Description
Munin before 2.999.6 has a local file write vulnerability when CGI graphs are enabled. Setting multiple upper_limit GET parameters allows overwriting any file accessible to the www-data user.
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 | munin | 2.0.31-1 | — |
| Debian 13 | munin | 2.0.31-1 | — |
| Debian 12 | munin | 2.0.31-1 | — |
| Debian 8 | munin | 2.0.25-1+deb8u1 | DSA-3794-1 |
| Debian 7 | munin | 2.0.6-4+deb7u3 | DLA-836-1 |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 16.04 LTS | munin | 2.0.25-2ubuntu0.16.04.2 | — |
| Ubuntu 14.04 LTS | munin | 2.0.19-3ubuntu0.2 | USN-3215-1 |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | munin | 2.0.66-3.5 | openSUSE-SU-2024:11067-1 |
Alpine
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Alpine v3.5 | munin | 2.0.33-r0 | — |
Advisories 4
- DLA-836-1 munin - security update Debian Security (DSA / DLA) · Mar 9, 2026
- DSA-3794-1 munin - security update Debian Security (DSA / DLA) · Mar 9, 2026
- USN-3215-1 munin vulnerability Ubuntu Security Notices (USN) · Feb 10, 2026
- openSUSE-SU-2024:11067-1 munin-2.0.66-3.5 on GA media SUSE / openSUSE Security Updates · Feb 4, 2026
References
- 96399 vdb-entry
- https://bugs.debian.org/855705
- DSA-3794 vendor-advisory
- GLSA-201710-05 vendor-advisory
- https://github.com/munin-monitoring/munin/issues/721