Security readout for executives and security teams
Plain-English summary
DNN Platform has a stored cross-site scripting flaw in scheduler log notes. A privileged extension can save rich text containing script, which may run when viewed in the PersonaBar. For organizations using affected DNN versions, this can expose administrative sessions and content management workflows.
Executive priority
Prioritize patching affected DNN administrative portals, especially internet-facing or business-critical CMS instances. The issue needs privileged positioning, but impact is high if abused in an admin context.
Technical view
CVE-2026-24836 affects Dnn.Platform versions 9.0.0 to before 9.13.10 and 10.0.0 to before 10.2.0. Extensions could write rich text into Scheduler LogNotes without sufficient script handling, causing script execution when displayed in PersonaBar. It is classified as CWE-79 with CVSS 3.1 score 7.7.
Likely exposure
Exposure is limited to DNN installations in the affected version ranges, especially environments using extensions that write scheduler log notes. The attack path requires high privileges and user interaction, but successful exploitation could affect confidentiality, integrity, and availability in the administrative interface.
Exploitation context
The provided sources do not report active exploitation, and this CVE is not marked as CISA KEV. The CVSS vector indicates network reachability, high attack complexity, high privileges required, and required user interaction.
Researcher notes
The public record attributes the issue to rich text written by extensions into Scheduler LogNotes and rendered in PersonaBar. Available sources name fixed versions but provide limited operational detail. Avoid assuming exploit availability beyond the vendor advisory and CVE metadata.
Mitigation direction
- Upgrade Dnn.Platform to version 9.13.10, 10.2.0, or later.
- Review the GitHub security advisory for any additional vendor guidance.
- Inventory extensions that write scheduler log notes and prioritize testing after upgrade.
Validation and detection
- Identify all DNN instances and record their platform versions.
- Confirm no instance runs 9.0.0 through 9.13.9 or 10.0.0 through 10.1.x.
- Review scheduler-related extensions for log note functionality.
- Verify upgraded systems load PersonaBar without rendering unsafe log note content.
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-79: User-session and phishing behavior lookup
Client-side and session-facing weaknesses should be reviewed alongside initial-access and user-execution behaviors. 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-2026-24836 mapping review
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Open ATT&CK lookup- Severity
- High
- CVSS
- 7.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/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:H/PR:H/UI:R/S:C/C:H/I:H/A:H16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.7HighVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/dnnsoftware/Dnn.Platform/security/advisories/GHSA-2g5g-hcgh-q3rpCVE reference · x_refsource_CONFIRM
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 Neutralization of Input During Web Page Generation ('Cross-site Scripting')
Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.