Detections
Analytics

Echo: github.com/prometheus/prometheus: security update to 0.305.2

high Tenable Self-Hosted Container Security Plugin ID 463827

Description

There are packages installed that are affected by a vulnerability referenced in the following CVE:

 - Prometheus is an open-source monitoring system and time series database. Prior to versions 3.5.3 and
 3.11.3, the remote read endpoint (/api/v1/read) does not validate the declared decoded length in a snappy-
 compressed request body before allocating memory. An unauthenticated attacker can send a small payload
 that causes a huge heap allocation per request. Under concurrent load this can exhaust available memory
 and crash the Prometheus process. This issue has been patched in versions 3.5.3 and 3.11.3.
 (CVE-2026-42154)

Solution

Update the github.com/prometheus/prometheus library and its related packages to version 0.305.2 or later.

See Also

https://advisory.echohq.com/cve/CVE-2026-42154

Plugin Details

Severity: High

ID: 463827

Version: Revision 1.1

Type: Local

Published: 10/2/2026

Updated: 10/3/2026

Supported Sensors: Tenable Cloud Security, Tenable Self-Hosted Container Security

Risk Information

VPR

Risk Factor: Low

Score: 3

Percentile: 23.72

CVSS v2

Risk Factor: High

Base Score: 7.8

Temporal Score: 5.8

Vector: CVSS2#AV:N/AC:L/Au:N/C:N/I:N/A:C

CVSS Score Source: CVE-2026-42154

CVSS v3

Risk Factor: High

Base Score: 7.5

Temporal Score: 6.5

Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H

Temporal Vector: CVSS:3.0/E:U/RL:O/RC:C

Vulnerability Information

Exploit Ease: No known exploits are available

Patch Publication Date: 9/28/2026

Vulnerability Publication Date: 5/4/2026

Reference Information

CVE: CVE-2026-42154