CVE-2026-101909 Axios - Prototype Pollution

Axios 0.28.0 to 0.34.0 and 1.15.1 to 1.20.0 contain a prototype pollution vulnerability caused by processing inherited serialization options in ToFormData, letting attackers alter data interpretation and cause request failures, exploit requires ability to inject functions.

CVSS base score 8.3 /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
Prototype Pollution
Impact
Denial Of Service, Data Tampering
CVSS vector
CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/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
28 September 2026
Updated
15 October 2026
Weakness
CWE-1321

Vendor fix

Update to versions 0.34.0 or 1.20.0 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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