CVE-2026-55556

Publication date 24 June 2026

Last updated 21 September 2026

Ubuntu priority

Medium

Why this priority?

Description

heap overflow in the optional rsyslog imhttp input module

Read the notes from the security team

Status

Package Ubuntu Release Status
rsyslog 26.04 LTS resolute
Not affected
25.10 questing
Not affected
24.04 LTS noble
Not affected
22.04 LTS jammy
Not affected
20.04 LTS focal
Not affected
18.04 LTS bionic
Not affected
16.04 LTS xenial
Not affected
14.04 LTS trusty
Not affected

Notes

mdeslaur

The imhttp module isn't packages in Ubuntu

Patch details

For informational purposes only. We recommend not to cherry-pick updates. How can I get the fixes?

Package Patch details
rsyslog

Severity score breakdown

CVSS version: CVSS v4.0

Base score 8.2 · High

Vector: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

References

Other references

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