What’s Vulnerable › Vulnerabilities

CVE-2022-3979: NagVis CoreLogonMultisite.php checkAuthCookie type conversion

• Severity: high (CVSS 8.1 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.1% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2022-11-13 · updated 2026-06-17
• Weakness: CWE-704

Description

A vulnerability was found in NagVis up to 1.9.33 and classified as problematic. This issue affects the function checkAuthCookie of the file share/server/core/classes/CoreLogonMultisite.php. The manipulation of the argument hash leads to incorrect type conversion. The attack may be initiated remotely. The complexity of an attack is rather high. The exploitation is known to be difficult. Upgrading to version 1.9.34 is able to address this issue. The identifier of the patch is 7574fd8a2903282c2e0d1feef5c4876763db21d5. It is recommended to upgrade the affected component. The identifier VDB-213557 was assigned to this vulnerability.

Affected products

• Nagvis: before 1.9.34 — fixed in 1.9.34

How to fix

Upgrade to a fixed version: Nagvis 1.9.34. Check the vendor advisory for mitigations.

References

• https://github.com/NagVis/nagvis/commit/7574fd8a2903282c2e0d1feef5c4876763db21d5
• https://github.com/NagVis/nagvis/releases/tag/nagvis-1.9.34
• https://vuldb.com/?ctiid.213557
• https://vuldb.com/?id.213557
• https://www.sonarsource.com/blog/checkmk-rce-chain-2/
• https://github.com/NagVis/nagvis/commit/7574fd8a2903282c2e0d1feef5c4876763db21d5
• https://github.com/NagVis/nagvis/releases/tag/nagvis-1.9.34
• https://lists.debian.org/debian-lts-announce/2025/05/msg00000.html
• https://vuldb.com/?ctiid.213557
• https://vuldb.com/?id.213557
• https://www.sonarsource.com/blog/checkmk-rce-chain-2/

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