# SUSE-SU-2026:3860-1: Security update for rsyslog

> A heap buffer overflow in rsyslog's RainerScript replace function allows attackers to execute arbitrary code or cause denial of service.

- **Severity:** Not scored
- **Exploited in the wild:** Not known
- **Login needed:** Not stated
- **Attackable:** Over the internet
- **Victim action needed:** Not needed
- **Fix available:** Yes
- **Published:** 28 Aug 2026

## What is SUSE-SU-2026:3860-1?

SUSE-SU-2026:3860-1 is a memory corruption vulnerability in rsyslog, published on 28 Aug 2026. It can be exploited over the network, with no action from the victim.

### Official description

This update for rsyslog fixes the following issue:

- Heap buffer overflow in the core `RainerScript` `replace()` function (bsc#1275926).

## Which versions are affected by SUSE-SU-2026:3860-1?


| Package | Ecosystem | Affected | Fixed in |
| --- | --- | --- | --- |
| `rsyslog` | SUSE:Linux Enterprise Server 15 SP6-LTSS | All versions | 8.2406.0-150600.12.22.1 |
| `rsyslog` | SUSE:Linux Enterprise Server for SAP Applications 15 SP6 | All versions | 8.2406.0-150600.12.22.1 |

## How do I fix SUSE-SU-2026:3860-1?

Apply the vendor's patch.

## Is SUSE-SU-2026:3860-1 being exploited?

There is no known exploitation of SUSE-SU-2026:3860-1 in the wild and no public exploit code.

## Fix prompt for AI coding agents

```text
Check this codebase for SUSE-SU-2026:3860-1 and fix it if it is affected.

What it is: SUSE-SU-2026:3860-1 is a memory corruption vulnerability in rsyslog, published on 28 Aug 2026. It can be exploited over the network, with no action from the victim.
Exploitation: There is no known exploitation of SUSE-SU-2026:3860-1 in the wild and no public exploit code.

Affected product: rsyslog. No package-level version data is available, so check the vendor advisory linked from the reference page.

Task:
1. Search the dependency manifests and lockfiles (for example package.json, package-lock.json, requirements.txt, poetry.lock, uv.lock, pom.xml, build.gradle, go.mod, Cargo.lock, Gemfile.lock) and any Dockerfiles for the affected packages, including transitive dependencies.
2. If an affected version is in use, upgrade it to the fixed version for its release line with the project's package manager, so the lockfile is regenerated. Prefer the smallest upgrade that fixes it.
3. If there is no fix, or the upgrade would break the build, do not guess: explain the risk and the safest workaround instead.
4. Run the tests and summarise what changed and why.
5. If nothing in the project is affected, say so and change nothing.

Reference: https://insights.sbomify.com/SUSE-SU-2026-3860-1/ (Markdown: https://insights.sbomify.com/SUSE-SU-2026-3860-1/index.md)
```

## Sources

- OSV: https://osv.dev/vulnerability/SUSE-SU-2026:3860-1

---
From sbomify Insights: https://insights.sbomify.com/SUSE-SU-2026-3860-1/
Summaries are generated and may contain mistakes; the official description above is the record.