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CVE Record

CVE-2021-47738: CSZ CMS 1.2.7 Persistent Cross-Site Scripting via Private Messaging

CSZ CMS 1.2.7 contains a persistent cross-site scripting vulnerability that allows unauthorized users to embed malicious JavaScript in private messages. Attackers can send messages with script payloads in the user-agent header, which will execute when an admin views the message in the backend dashboard.

MediumCVSS 5.4Not KEV-listedUpdated
Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CSZ CMS 1.2.7 has a stored cross-site scripting issue in private messaging. A low-privileged or unauthorized messaging path can store JavaScript that runs when an administrator opens the message in the backend. Business impact is mainly account/session compromise or unauthorized admin actions within the CMS.

Executive priority

Prioritize if CSZ CMS 1.2.7 supports public-facing business content or privileged admin access. The issue is not rated critical, but admin-triggered stored XSS can undermine CMS trust and content integrity. Address during the next security maintenance window, sooner for internet-facing deployments.

Technical view

The issue is CWE-79 stored XSS in CSZ CMS 1.2.7 private messaging. The provided description says script content can be embedded through the user-agent header and executed when an admin views the message in the dashboard. CVSS 3.1 is 5.4: network exploitable, low complexity, privileges required, user interaction required, scope changed.

Likely exposure

Exposure is limited to organizations running CSZ CMS version 1.2.7 with private messaging and administrator dashboard access. Internet-facing CMS deployments are more exposed. The source bundle does not identify other affected versions or a vendor-fixed release.

Exploitation context

A public Exploit-DB reference exists, but the CVE is not listed as CISA KEV in the provided data. Treat exploitability as demonstrated publicly, not as confirmed active exploitation. Successful abuse requires an administrator to view the malicious private message in the backend.

Researcher notes

Evidence is based on the CVE record, VulnCheck advisory, and Exploit-DB reference. No KEV listing or confirmed in-the-wild exploitation is provided. No official patch version is named in the supplied sources, so remediation should be anchored to current vendor guidance.

Mitigation direction

  • Identify any CSZ CMS 1.2.7 deployments.
  • Check CSZ CMS vendor guidance for a fixed release or official workaround.
  • Restrict admin dashboard access to trusted networks where feasible.
  • Limit or disable private messaging if not business-critical.
  • Review logs and admin sessions for suspicious message activity.

Validation and detection

  • Confirm the deployed CSZ CMS version.
  • Inventory whether private messaging is enabled.
  • Review backend message records for unexpected script-like content.
  • Check web and application logs around admin message views.
  • Verify administrators use hardened accounts and current browsers.
Prepared
Confidence
high
Sources
6

Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.

Potential ATT&CK relevance

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 · medium confidence lookup

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 lookup
cve · low confidence lookup

CVE-2021-47738 mapping review

Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.

Open ATT&CK lookup
Vulnerability profileCVE Program record
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

Official CVE source material

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.

1CVSS vectors
0Timeline events
0ADP providers
5Source links

CVSS vector scores

1 official score

We 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.

ScoreVersionSeverityVectorExploitImpactSource
5.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N2.32.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

5.4Medium
CVSS 3.1 vector shape for CVE-2021-47738Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N

Attack Vector
NetworkAdjacentLocalPhysical
Attack Complexity
LowHigh
Privileges Required
NoneLowHigh
User Interaction
NoneRequired
Scope
ChangedUnchanged
Confidentiality Impact
HighLowNone
Integrity Impact
HighLowNone
Availability Impact
HighLowNone

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
CszcmsCSZ CMS1.2.7Listed
Weakness

CWE details

CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.