What is the CVSS score of CVE-2023-0958?

CVE-2023-0958 has a CVSS 3.1 base score of 4.3 (Medium). CVSS vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N. EPSS exploitation probability: 0.2%.

Is there a patch available for CVE-2023-0958?

Yes, a patch is available for CVE-2023-0958. Update the affected software to the latest version immediately.

Social Media Share Buttons Social Sharing Icons CVE-2023-0958

MEDIUM

Missing Authorization (CWE-862)

2023-07-28 security@wordfence.com

WordPress Authentication Bypass Social Media Share Buttons Social Sharing Icons Backup Migration Clone Duplicate Post Enhanced Text Widget Redirection Rss Redirect Feedburner Alternative Ssl Mixed Content Fix Ultimate Posts Widget Pop Up Social Share Icons Social Share Buttons Wordpress Plugin Copy Delete Posts Inisev Backupbliss Mypopups Ultimatelysocial

4.3

CVSS 3.1 · NVD

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Vulnerability Assessment

Weakness	CWE CWE-862 OWASP Top 10:2025 A01:2025 - Broken Access Control ASVS 5.0 V8 - Authorization Authorization checks on every request MITRE ATT&CK 1 technique across 1 tactic: Privilege Escalation The technique list with ATT&CK links and the kill-chain view is part of the Basic plan and up. Sign in to read
Impact	CVSS score of 4.3 (MEDIUM). Attack characteristics: network attack vector, low complexity, low privileges required, no user interaction not required. EPSS exploitation probability: 0.22%.
Exploit ScenarioDerived	A remote attacker could access resources or perform actions without proper authorization checks by sending crafted requests to the affected application.

This Month Plan within 30 days. Why: MEDIUM severity (CVSS 4.0-6.9).

Patch available 0.2% exploitation probability (EPSS)

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AnalysisAI

Several plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_installation function that is called via the. Rated medium severity (CVSS 4.3), this vulnerability is remotely exploitable, low attack complexity. This Missing Authorization vulnerability could allow attackers to access resources or perform actions without proper authorization checks.

RemediationAI

A vendor patch is available. Apply the latest security update as soon as possible. Implement role-based access control, validate authorization on every request server-side, apply principle of least privilege.

Affects your stack

Find out whether the stacks and servers you run are on an affected version.

Checking this CVE against your own stacks and servers is part of the Basic plan and up.

Technical ContextAI · show details

This vulnerability is classified as Missing Authorization (CWE-862), which allows attackers to access resources or perform actions without proper authorization checks. Several plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for authenticated attackers with minimal permissions, such as subscribers, to install select plugins from Inisev on vulnerable sites. CVE-2023-38514 appears to be a duplicate of this vulnerability. Affected products include: Backupbliss Backup Migration, Backupbliss Clone, Copy-Delete-Posts Duplicate Post, Inisev Enhanced Text Widget, Inisev Redirection.

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Exploit and PoC references, threat intelligence from 22 sources

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Severity by source

NVD PRIMARY 4.3 MEDIUM

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

Primary rating from NVD · only source for this CVE.

CVSS VectorNVD

Attack Vector

Network

Attack Complexity

Low

Privileges Required

Low

User Interaction

None

Scope

Unchanged

Confidentiality

None

Integrity

Low

Availability

None

Lifecycle Timeline

Patch released

Apr 08, 2026 - 19:38 nvd

Patch available

CVE Published

Jul 28, 2023 - 05:15 nvd

MEDIUM 4.3

DescriptionCVE.org

Several plugins for WordPress by Inisev are vulnerable to unauthorized installation of plugins due to a missing capability check on the handle_installation function that is called via the inisev_installation AJAX aciton in various versions. This makes it possible for authenticated attackers with minimal permissions, such as subscribers, to install select plugins from Inisev on vulnerable sites. CVE-2023-38514 appears to be a duplicate of this vulnerability.

Threat Intelligence Overview

EPSS Score

0.2%

Top 55% exploitable

Data Quality

3 sources

Confidence: Low

NVD

CVE.org

EPSS

How this decision was reached

The engine reads each signal below and applies a fixed list of rules from top to bottom. The first rule that matches sets the recommended action – like a statement, every line is shown.

SignalValue

Severity MEDIUM

CISA KEV No

Public POC No

EPSS 0.2%

Patch available Yes

Active threat No

Deciding rule

MEDIUM severity (CVSS 4.0-6.9)

What every action level means

Emergency Immediate action required. Criteria: CRITICAL + in CISA KEV (actively exploited) without patch, OR CRITICAL + EPSS > 30% without patch, OR CRITICAL + active threat signals without patch.

Act Now Prioritize within 24-48h. Criteria: in KEV with patch available, OR CRITICAL + public POC, OR HIGH + EPSS > 10%, OR CRITICAL + active threat, OR any CRITICAL severity.

This Week Schedule remediation this week. Criteria: HIGH severity (CVSS 7.0-8.9). Patch within normal change window.

This Month Plan within 30 days. Criteria: MEDIUM severity (CVSS 4.0-6.9), lower exploitation probability. Include in regular patch cycle.

Monitor Track and reassess. Criteria: LOW severity (CVSS 0.1-3.9), minimal exploitation risk. No immediate action needed.

SSVC AssessmentENISA

SSVC Decision· derived

Scheduled

Exploitation· derived

None

System Exposure· derived

Open

Automatable· derived

Human Impact· derived

Medium

Priority Score

Low Medium High Critical

KEV: 0

EPSS: 0

CVSS: +22

PoC: 0

Weaponized: 0

Threat intel: 0

Gov advisory: 0

Attack Technique

Authentication Bypass CRITICAL

Authentication bypass attacks exploit flaws in the verification mechanisms that control access to systems and applications.

Affected Products (CPE)CVE.org

cpe:2.3:a:backupbliss:backup_migration:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:backupbliss:clone:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:copy-delete-posts:duplicate_post:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:inisev:enhanced_text_widget:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:inisev:redirection:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:inisev:rss_redirect_\&_feedburner_alternative:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:inisev:ssl_mixed_content_fix:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:inisev:ultimate_posts_widget:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:mypopups:pop-up:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:socialshare:social_share_icons_\&_social_share_buttons:*:*:*:*:*:wordpress:*:*

cpe:2.3:a:ultimatelysocial:social_media_share_buttons_\&_social_sharing_icons:*:*:*:*:*:wordpress:*:*

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References

Advisories & patches

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