Is CVE-2023-0958 in the CISA KEV catalog?

No. CVE-2023-0958 is not currently on the CISA Known Exploited Vulnerabilities list.

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

CVE-2023-0958 has a CVSS v3 base score of 4.3 (MEDIUM).

What is the EPSS score for CVE-2023-0958?

CVE-2023-0958 has an EPSS score of 0.56% (42th percentile), estimating the probability of exploitation in the next 30 days.

How do I fix CVE-2023-0958?

Upgrade backup migration to 1.2.8 or later. Fixes are available for 11 affected products.

CVE & CISA-KEV Catalog

CVE-2023-0958

MEDIUM

4.3

CVSS v3

NVD

Description

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.

CWE-862Missing Authorization

How to fix

Remediation Available

backup migrationNVD

Affected:< 1.2.8Fixed in:1.2.8CVE-2023-0958derived from NVD

cloneNVD

Affected:< 2.3.8Fixed in:2.3.8CVE-2023-0958derived from NVD

duplicate postNVD

Affected:< 1.4.0Fixed in:1.4.0CVE-2023-0958derived from NVD

enhanced text widgetNVD

Affected:< 1.5.8Fixed in:1.5.8CVE-2023-0958derived from NVD

pop-upNVD

Affected:< 1.2.0Fixed in:1.2.0CVE-2023-0958derived from NVD

redirectionNVD

Affected:< 1.1.4Fixed in:1.1.4CVE-2023-0958derived from NVD

rss redirect \& feedburner alternativeNVD

Affected:< 3.8Fixed in:3.8CVE-2023-0958derived from NVD

social media share buttons \& social sharing iconsNVD

Affected:< 2.8.2Fixed in:2.8.2CVE-2023-0958derived from NVD

social share icons \& social share buttonsNVD

Affected:< 3.5.8Fixed in:3.5.8CVE-2023-0958derived from NVD

ssl mixed content fixNVD

Affected:< 3.2.4Fixed in:3.2.4CVE-2023-0958derived from NVD

ultimate posts widgetNVD

Affected:< 2.2.5Fixed in:2.2.5CVE-2023-0958derived from NVD

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityLow

AvailabilityNone

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

Exploit Intelligence

0.56%probability of exploitation in 30 days

42ndpercentile

Moderate risk: more likely to be exploited than 42% of all known CVEs.

References

Related Vulnerabilities

Other CWE-862 (Missing Authorization) vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2021-39226	Critical	9.8	100%	KEV	Fix
CVE-2022-0543	Critical	10.0	100%	KEV	Fix
CVE-2021-21978	Critical	9.8	99%	-	Fix
CVE-2023-52163	High	8.8	96%	KEV	-
CVE-2022-1329	High	8.8	93%	-	-
CVE-2023-6875	Critical	9.8	90%	-	-

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-04-08.