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CVE Record

CVE-2026-3619: Sheets2Table <= 0.4.1 - Authenticated (Contributor+) Stored Cross-Site Scripting via 'titles' Shortcode Attribute

The Sheets2Table plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the 'titles' shortcode attribute in the [sheets2table-render-table] shortcode in all versions up to and including 0.4.1. This is due to insufficient input sanitization and output escaping. Specifically, the 'titles' attribute value from the shortcode is passed through S2T_Functions::trim_array_values() (which only trims whitespace) and then echoed directly into HTML via `echo $header` inside a <th> tag in the display_table_header() function without any escaping such as esc_html(). This makes it possible for authenticated attackers, with Contributor-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses an injected page.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

CVE-2026-3619 affects the Sheets2Table WordPress plugin through version 0.4.1. A logged-in user with Contributor-level access or higher can store malicious script in a table shortcode attribute. That script can run when visitors view the affected page. This is not reported as actively exploited in the provided sources.

Executive priority

Treat as a medium-priority web content integrity risk. Prioritize sites with many content contributors, public traffic, or sensitive administrator sessions. The business urgency is lower than unauthenticated remote code execution, but stored XSS can still support account abuse and visitor trust damage.

Technical view

The issue is stored cross-site scripting in the [sheets2table-render-table] shortcode’s 'titles' attribute. The value is only trimmed by S2T_Functions::trim_array_values() and later echoed into a table header without HTML escaping. The CVSS 3.1 score is 6.4, requiring low-privileged authenticated access and affecting confidentiality and integrity.

Likely exposure

Exposure is limited to WordPress sites using Sheets2Table versions up to and including 0.4.1, especially where Contributor-level users can create or edit content containing the vulnerable shortcode.

Exploitation context

The provided sources do not show CISA KEV listing or active exploitation. Abuse requires an authenticated account with Contributor privileges or higher and a page or post where the vulnerable shortcode attribute is stored and later viewed.

Researcher notes

Evidence points to missing sanitization and output escaping around table header rendering. The source bundle names affected versions through 0.4.1 but does not provide a confirmed patched version. Avoid assuming remediation beyond vendor guidance or compensating access controls.

Mitigation direction

  • Check official Sheets2Table and WordPress plugin guidance for a fixed version or vendor workaround.
  • Restrict Contributor and higher content-editing access to trusted users only.
  • Review and remove untrusted Sheets2Table shortcodes using the 'titles' attribute.
  • Consider disabling the plugin if no safe update or mitigation is available.

Validation and detection

  • Inventory WordPress sites for the Sheets2Table plugin.
  • Identify installations running version 0.4.1 or earlier.
  • Review posts and pages using [sheets2table-render-table] with the 'titles' attribute.
  • Confirm whether vendor guidance names a patched release before marking remediation complete.
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-2026-3619 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
6Source 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-2026-3619Attack 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
tonyh-1Sheets2Table0unaffected
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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