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CVE Record

CVE-2026-1401: Tune Library <= 1.6.3 - Missing Authorization to Authenticated (Subscriber+) Stored Cross-Site Scripting via CSV Import

The Tune Library plugin for WordPress is vulnerable to Stored Cross-Site Scripting via CSV import in all versions up to, and including, 1.6.3. This is due to insufficient input sanitization and output escaping on user supplied attributes. This makes it possible for authenticated attackers, with Subscriber-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses the injected page. The vulnerability exists because the CSV import functionality lacks authorization checks and doesn't sanitize imported data, which is later rendered without escaping through the [tune-library] shortcode.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-1401 affects the WordPress Tune Library plugin through version 1.6.3. A logged-in low-privilege user can import CSV data that later runs script in visitors’ browsers when the Tune Library shortcode displays it. This can support account abuse or content tampering, but it requires authenticated site access.

Executive priority

Treat as a timely remediation item for affected WordPress sites, not an emergency unless untrusted users can log in. Prioritize public sites with open registration, many subscribers, or sensitive administrator sessions.

Technical view

The flaw is stored cross-site scripting caused by missing authorization checks in CSV import plus insufficient sanitization and output escaping. User-supplied CSV attributes are rendered through the [tune-library] shortcode. CVSS is 6.4, with network access, low attack complexity, low privileges required, and changed scope.

Likely exposure

Exposure is limited to WordPress sites using Tune Library versions up to and including 1.6.3, especially sites allowing Subscriber-level registration or untrusted authenticated users.

Exploitation context

The source bundle does not indicate active exploitation, and CISA KEV status is false. Abuse requires an authenticated account with Subscriber-level access or higher and a page rendering imported Tune Library content.

Researcher notes

Evidence identifies CWE-79 stored XSS in CSV import and shortcode rendering. The bundle references plugin source lines and a WordPress changeset, but does not clearly state a fixed version. Avoid assuming exploit availability or patch details beyond vendor guidance.

Mitigation direction

  • Inventory WordPress sites for the Tune Library plugin and version.
  • Restrict or disable untrusted user registration where feasible.
  • Limit CSV import access to trusted administrators only.
  • Check WordPress plugin/vendor guidance for an updated fixed release.
  • Update or remove the plugin if no safe version is available.

Validation and detection

  • Confirm whether Tune Library is installed on each WordPress site.
  • Check whether installed versions are 1.6.3 or earlier.
  • Review pages using the [tune-library] shortcode.
  • Audit low-privilege accounts and recent CSV import activity.
  • Monitor for unexpected scripts in Tune Library-rendered content.
Prepared
Confidence
high
Sources
7

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

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.

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cve · low confidence lookup

CVE-2026-1401 mapping review

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Vulnerability profileCVE Program record
Severity
Medium
CVSS
6.4 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
6.4CVSS 3.1MediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:L/A:N3.12.7Primary CVE score

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2026-1401Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/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
jackdeweyTune Library0unaffected
Weakness

CWE details

CWE-79

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

CWE-79 · source CWE mapping

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.

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