Security readout for executives and security teams
Plain-English summary
CVE-2023-31506 is a medium-severity XSS issue in Grav 1.7.44 and earlier. An authenticated attacker could cause malicious script or HTML to run in another user’s browser after user interaction. Business impact is mainly account/session risk and content integrity, not system takeover based on provided evidence.
Executive priority
Treat as a scheduled remediation item unless Grav is internet-facing with many low-trust authenticated users. Prioritize faster if used for public content workflows, partner portals, or shared administrative access.
Technical view
The CVE describes CWE-79 cross-site scripting through an onmouseover attribute on an ISINDEX element. CVSS 3.1 is 5.4: network reachable, low attack complexity, low privileges required, user interaction required, scope changed, low confidentiality and integrity impact, no availability impact.
Likely exposure
Exposure is limited to Grav deployments running version 1.7.44 or earlier where untrusted authenticated users can submit or influence HTML content processed by the application.
Exploitation context
The provided sources do not show active exploitation or CISA KEV listing. Exploitation requires authentication and target user interaction, which lowers urgency but still matters for shared admin or content-management environments.
Researcher notes
The CVE record provides limited product metadata despite the description naming Grav. The available evidence supports authenticated XSS only; it does not establish unauthenticated access, remote code execution, broad exploitation, or a specific patch version.
Mitigation direction
- Inventory Grav instances and identify versions at or below 1.7.44.
- Check official Grav guidance for the fixed version or recommended remediation.
- Restrict content-editing or administrative access to trusted users only.
- Review sanitization settings for untrusted HTML and event attributes.
- Monitor for suspicious HTML containing ISINDEX or event-handler attributes.
Validation and detection
- Confirm whether any production or staging Grav instance runs 1.7.44 or earlier.
- Review user roles that can submit HTML or rich content.
- Check vendor release notes before selecting an upgrade target.
- Use authorized, non-destructive staging tests to verify script sanitization.
- Review recent content changes for unexpected HTML event attributes.
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-2023-31506 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
- 5.4 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/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:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
5.4MediumVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://m3n0sd0n4ld.github.io/patoHackventuras/cve-2023-31506CVE 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.
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.