CVE-2026-4746

CRITICAL

Heap Buffer Over-Write Vulenrabilty in timeplus-io/proton

Title source: cna

Description

Out-of-bounds Write vulnerability in timeplus-io proton (base/poco/Foundation/src‎ modules). This vulnerability is associated with program files inflate.C. This issue affects proton: before 1.6.16.

References (1)

[Patch] https://github.com/timeplus-io/proton/pull/943

Scores

CVSS v4 10.0

EPSS 0.0006

EPSS Percentile 18.6%

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H/E:A/S:N/AU:Y/R:U/V:C/RE:L/U:Amber

CISA SSVC

Vulnrichment

Exploitation none

Automatable yes

Technical Impact total

Details

CWE

CWE-787

Status published

Products (1)

timeplus-io/proton < 1.6.16

Published Mar 24, 2026

Tracked Since Mar 24, 2026