Security readout for executives and security teams
Plain-English summary
CVE-2023-42343 is a cross-site scripting issue in Alkacon OpenCms described as affecting versions before 10.5.1. An attacker could trick a user into interacting with crafted content tied to the cmis-online/type path, potentially exposing data or altering page behavior in that user’s session.
Executive priority
Treat as a medium-priority web application risk. Prioritize remediation for internet-facing OpenCms deployments or systems used by privileged staff. No active exploitation evidence was provided, but XSS can support session abuse and targeted phishing.
Technical view
The CVE record describes CWE-79 XSS in OpenCms before 10.5.1 via cmis-online/type. CVSS 3.1 is 6.1: network exploitable, low complexity, no privileges required, user interaction required, scope changed, low confidentiality and integrity impact, no availability impact.
Likely exposure
Organizations running Alkacon OpenCms versions before 10.5.1 may be exposed, especially if OpenCms administrative or user-facing interfaces are reachable by users who can be lured to malicious links or content.
Exploitation context
No CISA KEV listing or source-provided active exploitation evidence was included. Exploitation requires user interaction. The public source bundle does not provide safe validation details beyond the affected component path and XSS classification.
Researcher notes
The CVE metadata is sparse: affected vendor/product fields are listed as n/a, while the description names Alkacon OpenCms before 10.5.1. Avoid assuming broader affected versions or exploit availability beyond the cited CVE and watchTowr reference.
Mitigation direction
- Identify all Alkacon OpenCms deployments and versions.
- Upgrade OpenCms instances before 10.5.1 to 10.5.1 or later where applicable.
- Restrict access to OpenCms administrative interfaces where business allows.
- Review Alkacon guidance and change logs for any related security notes.
- Monitor web logs for suspicious requests involving cmis-online/type.
Validation and detection
- Confirm whether OpenCms is deployed in the environment.
- Record the exact OpenCms version for each instance.
- Check whether any instance is earlier than 10.5.1.
- Review access logs for unusual cmis-online/type requests.
- Verify remediation by confirming upgraded version and normal application behavior.
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-2023-42343 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
- 6.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/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.
SSVC decision data
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:N/UI:R/S:C/C:L/I:L/A:N2.82.7CISA-ADPVulnerability scoring details
Base CVSS 3.1 score
6.1MediumVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N
Vulnerability timeline
Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.
- CVE reservedCVE Program
The CVE ID was reserved by the assigning CNA.
- CVE publishedCVE Program
The CVE record was published.
- CVE updatedCVE Program
The CVE record metadata indicates this as the latest update time.
ADP provider summaries
Source materials
- CVE List V5 sourceCVE List V5
- https://labs.watchtowr.com/xxe-you-can-depend-on-me-opencms/CVE reference, mitre
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.