CVE-2026-116372 MISP mispguard - Bypass Filtering

MISP mispguard contains a bypass vulnerability caused by improper handling of HTTP 2xx status codes other than 200 in process_feed_response, letting attackers controlling feed endpoints bypass filtering and inject malicious data, exploit requires attacker control of a configured feed endpoint.

CVSS base score 7.7 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
View the NVD record ↗

Details

Type
Bypass Filtering
Impact
Data Tampering
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:N/SI:H/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
26 October 2026
Updated
26 October 2026
Weakness
CWE-20

Vendor fix

Update mispguard to properly filter all HTTP 2xx responses or apply latest patches.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

References

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