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CVE Record

CVE-2021-33347: An issue was discovered in JPress v3.3.0 and below.

An issue was discovered in JPress v3.3.0 and below. There are XSS vulnerabilities in the template module and tag management module. If you log in to the background by means of weak password, the storage XSS vulnerability can occur.

UnknownCVSS not scoredNot KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

JPress 3.3.0 and earlier is reported to have stored XSS in its template and tag management modules. The report ties exploitation to backend access obtained through weak passwords. Business risk is greatest where JPress administration is exposed or poorly protected. Public sources do not provide a CVSS score or detailed fix information.

Executive priority

Treat this as a targeted hygiene issue rather than a confirmed emergency. Prioritize if JPress is internet-facing, business-critical, or has weak administrative controls. Lack of scoring and patch details means teams should verify exposure quickly and consult vendor guidance before deciding remediation urgency.

Technical view

CVE-2021-33347 describes stored cross-site scripting in JPress v3.3.0 and below, affecting the template module and tag management module. The source bundle does not name CWE data, CPEs, exploit code, or a patched version. The stated prerequisite is successful backend login, specifically through weak password conditions.

Likely exposure

Exposure is likely limited to JPress installations running v3.3.0 or earlier, especially where administrative login is reachable and weak credentials may exist. The provided affected-product metadata is incomplete, so asset confirmation must come from local inventory and vendor records.

Exploitation context

The sources do not report active exploitation, and the CVE is not listed as KEV in the bundle. The described path requires backend access before stored XSS can occur, which makes credential hygiene and administrative access controls central to risk.

Researcher notes

Evidence is sparse: the CVE description names modules and affected versions, but provides no CVSS, CWE, CPE, patch version, or exploit status. Analysis should focus on confirming JPress version, administrative exposure, credential posture, and any vendor/project follow-up in the referenced GitHub issue.

Mitigation direction

  • Identify any JPress deployments and confirm their exact versions.
  • Check vendor guidance or project releases for fixed versions or advisories.
  • Restrict administrative access to trusted networks or VPN where feasible.
  • Enforce strong passwords and multi-factor authentication for backend users.
  • Review template and tag management privileges for least-privilege access.

Validation and detection

  • Search asset inventory for JPress v3.3.0 or earlier installations.
  • Confirm whether JPress admin interfaces are internet-accessible.
  • Review authentication controls for weak or reused backend passwords.
  • Inspect admin audit logs for suspicious template or tag changes.
  • Check whether vendor updates or compensating controls are already applied.
Prepared
Confidence
medium
Sources
4

Public sources used

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

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description · low confidence lookup

Credential and access behavior lookup

The CVE wording references authentication or credential exposure, so valid-account and credential-access review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.

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cve · low confidence lookup

CVE-2021-33347 mapping review

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Vulnerability profileCVE Program record
Severity
Unknown
CVSS
Not scored
Known Exploited
No
Published
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.

0CVSS vectors
0Timeline events
0ADP providers
2Source links

CVSS and timeline data

No CVSS vectors or timeline events were available in the normalized CVE source material.

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
n/an/an/aListed
Weakness

CWE details

No CWE listed

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