CVE-2026-4897Allocation of Resources Without Limits or Throttling in Policykit-1

Severity
5.5MEDIUMNVD
EPSS
0.0%
top 97.32%
CISA KEV
Not in KEV
Exploit
No known exploits
Affected products
Timeline
PublishedMar 26
Latest updateApr 14

Description

A flaw was found in polkit. A local user can exploit this by providing a specially crafted, excessively long input to the `polkit-agent-helper-1` setuid binary via standard input (stdin). This unbounded input can lead to an out-of-memory (OOM) condition, resulting in a Denial of Service (DoS) for the system.

CVSS vector

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:HExploitability: 1.8 | Impact: 3.6

Affected Packages1 packages

🔴Vulnerability Details

2
OSV
CVE-2026-4897: A flaw was found in polkit2026-03-26
GHSA
GHSA-v4jf-wwp4-588q: A flaw was found in polkit2026-03-26

📋Vendor Advisories

3
Ubuntu
polkit vulnerabilities2026-04-14
Red Hat
polkit: Polkit: Denial of Service via unbounded input processing through standard input2026-03-26
Debian
CVE-2026-4897: policykit-1 - A flaw was found in polkit. A local user can exploit this by providing a special...2026

🕵️Threat Intelligence

1
Wiz
CVE-2026-4897 Impact, Exploitability, and Mitigation Steps | Wiz