CVE-2023-6251

CVE-2023-6251 is a low-severity vulnerability in Checkmk with a CVSS 3.x base score of 3.5. 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-352.

Key facts

• Severity: Low (CVSS 3.x base score 3.5)
• EPSS exploit prediction: 0% (14th percentile)
• Actively exploited: Not listed in CISA KEV
• Weakness: CWE-352
• Affected product: Checkmk
• Published: 2023-11-24
• Last modified: 2026-06-17

Description

Cross-site Request Forgery (CSRF) in Checkmk < 2.2.0p15, < 2.1.0p37, <= 2.0.0p39 allow an authenticated attacker to delete user-messages for individual users.

Frequently asked questions

What is CVE-2023-6251?

Cross-site Request Forgery (CSRF) in Checkmk < 2.2.0p15, < 2.1.0p37, <= 2.0.0p39 allow an authenticated attacker to delete user-messages for individual users.

How severe is CVE-2023-6251?

CVE-2023-6251 has a CVSS 3.x base score of 3.5, rated low severity. It is exploitable over network with low attack complexity, requires low privileges and user interaction. Impact on confidentiality is none, integrity low, and availability none.

Is CVE-2023-6251 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (14th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2023-6251?

CVE-2023-6251 primarily affects Checkmk. In total, 119 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2023-6251?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2023-6251 published?

CVE-2023-6251 was published on 2023-11-24 and last updated on 2026-06-17.

References

• https://checkmk.com/werk/16224

Affected products (119)

• cpe:2.3:a:checkmk:checkmk:2.0.0:-:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b4:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b5:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b6:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b7:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:b8:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:i1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p1:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p10:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p11:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p12:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p13:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p14:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p15:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p16:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p17:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p18:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p19:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p2:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p20:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p21:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p22:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p23:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p24:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p25:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p26:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p27:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p28:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p29:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p3:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p30:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p31:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p32:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p33:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p34:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p35:*:*:*:*:*:*
• cpe:2.3:a:checkmk:checkmk:2.0.0:p36:*:*:*:*:*:*

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