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WordPress Vulnerability Listing

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Dataset last synchronized: 2026-08-03 00:31:25 UTC

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6 vulnerability records

HighCVE-2025-14437

Hummingbird <= 3.18.0 - Unauthenticated Sensitive Information Exposure via Log File

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: *-3.18.0

Vulnerability type: CWE-532 Insertion of Sensitive Information into Log File

Affected software, patched versions and attribution

The Hummingbird Performance plugin for WordPress is vulnerable to Sensitive Information Exposure in all versions up to, and including, 3.18.0 via the 'request' function. This makes it possible for unauthenticated attackers to extract sensitive data including Cloudflare API credentials.

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: *-3.18.0

Patched versions: 3.18.1

Researcher credit: ISMAILSHADOW

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
December 17, 2025
CVSS
7.5
MediumCVE-2024-43117

Hummingbird <= 3.9.1 - Cross-Site Request Forgery

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: *-3.9.1

Vulnerability type: CWE-352 Cross-Site Request Forgery (CSRF)

Affected software, patched versions and attribution

The Hummingbird plugin for WordPress is vulnerable to Cross-Site Request Forgery in versions up to, and including, 3.9.1. This is due to missing or incorrect nonce validation on the on_load and maybe_clear_all_cache functions. This makes it possible for unauthenticated attackers to update settings and clear cache via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: *-3.9.1

Patched versions: 3.9.2

Researcher credit: Rafie Muhammad

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
August 7, 2024
CVSS
4.3
MediumCVE-2024-43118

Hummingbird <= 3.9.1 - Missing Authorization

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: *-3.9.1

Vulnerability type: CWE-862 Missing Authorization

Affected software, patched versions and attribution

The Hummingbird plugin for WordPress is vulnerable to unauthorized modification of data due to a missing capability check on the clear_module_cache() function in versions up to, and including, 3.9.1. This makes it possible for authenticated attackers, with contributor-level access and above, to clear module cache.

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: *-3.9.1

Patched versions: 3.9.2

Researcher credit: Rafie Muhammad

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
August 7, 2024
CVSS
4.3
MediumCVE-2024-32792

Hummingbird <= 3.7.3 - Missing Authorization

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: *-3.7.3

Vulnerability type: CWE-862 Missing Authorization

Affected software, patched versions and attribution

The Hummingbird plugin for WordPress is vulnerable to unauthorized access due to a missing capability check on several functions in the /admin/class-ajax.php file in versions up to, and including, 3.7.3. This makes it possible for unauthenticated attackers to perform unauthorized actions like clearing cache.

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: *-3.7.3

Patched versions: 3.7.4

Researcher credit: Peng Zhou

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
April 22, 2024
CVSS
5.3
MediumCVE-2023-1478

Hummingbird <= 3.4.1 - Unauthenticated Path Traversal

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: *-3.4.1

Vulnerability type: CWE-22 Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

Affected software, patched versions and attribution

The Hummingbird plugin for WordPress is vulnerable to Path Traversal in versions up to, and including, 3.4.1 via the page cache module, which doesn't validate file paths prior to saving them. This makes it possible for unauthenticated attackers to enumerate file directories, crash to server by sending cache files to an arbitrary location, and write cache files to arbitrary locations that may deny access to some resources.

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: *-3.4.1

Patched versions: 3.4.2

Researcher credit: Karol Mazurek (AFINE)

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
March 20, 2023
CVSS
5.3
MediumCVE-2022-0994

Hummingbird <= 3.3.1 - Admin+ Stored Cross-Site Scripting

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN: Currently marked unpatched

Affected versions: [*, 3.3.2)

Vulnerability type: CWE-79 Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

Affected software, patched versions and attribution

The Hummingbird WordPress plugin before 3.3.2 does not sanitise and escape the Config Name, which could allow high privilege users, such as admin to perform cross-Site Scripting attacks even when the unfiltered_html capability is disallowed

Hummingbird Performance – Cache & Page Speed Optimization for Core Web Vitals | Critical CSS | Minify CSS | Defer CSS Javascript | CDN

Affected versions: [*, 3.3.2)

Patched versions: 3.3.2

Researcher credit: Taurus Omar

Applicable copyright and licence notices

This record contains material that is subject to copyright

Copyright 2012-2026 Defiant Inc.

Defiant hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute this software vulnerability information. Any copy of the software vulnerability information you make for such purposes is authorized provided that you include a hyperlink to this vulnerability record and reproduce Defiant's copyright designation and this license in any such copy.

Licence reference

This record contains material that is subject to copyright

Copyright 1999-2026 The MITRE Corporation

CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE®). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy.

Licence reference

Original Wordfence record
Published
March 23, 2022
CVSS
5.5

Vulnerability data: Wordfence Intelligence. Analysis and practical guidance: 3Zero Digital.

Data Source, Attribution and Methodology

Production Feed records are aggregated without claiming discovery, exploitation or infection. Applicable source notices remain attached to individual records. Read the methodology.