Description
ClusterLabs pcs before version 0.9.157 is vulnerable to a cross-site scripting vulnerability due to improper validation of Node name field when creating new cluster or adding existing cluster.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| ClusterLabs | pcs | 0.9.157 | — |
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 | pcs | 0.9.155+dfsg-2 | — |
| Debian 13 | pcs | 0.9.155+dfsg-2 | — |
| Debian 12 | pcs | 0.9.155+dfsg-2 | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu Pro 22.04 LTS | pcs | 0.10.11-2ubuntu3+esm1 | USN-7614-1 |
| Ubuntu Pro 20.04 LTS | pcs | 0.10.4-3ubuntu0.1~esm1 | USN-7614-1 |
| Ubuntu Pro 16.04 LTS | pcs | 0.9.149-1ubuntu1.1+esm1 | USN-7614-1 |
Advisories 1
- USN-7614-1 pcs vulnerabilities Ubuntu Security Notices (USN) · Jun 25, 2026