How severe is CVE-2023-3277?

CVE-2023-3277 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-2023-3277 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-3277?

CVE-2023-3277 affects Inspireui Mstore Api. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-3277?

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-2023-3277 published?

CVE-2023-3277 was published on 2023-11-03 and last updated on 2026-06-17.

CVE-2023-3277

CVE-2023-3277 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: 3% (85th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-288
Affected product: Inspireui Mstore Api
Published: 2023-11-03
Last modified: 2026-06-17

Description

The MStore API plugin for WordPress is vulnerable to Unauthorized Account Access and Privilege Escalation in versions up to, and including, 4.10.7 due to improper implementation of the Apple login feature. This allows unauthenticated attackers to log in as any user as long as they know the user's email address.

Frequently asked questions

What is CVE-2023-3277?: The MStore API plugin for WordPress is vulnerable to Unauthorized Account Access and Privilege Escalation in versions up to, and including, 4.10.7 due to improper implementation of the Apple login feature. This allows unauthenticated attackers to log in as any user as long as they know the user's email address.
How severe is CVE-2023-3277?: CVE-2023-3277 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-2023-3277 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 3% (85th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-3277?: CVE-2023-3277 affects Inspireui Mstore Api. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-3277?: 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-2023-3277 published?: CVE-2023-3277 was published on 2023-11-03 and last updated on 2026-06-17.

References

Affected products (1)

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

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