Security readout for executives and security teams
Plain-English summary
A flaw in XWiki skin handling can let a low-privileged user turn page-view access into full script execution. Successful abuse can lead to remote code execution and unrestricted read/write access to wiki content. XWiki has released patched versions and a manual fix path.
Executive priority
Treat this as urgent for any affected XWiki deployment. The impact includes complete wiki content compromise and potential server-side code execution. Patch or apply the vendor fix before routine maintenance windows for exposed systems.
Technical view
CVE-2023-37462 is an eval-injection issue in SkinsCode.XWikiSkinsSheet caused by improper escaping. A crafted non-existing page name can trigger arbitrary script macros, including Groovy and Python macros, escalating from view rights to programming rights. CVSS is 10.0 with network access, low complexity, low privileges, and no user interaction.
Likely exposure
Exposure is limited to XWiki Platform versions >= 7.0-rc-1 and < 14.4.8, and >= 14.5 and < 14.10.4. Systems where users can view SkinsCode.XWikiSkinsSheet are particularly relevant. The source bundle does not identify other affected products.
Exploitation context
The advisory describes a practical attack path and a way to test installations, but the bundle does not cite public exploitation in the wild. CISA KEV status is false in the provided data, so active exploitation should not be claimed from these sources alone.
Researcher notes
The core security boundary failure is escalation from view rights to programming rights through dynamically evaluated script content. Keep validation source-grounded: confirm version, document state, permissions, and vendor test result. Do not infer exploitation status beyond the advisory and KEV signal.
Mitigation direction
- Upgrade XWiki to 14.4.8, 14.10.4, 15.0-rc-1, or a supported later release.
- If upgrade is delayed, manually apply commit d9c88ddc to SkinsCode.XWikiSkinsSheet per XWiki guidance.
- Prioritize internet-facing or broadly accessible XWiki instances first.
- After remediation, confirm no affected XWiki branch remains deployed.
Validation and detection
- Inventory XWiki Platform versions and compare them with the affected version ranges.
- Verify whether SkinsCode.XWikiSkinsSheet exists and who can view it.
- Use the GHSA’s published installation check without adding offensive payload detail.
- Retest after upgrade or manual patch to confirm the issue is closed.
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-74: Exact CWE lookup
Use the exact CWE identifier as the starting point before reviewing related ATT&CK behavior. 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 lookupCWE-95: 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 lookupExecution behavior lookup
The CVE wording references code or command execution, so execution technique review may help defensive triage. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-37462 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
- Critical
- CVSS
- 10 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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:L/PR:L/UI:N/S:C/C:H/I:H/A:H3.16Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
10CriticalVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/xwiki/xwiki-platform/security/advisories/GHSA-h4vp-69r8-gvjgCVE reference · x_refsource_CONFIRM
- https://github.com/xwiki/xwiki-platform/commit/d9c88ddc4c0c78fa534bd33237e95dea66003d29CVE reference · x_refsource_MISC
- https://jira.xwiki.org/browse/XWIKI-20457CVE 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 Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection')
Improper Neutralization of Directives in Dynamically Evaluated Code ('Eval Injection') represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.