CVE-2026-104016 ProtobufParser - Integer Overflow

ProtobufParser contains an integer overflow in length-prefixed string and bytes field parsing, caused by 32-bit signed arithmetic overflow in length calculation, letting attackers cause denial of service via OutOfMemoryError, exploit requires ability to submit crafted data for parsing.

CVSS base score 7.5 /10
High
CISA KEV
Not listed
Public exploit
None known
Authentication
Not required
EPSS
0.68% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Integer Overflow
Impact
Denial Of Service
CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Published
28 October 2026
Updated
29 October 2026
Weakness
CWE-190

Vendor fix

Update to a version including the February 2026 hardening commit that adds overflow guards to string-length parsing.

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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