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CVE Record

CVE-2026-5428: Royal Addons for Elementor <= 1.7.1056 - Authenticated (Author+) Stored Cross-Site Scripting via Image Caption Field

The Royal Elementor Addons plugin for WordPress is vulnerable to Stored Cross-Site Scripting via image captions in the Image Grid/Slider/Carousel widget in versions up to and including 1.7.1056. This is due to insufficient output escaping in the render_post_thumbnail() function, where wp_kses_post() is used instead of esc_attr() for the alt attribute context. This makes it possible for authenticated attackers, with Author-level access and above, to inject arbitrary web scripts in pages that will execute whenever a user accesses a page with the malicious image displayed in the media grid widget.

MediumCVSS 6.4Not KEV-listedUpdated
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Glexia's TakeAutomated analysismoderate

Security readout for executives and security teams

Plain-English summary

A logged-in WordPress user with Author privileges or higher can place malicious script content in an image caption. When the affected image appears in a Royal Addons media-grid widget, the script can run in visitors’ browsers, potentially exposing data or enabling unauthorized actions in their sessions.

Executive priority

Prioritize remediation on public sites with multiple or less-trusted authors. The vulnerability is not unauthenticated or documented as actively exploited, but persistent browser execution can affect every visitor to a compromised page. Address it promptly through normal vulnerability-management timelines, escalating if suspicious author activity or captions are found.

Technical view

Royal Addons for Elementor through version 1.7.1056 inadequately escapes image captions in Image Grid, Slider, and Carousel rendering. render_post_thumbnail() applies wp_kses_post() where attribute-context escaping with esc_attr() is required, enabling stored cross-site scripting through the rendered image alt attribute. The issue is classified as CWE-79 with CVSS 3.1 score 6.4.

Likely exposure

Exposure requires Royal Addons for Elementor version 1.7.1056 or earlier, use of the affected media-grid widgets, and an attacker-controlled account with Author-level access or higher. Sites allowing many contributors, weak account controls, or untrusted content authors face greater practical risk.

Exploitation context

The attack is network-accessible, low-complexity, and requires low privileges but no victim interaction beyond viewing an affected page. The supplied sources do not establish active exploitation, and the CVE is not identified as being in CISA KEV.

Researcher notes

The supplied structured affected entry lists version "0" and defaults to unaffected, conflicting with the narrative boundary of 1.7.1056 and earlier. The references include a WordPress changeset, but the bundle does not explicitly identify a fixed release. Confirm the remediation version through current vendor guidance.

Mitigation direction

  • Update to a vendor-confirmed fixed release after checking current WordPress or vendor guidance.
  • Until updated, disable the affected widgets or plugin where operationally acceptable.
  • Restrict Author-level and higher access to trusted users and review unnecessary accounts.
  • Remove suspicious image captions and affected content after preserving appropriate investigation evidence.

Validation and detection

  • Inventory Royal Addons installations and confirm whether versions are 1.7.1056 or earlier.
  • Identify pages using Image Grid, Slider, or Carousel widgets with image captions.
  • Review Author-level accounts and recent media-caption or page-content changes.
  • After remediation, verify in staging that caption content is safely escaped within rendered attributes.
  • Monitor affected sites for unexplained administrative actions or suspicious content modifications.
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-2026-5428 mapping review

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

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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
5Timeline events
1ADP providers
6Source links

SSVC decision data

CISA-ADPCISA Coordinator
Timestamp
Version
2.0.3
Exploitation: noneAutomatable: noTechnical Impact: partial

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:N3.12.7Wordfence

Vulnerability scoring details

Base CVSS 3.1 score

6.4Medium
CVSS 3.1 vector shape for CVE-2026-5428Attack 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

Vulnerability timeline

Timeline events are normalized from CVE metadata, CNA source timelines, ADP timelines, and KEV metadata when present.

  1. CVE reservedCVE Program

    The CVE ID was reserved by the assigning CNA.

  2. Source timelineWordfence

    Vendor Notified

  3. Source timelineWordfence

    Disclosed

  4. CVE publishedCVE Program

    The CVE record was published.

  5. CVE updatedCVE Program

    The CVE record metadata indicates this as the latest update time.

ADP provider summaries

CISA-ADPCISA ADP Vulnrichment
other:ssvc

Source materials

Affected products

Products and packages named in the record

VendorProductVersion / packageStatus
wproyalRoyal Addons for Elementor – Addons and Templates Kit for Elementor0unaffected
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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