Security readout for executives and security teams
Plain-English summary
CVE-2026-23525 is a stored XSS flaw in 1Panel’s App Store application detail view. A malicious app README can run script in an administrator’s browser when viewed, potentially exposing session data or triggering actions in sensitive server-management interfaces.
Executive priority
Treat as a timely patching item for 1Panel-managed servers, especially where administrators browse third-party app listings. It is not currently documented as exploited, but impact could be serious if an admin session is compromised.
Technical view
Affected 1Panel versions render App Store README content through MdEditor with previewOnly enabled without sufficient XSS sanitization. The advisory also notes similar upgrade-related component issues. Affected versions are up to v1.10.33-lts and v2.0.16; patched versions are v1.10.34-lts and v2.0.17.
Likely exposure
Exposure is limited to organizations running affected 1Panel versions and using the App Store or related rendered Markdown views. Exploitation requires a user to view malicious rendered content, and the CVSS vector indicates high privileges and user interaction.
Exploitation context
No active exploitation is stated in the provided sources, and this CVE is not marked KEV. The described attack path is publishing or loading a malicious application whose README executes script when rendered in 1Panel.
Researcher notes
The root issue is insufficient sanitization of Markdown-rendered content in MdEditor previewOnly usage. Public details identify the vulnerable rendering path but do not provide exploit status beyond the advisory. Validate fixes by confirming patched versions and reviewing the vendor advisory.
Mitigation direction
- Upgrade 1Panel to v1.10.34-lts or v2.0.17, as applicable.
- Restrict App Store access to trusted administrators until upgraded.
- Avoid viewing untrusted application details or README content in affected versions.
- Review vendor advisory for any additional 1Panel-specific guidance.
Validation and detection
- Inventory deployed 1Panel versions across managed Linux servers.
- Confirm no instance is v1.10.33-lts or earlier, or v2.0.16 or earlier.
- Verify upgraded instances report v1.10.34-lts, v2.0.17, or later.
- Review App Store usage and administrator activity around untrusted applications.
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-2026-23525 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
- Medium
- CVSS
- 6.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/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:H/PR:H/UI:R/S:U/C:H/I:H/A:H0.55.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
6.4MediumVector: CVSS:3.1/AV:N/AC:H/PR:H/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/1Panel-dev/1Panel/security/advisories/GHSA-mg24-6h5c-9q42CVE 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.