Vulnerability-Lookup

CVE-2026-5347 (GCVE-0-2026-5347)

Vulnerability from cvelistv5 – Published: 2026-04-24 05:29 – Updated: 2026-04-24 12:03

Title

WP Books Gallery <= 4.8.0 - Missing Authorization to Unauthenticated Settings Update via 'permalink_structure' Parameter

Summary

The HM Books Gallery plugin for WordPress is vulnerable to Missing Authorization in versions up to and including 4.8.0. This is due to the absence of capability checks and nonce verification in the admin_init hook that handles the permalink settings update at line 205-209 of wp-books-gallery.php. The vulnerable code checks only for the presence of the 'permalink_structure' POST parameter before updating the 'wbg_cpt_slug' option, without verifying that the request comes from an authenticated administrator. This makes it possible for unauthenticated attackers to modify the custom post type slug for the books gallery, which changes the URL structure for all book entries and can break existing links and SEO rankings.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-24 12:03 UTC

CWE

CWE-862 - Missing Authorization

Assigner

Wordfence CNA under the mitre root

CNA scorecard C 65/100 over 2253 records in the last 180 days details

References

6 references

URL	Tags
https://www.wordfence.com/threat-intel/vulnerabil…
https://plugins.trac.wordpress.org/browser/wp-boo…
https://plugins.trac.wordpress.org/browser/wp-boo…
https://plugins.trac.wordpress.org/browser/wp-boo…
https://plugins.trac.wordpress.org/browser/wp-boo…
https://plugins.trac.wordpress.org/browser/wp-boo…

Impacted products

1 product

Vendor	Product	Version	CPE status
mhmrajib	WP Books Gallery – Build Stunning Book Showcases & Libraries in Minutes	Affected: 0 , ≤ 4.8.0 (semver)	guessed

Credits

Abhirup Konwar

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-5347

Vulnerability from fkie_nvd - Published: 2026-04-24 06:16 - Updated: 2026-06-17 10:58

Severity

5.3 (Medium) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Summary

References

	URL	Tags
	security@wordfence.com	https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.7.8/wp-books-gallery.php#L206
	security@wordfence.com	https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.7.8/wp-books-gallery.php#L207
	security@wordfence.com	https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.8.1/wp-books-gallery.php#L207
	security@wordfence.com	https://plugins.trac.wordpress.org/browser/wp-books-gallery/trunk/wp-books-gallery.php#L206
	security@wordfence.com	https://plugins.trac.wordpress.org/browser/wp-books-gallery/trunk/wp-books-gallery.php#L207
	security@wordfence.com	https://www.wordfence.com/threat-intel/vulnerabilities/id/12bf1cd8-cd55-4771-b2bb-597797b1b949?source=cve

Impacted products

	Vendor	Product	Version

JSON

To clipboard

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          "defaultStatus": "unaffected",
          "product": "WP Books Gallery \u2013 Build Stunning Book Showcases \u0026 Libraries in Minutes",
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      ],
      "source": "security@wordfence.com",
      "type": "Secondary"
    }
  ]
}

GHSA-7CW2-VVG5-H9PJ

Vulnerability from github – Published: 2026-04-24 06:31 – Updated: 2026-04-24 06:31

Details

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-5347"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-862"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-24T06:16:04Z",
    "severity": "MODERATE"
  },
  "details": "The HM Books Gallery plugin for WordPress is vulnerable to Missing Authorization in versions up to and including 4.8.0. This is due to the absence of capability checks and nonce verification in the admin_init hook that handles the permalink settings update at line 205-209 of wp-books-gallery.php. The vulnerable code checks only for the presence of the \u0027permalink_structure\u0027 POST parameter before updating the \u0027wbg_cpt_slug\u0027 option, without verifying that the request comes from an authenticated administrator. This makes it possible for unauthenticated attackers to modify the custom post type slug for the books gallery, which changes the URL structure for all book entries and can break existing links and SEO rankings.",
  "id": "GHSA-7cw2-vvg5-h9pj",
  "modified": "2026-04-24T06:31:17Z",
  "published": "2026-04-24T06:31:17Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-5347"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.7.8/wp-books-gallery.php#L206"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.7.8/wp-books-gallery.php#L207"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-books-gallery/tags/4.8.1/wp-books-gallery.php#L207"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-books-gallery/trunk/wp-books-gallery.php#L206"
    },
    {
      "type": "WEB",
      "url": "https://plugins.trac.wordpress.org/browser/wp-books-gallery/trunk/wp-books-gallery.php#L207"
    },
    {
      "type": "WEB",
      "url": "https://www.wordfence.com/threat-intel/vulnerabilities/id/12bf1cd8-cd55-4771-b2bb-597797b1b949?source=cve"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Vulnerability timeline

Sightings and recorded dates, grouped by day · UTC

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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.

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CVE-2026-5347 (GCVE-0-2026-5347)

FKIE_CVE-2026-5347

GHSA-7CW2-VVG5-H9PJ

Tags

Sightings

Nomenclature

Vulnerability timeline

Related by attack behaviour