How severe is CVE-2023-45966?

CVE-2023-45966 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-2023-45966 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-45966?

CVE-2023-45966 affects Remark42. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2023-45966?

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-2023-45966 published?

CVE-2023-45966 was published on 2023-10-23 and last updated on 2026-06-17.

CVE-2023-45966

CVE-2023-45966 is a high-severity vulnerability in Remark42 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-918.

Key facts

Severity: High (CVSS 3.x base score 7.5)
EPSS exploit prediction: 1% (44th percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-918
Affected product: Remark42
Published: 2023-10-23
Last modified: 2026-06-17

Description

umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery (SSRF) vulnerability.

Frequently asked questions

What is CVE-2023-45966?: umputun remark42 version 1.12.1 and before has a Blind Server-Side Request Forgery (SSRF) vulnerability.
How severe is CVE-2023-45966?: CVE-2023-45966 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-2023-45966 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (44th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2023-45966?: CVE-2023-45966 affects Remark42. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2023-45966?: 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-2023-45966 published?: CVE-2023-45966 was published on 2023-10-23 and last updated on 2026-06-17.

References

Affected products (1)

cpe:2.3:a:remark42:remark42:*:*:*:*:*:*:*:*

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