CVE-2026-63345 Refitter - Code Injection

Refitter < 2.1.2 contains a code injection caused by unescaped OpenAPI path keys in Refit route attributes, letting attackers execute code via a crafted path in generated assemblies, exploit requires compilation and loading of generated code.

CVSS base score 8.6 /10
High
CISA KEV
Not listed
Public exploit
None known
EPSS
0.35% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Code Injection
Impact
Remote Code Execution
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:A/VC:H/VI:H/VA:H/SC:N/SI:N/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
30 October 2026
Updated
1 November 2026
Weakness
CWE-94

Vendor fix

Update to version 2.1.2 or later.

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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