How severe is CVE-2022-3907?

CVE-2022-3907 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.

Is CVE-2022-3907 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2022-3907?

CVE-2022-3907 affects Clerk.io. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2022-3907?

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

When was CVE-2022-3907 published?

CVE-2022-3907 was published on 2022-12-05 and last updated on 2026-06-17.

CVE-2022-3907

CVE-2022-3907 is a high-severity vulnerability in Clerk.io with a CVSS 3.x base score of 7.5. 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-203.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (55th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-203
Affected product: Clerk.io
Published: 2022-12-05
Last modified: 2026-06-17

Description

The Clerk WordPress plugin before 4.0.0 is affected by time-based attacks in the validation function for all API requests due to the usage of comparison operators to verify API keys against the ones stored in the site options.

Frequently asked questions

What is CVE-2022-3907?: The Clerk WordPress plugin before 4.0.0 is affected by time-based attacks in the validation function for all API requests due to the usage of comparison operators to verify API keys against the ones stored in the site options.
How severe is CVE-2022-3907?: CVE-2022-3907 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
Is CVE-2022-3907 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (55th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2022-3907?: CVE-2022-3907 affects Clerk.io. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2022-3907?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2022-3907 published?: CVE-2022-3907 was published on 2022-12-05 and last updated on 2026-06-17.

References

https://wpscan.com/vulnerability/7920c1c1-709d-4b1f-ac08-f0a02ddb329c

Affected products (1)

cpe:2.3:a:clerk.io:clerk.io:*:*:*:*:*:wordpress:*:*

Other CWE-203 (Observable Discrepancy) vulnerabilities

CVE-2019-25337 — Critical (CVSS 9.8): OwnCloud 8.1.8 contains a username enumeration vulnerability that allows remote attackers to discover user accounts by…
CVE-2026-23519 — Critical (CVSS 9.8): RustCrypto CMOV provides conditional move CPU intrinsics which are guaranteed on major platforms to execute in…
CVE-2025-27667 — Critical (CVSS 9.8): Vasion Print (formerly PrinterLogic) before Virtual Appliance Host 22.0.843 Application 20.0.1923 allows Administrative…
CVE-2024-25714 — Critical (CVSS 9.8): In Rhonabwy through 1.1.13, HMAC signature verification uses a strcmp function that is vulnerable to side-channel…
CVE-2024-25191 — Critical (CVSS 9.8): php-jwt 1.0.0 uses strcmp (which is not constant time) to verify authentication, which makes it easier to bypass…
CVE-2024-25190 — Critical (CVSS 9.8): l8w8jwt 2.2.1 uses memcmp (which is not constant time) to verify authentication, which makes it easier to bypass…

Browse all CWE-203 (Observable Discrepancy) vulnerabilities →