What is the CVSS score of CVE-2023-3977?

CVE-2023-3977 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.4%.

Is there a public PoC exploit available for CVE-2023-3977?

Yes, a public proof-of-concept exploit is available for CVE-2023-3977. Prioritise patching immediately. EPSS: 0.4%.

Is there a patch available for CVE-2023-3977?

Yes, a patch is available for CVE-2023-3977. Update the affected software to the latest version immediately.

Backup Migration CVE-2023-3977

MEDIUM

Cross-Site Request Forgery (CSRF) (CWE-352)

2023-07-28 security@wordfence.com

WordPress CSRF Backup Migration Clone Duplicate Post Enhanced Text Widget Redirection Rss Redirect Feedburner Alternative Ssl Mixed Content Fix Ultimate Posts Widget Pop Up Social Media Share Buttons Social Sharing Icons

4.3

CVSS 3.1 · NVD

Severity by source

NVD PRIMARY

4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

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

Attack Vector

Network

Attack Complexity

Low

Privileges Required

None

User Interaction

Required

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Apr 08, 2026 - 19:38 nvd

Patch available

PoC Detected

Apr 08, 2026 - 19:18 vuln.today

Public exploit code

CVE Published

Jul 28, 2023 - 05:15 nvd

MEDIUM 4.3

DescriptionCVE.org

Several plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for unauthenticated attackers to install plugins from the limited list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link.

AnalysisAI

Several plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce check on the handle_installation function that is. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, no authentication required, low attack complexity. Public exploit code available.

Technical ContextAI

This vulnerability is classified as Cross-Site Request Forgery (CSRF) (CWE-352), which allows attackers to trick authenticated users into performing unintended actions. Several plugins for WordPress by Inisev are vulnerable to Cross-Site Request Forgery to unauthorized installation of plugins due to a missing nonce check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for unauthenticated attackers to install plugins from the limited list via a forged request granted they can trick a site administrator into performing an action such as clicking on a link. Affected products include: Backupbliss Backup Migration, Backupbliss Clone, Copy-Delete-Posts Duplicate Post, Inisev Enhanced Text Widget, Inisev Redirection.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement anti-CSRF tokens, validate Origin/Referer headers, use SameSite cookie attribute.