CVE-2026-3173Network attack vector

Contributor-level metadata disclosure via unchecked block attributes

Published May 28, 2026 · Updated May 28, 2026

Insecure direct object reference in BoldBlocks Meta Field Block 1.5.1 and earlier allows remote authenticated users to read object metadata. The block-rendering callback accepts objectId and objectType attributes and passes them to post, term, or user metadata lookups without checking access to the selected object. Contributor-level access to the block editor is sufficient to disclose private metadata, including personal data stored by other plugins.

CVSS severity6.5
Medium
EPSS probability0.24%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Insecure direct object reference in BoldBlocks Meta Field Block 1.5.1 and earlier allows remote authenticated users to read object metadata. The block-rendering callback accepts objectId and objectType attributes and passes them to post, term, or user metadata lookups without checking access to the selected object. Contributor-level access to the block editor is sufficient to disclose private metadata, including personal data stored by other plugins.

The record

CVE
CVE-2026-3173
Published
May 28, 2026
Updated
May 28, 2026
Vendor
BoldBlocks
Product
Meta Field Block
Classifications
CWE-639, T1213
Attack vector
network
Privileges
authenticated

Timeline

How it unfolded

  1. May 28, 2026CVE publishedPublication date reported by the CVE source.
  2. May 28, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.5.1

What conditions does exploitation require?

Attack vectornetwork
Required privilegesauthenticated

What is affected?

BoldBlocks · Meta Field Blockversion=0 <=1.5.1

Published CVSS scores

6.5WordfenceCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-639Authorization Bypass Through User-Controlled Key
T1213Data from Information Repositories

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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