2020-26113 is a self-XSS issue in cPanel/WHM before version 90.0.10, affecting the WHM Manage API Tokens interfaces. The likely business impact is limited unless an administrator can be induced to trigger malicious content in their own session.
Executive priority
Handle during normal patch governance unless the organization exposes WHM broadly or has many administrator users. Prioritize upgrade confirmation because the affected version boundary is clear.
Technical view
The public record describes self cross-site scripting in WHM Manage API Tokens interfaces, tracked as SEC-569, fixed by cPanel version 90.0.10. No CVSS score, CWE, detailed affected CPEs, or exploit details are provided in the supplied bundle.
Likely exposure
Exposure is most likely limited to cPanel/WHM installations running versions earlier than 90.0.10 where administrators use the WHM Manage API Tokens interface.
Exploitation context
The bundle does not show CISA KEV listing or active exploitation evidence. Because the issue is described as self-XSS, exploitation likely requires user interaction by someone already using WHM.
Researcher notes
Evidence is sparse: the source bundle names self-XSS, the WHM Manage API Tokens interface, SEC-569, and the fixed-before boundary. It does not provide root cause, payload conditions, CVSS, or proof of exploitation.
Mitigation direction
- Upgrade cPanel/WHM to version 90.0.10 or later.
- Review cPanel's 90 change log for SEC-569 guidance.
- Restrict WHM access to trusted administrators only.
- Use MFA and least privilege for WHM administrator accounts.
Validation and detection
- Inventory cPanel/WHM versions across hosting systems.
- Confirm each exposed system is at least version 90.0.10.
- Check whether WHM Manage API Tokens is accessible to administrators.
- Review vendor documentation for any later SEC-569 notes.
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
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CVE-2020-26113 mapping review
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Open ATT&CK lookup- Severity
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://docs.cpanel.net/changelogs/90-change-log/CVE 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.