CVE-2026-110747 ProtobufParser - Denial of Service

ProtobufParser 2.21.6 and 3.1.6+ contain an integer overflow in _readStringKey() caused by signed arithmetic on length prefix, letting attackers cause JVM termination 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
0.39% chance of exploitation in 30 days
View the NVD record ↗

Details

Type
Denial of Service
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 versions where _readStringKey() is fixed, later than 2.21.6 and 3.2.2 or latest available version.

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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