Description
Rsyslog is a rocket-fast system for log processing. From versions 1.15.0 to 8.2610.0, rsyslog's omfile dynaFile facility intentionally allows templates to generate flexible output paths. This supports valid deployments that route logs into different directories or use dynamically generated file names. A deployment becomes unsafe when a dynaFile template uses a value influenced by untrusted input as a path component without explicit secure-path handling. In that configuration, the rendered path can escape the operator's intended log directory. This is not limited to the RFC5424 HOSTNAME field. Any untrusted value that reaches a dynaFile path component can create the condition. At time of publication, there are no publicly available patches.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| rsyslog | rsyslog | >= 1.15.0, <= 8.2610.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | rsyslog | No fix yet | — |
| Debian 13 | rsyslog | No fix yet | — |
| Debian 12 | rsyslog | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | rsyslog | No fix yet | — |
| Ubuntu 26.04 LTS | rsyslog | No fix yet | — |
| Ubuntu 24.04 LTS | rsyslog | No fix yet | — |
| Ubuntu 22.04 LTS | rsyslog | No fix yet | — |
| Ubuntu 14.04 LTS | rsyslog | No fix yet | — |
Show 3 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 20.04 LTS | rsyslog | No fix yet | — |
| Ubuntu Pro 18.04 LTS | rsyslog | No fix yet | — |
| Ubuntu Pro 16.04 LTS | rsyslog | No fix yet | — |
SUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES 15 SP7 | rsyslog | 8.2608.0-150700.3.29.1 | SUSE-SU-2026:5082-1 |
| SLES 15 SP6 | rsyslog | 8.2406.0-150600.12.30.1 | SUSE-SU-2026:5100-1 |
| SLES 15 SP5 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
| SLES 15 SP4 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
| SLES 12 SP5 | rsyslog | 8.2106.0-8.30.2 | SUSE-SU-2026:5089-1 |
Show 7 more (older releases, extended support, other products)Fewer releases
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| SLES for SAP 16.0 | rsyslog | 8.2608.0-160000.1.1 | SUSE-SU-2026:24598-1 |
| SLES for SAP 15 SP6 | rsyslog | 8.2406.0-150600.12.30.1 | SUSE-SU-2026:5100-1 |
| SLES for SAP 15 SP5 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
| SLES for SAP 15 SP4 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
| SLES 16.0 | rsyslog | 8.2608.0-160000.1.1 | SUSE-SU-2026:24598-1 |
| SLE HPC 15 SP5 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
| SLE HPC 15 SP4 | rsyslog | 8.2306.0-150400.5.51.1 | SUSE-SU-2026:5122-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | rsyslog | 8.2608.0-4.1 | openSUSE-SU-2026:12349-1 |
| openSUSE Leap 16.0 | rsyslog | 8.2608.0-160000.1.1 | openSUSE-SU-2026:22184-1 |
Amazon Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Amazon Linux 2023 | rsyslog +11 | 8.2204.0-3.amzn2023.0.8 | ALAS2023-2026-3157 |
| Amazon Linux 2 | rsyslog +17 | 8.24.0-57.amzn2.2.0.4 | ALAS2-2026-3967 |
Azure Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Azure Linux 3 | rsyslog | No fix yet | — |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | rsyslog +35 | No fix yet | — |
Advisories 10
- WID-SEC-2026-4119 rsyslog: Schwachstelle ermöglicht Manipulation von Dateien BSI CERT-Bund (WID) · Nov 12, 2026
- SUSE-SU-2026:24598-1 Security update for rsyslog SUSE / openSUSE Security Updates · Nov 10, 2026
- SUSE-SU-2026:5122-1 Security update for rsyslog SUSE / openSUSE Security Updates · Nov 6, 2026
- SUSE-SU-2026:5100-1 Security update for rsyslog SUSE / openSUSE Security Updates · Nov 5, 2026
- SUSE-SU-2026:5089-1 Security update for rsyslog SUSE / openSUSE Security Updates · Nov 4, 2026
- SUSE-SU-2026:5082-1 Security update for rsyslog SUSE / openSUSE Security Updates · Nov 3, 2026
- openSUSE-SU-2026:22184-1 Security update for rsyslog SUSE / openSUSE Security Updates · Oct 31, 2026
- openSUSE-SU-2026:12349-1 rsyslog-8.2608.0-4.1 on GA media SUSE / openSUSE Security Updates · Oct 31, 2026
- ALAS2-2026-3967 Important: rsyslog security update (Amazon Linux 2) Amazon Linux Security Center (ALAS) · Oct 12, 2026
- ALAS2023-2026-3157 Important: rsyslog security update (Amazon Linux 2023) Amazon Linux Security Center (ALAS) · Oct 12, 2026