How severe is CVE-2023-2733?

CVE-2023-2733 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.

Is CVE-2023-2733 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-2733?

CVE-2023-2733 affects Inspireui Mstore Api. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-2733?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2023-2733 published?

CVE-2023-2733 was published on 2023-05-25 and last updated on 2026-06-17.

CVE-2023-2733

CVE-2023-2733 is a critical-severity vulnerability in Inspireui Mstore Api with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-288.

Key facts

Severity: Critical (CVSS 3.x base score 9.8)
EPSS exploit prediction: 1% (66th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-288
Affected product: Inspireui Mstore Api
Published: 2023-05-25
Last modified: 2026-06-17

Description

The MStore API plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.9.0. This is due to insufficient verification on the user being supplied during the coupon redemption REST API request through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.

Frequently asked questions

What is CVE-2023-2733?: The MStore API plugin for WordPress is vulnerable to authentication bypass in versions up to, and including, 3.9.0. This is due to insufficient verification on the user being supplied during the coupon redemption REST API request through the plugin. This makes it possible for unauthenticated attackers to log in as any existing user on the site, such as an administrator, if they have access to the user id.
How severe is CVE-2023-2733?: CVE-2023-2733 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2023-2733 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (66th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-2733?: CVE-2023-2733 affects Inspireui Mstore Api. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-2733?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2023-2733 published?: CVE-2023-2733 was published on 2023-05-25 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:inspireui:mstore_api:*:*:*:*:*:wordpress:*:*

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