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CVE Record

CVE-2026-1941: WP Event Aggregator <= 1.8.7 - Authenticated (Contributor+) Stored Cross-Site Scripting via Shortcode Attributes

The WP Event Aggregator plugin for WordPress is vulnerable to Stored Cross-Site Scripting via the plugin's 'wp_events' shortcode in all versions up to, and including, 1.8.7 due to insufficient input sanitization and output escaping on user supplied attributes. 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-2026-1941 affects the WP Event Aggregator WordPress plugin through version 1.8.7. A logged-in user with Contributor or higher privileges can store malicious script in shortcode attributes. That script may run when someone views the affected page, creating risk to site users and administrators.

Executive priority

Treat as a near-term WordPress hygiene issue, not an emergency unless untrusted users can publish shortcode content. Prioritize sites with external contributors, marketing users, or shared editorial access.

Technical view

The issue is stored cross-site scripting in the plugin’s wp_events shortcode. The CVE states insufficient input sanitization and output escaping allow Contributor+ users to inject scripts through user-supplied shortcode attributes. CVSS 3.1 is 6.4 with low attack complexity, low privileges required, changed scope, and low confidentiality and integrity impact.

Likely exposure

Exposure is mainly WordPress sites using WP Event Aggregator versions up to and including 1.8.7, especially where Contributor-level accounts are available to many users or third parties.

Exploitation context

The source bundle does not report active exploitation, and KEV is false. Exploitation requires an authenticated Contributor-level or higher account. The impact depends on who views the injected content, such as editors, administrators, or public visitors.

Researcher notes

The CVE description and Wordfence reference identify affected versions through 1.8.7. The bundle includes WordPress Trac code references and changeset 3455440, but it does not clearly name a fixed version. Avoid assuming patch availability beyond vendor-published guidance.

Mitigation direction

  • Inventory WordPress sites for WP Event Aggregator installations through version 1.8.7.
  • Check vendor and WordPress plugin guidance for the fixed release or remediation instructions.
  • Restrict Contributor and higher access to trusted users only.
  • Review pages and posts using the wp_events shortcode for suspicious attributes.
  • Remove or disable the plugin if business need is low and no fix is available.

Validation and detection

  • Confirm installed WP Event Aggregator version on each WordPress site.
  • Identify accounts with Contributor, Author, Editor, or Administrator roles.
  • Search content for wp_events shortcodes and unexpected script-like attributes.
  • Review WordPress audit logs for recent shortcode edits by lower-privileged users.
  • Validate remediation in staging before returning normal publishing access.
Prepared
Confidence
medium
Sources
5

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-2026-1941 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-2026-1941Attack 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
xylusWP Event Aggregator: Import Eventbrite events, Meetup events, social events and any iCal Events into Event Calendar0unaffected
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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