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CVE Record

CVE-2026-7465: Spectra Gutenberg Blocks <= 2.19.25 - Authenticated (Contributor+) Remote Code Execution via Arbitrary PHP Function Call via Block Attributes

The Spectra Gutenberg Blocks – Website Builder for the Block Editor plugin for WordPress is vulnerable to Remote Code Execution in all versions up to, and including, 2.19.25. This makes it possible for authenticated attackers, with Contributor-level access and above, to execute code on the server. Exploitation requires a two-block payload embedded in post content: the first block registers a fake uagb/-prefixed block type with an attacker-specified render_callback, and the second block of the same fake type triggers invocation of that callback via call_user_func() during sequential block rendering in the same page request.

HighCVSS 8.8Not KEV-listedUpdated
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Glexia's TakeAutomated analysishigh

Security readout for executives and security teams

Plain-English summary

This is a high-impact WordPress plugin issue. A user with Contributor-level access or higher could make the server run unintended PHP code through Spectra block content. That can threaten site confidentiality, integrity, and availability. No supplied source confirms active exploitation.

Executive priority

Treat this as urgent for WordPress environments with multiple content users. The issue can lead to server-side code execution, but the supplied evidence requires authenticated Contributor-level access and does not confirm active exploitation.

Technical view

Spectra Gutenberg Blocks through 2.19.25 is reported vulnerable to authenticated remote code execution. The issue involves block attributes influencing a render callback that is later invoked through call_user_func during the same page rendering flow. The CVSS 3.1 score is 8.8 with low attack complexity and low privileges required.

Likely exposure

WordPress sites using Spectra Gutenberg Blocks, also listed as ultimate-addons-for-gutenberg, at versions up to and including 2.19.25. Exposure is highest where Contributor, Author, Editor, or Administrator access is broadly assigned or externally federated.

Exploitation context

The provided sources do not show CISA KEV listing or confirmed in-the-wild exploitation. Exploitation requires an authenticated account with Contributor-level privileges or higher and the ability to place malicious block content that is rendered by WordPress.

Researcher notes

The root concern is improper privilege control around block registration and callback invocation. Public details identify the affected version range and call_user_func rendering path, but the provided bundle does not name a specific fixed version or confirmed exploit activity.

Mitigation direction

  • Check vendor and WordPress plugin guidance for the fixed release.
  • Update Spectra immediately when a fixed version is available.
  • Temporarily disable the plugin if untrusted Contributor+ users exist.
  • Restrict Contributor, Author, Editor, and Administrator access.
  • Review recent content edits by privileged non-admin users.
  • Monitor server logs for unexpected PHP execution indicators.

Validation and detection

  • Inventory WordPress sites using ultimate-addons-for-gutenberg or Spectra.
  • Confirm installed versions are not 2.19.25 or earlier.
  • List all accounts with Contributor-level access or higher.
  • Review recent posts and revisions containing unusual Spectra block data.
  • Check whether the plugin remains enabled on public sites.
  • Verify compensating controls after any plugin disablement or upgrade.
Prepared
Confidence
medium
Sources
6

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-269: Authorization and privilege behavior lookup

Authorization weaknesses can support privilege escalation and valid-account review, depending on exploit path. 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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description · low confidence lookup

Execution behavior lookup

The CVE wording references code or command execution, so execution technique review may help defensive triage. 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-2026-7465 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
High
CVSS
8.8 (3.1)
Known Exploited
No
Published

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
5Source links

SSVC decision data

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

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
8.8CVSS 3.1HighCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H2.85.9Wordfence

Vulnerability scoring details

Base CVSS 3.1 score

8.8High
CVSS 3.1 vector shape for CVE-2026-7465Attack VectorAttack ComplexityPrivileges RequiredUser InteractionScopeConfidentiality ImpactIntegrity ImpactAvailability Impact

Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

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
brainstormforceSpectra Gutenberg Blocks – Website Builder for the Block Editor0unaffected
Weakness

CWE details

CWE-269

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

CWE-269 · source CWE mapping

Improper Privilege Management

Improper Privilege Management represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.

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