Cross-site scripting in ClusterLabs pcs
Priority LOW 30CWE-79Published · Updated
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- Required
- Attack complexity
- Low
- Impact type
- Cross-site scripting
- Confidentiality · integrity · availability
- Low · Low · None
- Fix status
- Will not fix Red Hat: no fix planned
Attack profile from CVSS 3.0 · NVD. Fix status from CNA and Red Hat. Impact type from CWE-79.
Summary
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.
Why it matters now
EPSS 0.01176 67th percentileScored 2026-11-07
Fix Will not fix Red Hat: no fix planned
SSVC decision points
Not available: CISA has not published SSVC decision points for this record.
Affected products
| Vendor | Product | Affected versions | Fixed in | Status | Source |
|---|---|---|---|---|---|
| ClusterLabs | pcs | 0.9.157 | — | No fix listed | CNA |
- pcs VendorClusterLabs Affected 0.9.157 Fixed in — No fix listed CNA
CPE configurations NVD · 1
| CPE | Versions | Role | Vendor |
|---|---|---|---|
| cpe:2.3:a:clusterlabs:pcs:*:*:*:*:*:*:*:* | before 0.9.157 | Vulnerable | ClusterLabs |
- cpe:2.3:a:clusterlabs:pcs:*:*:*:*:*:*:*:* Versions before 0.9.157 Vulnerable ·ClusterLabs
Remediation
No fixed version listed by the sources yet.
Vendor assessments
Red Hat
Red Hat rating: Low. Red Hat's page for this CVE →
| Product | Status | Plan or fix |
|---|---|---|
| Red Hat Enterprise Linux 6 | Affected | No fix planned: Will not fix |
| Red Hat Enterprise Linux 7 | Affected | No fix planned: Will not fix |
| Red Hat Storage 3 | Affected | No fix planned: Will not fix |
Timeline
- 2026-10-02 Threatist record created from CVE-2017-2661
- 2026-10-03 Alias added: GHSA-qc8r-mjjf-5j6v
References
More ClusterLabs Pcs vulnerabilities
- TI-2023-02175 It was discovered that an update for PCS package in RHBA-2023:2151 erratum released as… CVSS 3.1CRITICAL 9.8
- TI-2022-00946 Improper authentication in clusterlabs/pcs CVSS 3.1HIGH 8.8
- TI-2016-00646 Cross-site request forgery (CSRF) vulnerability in pcsd web UI in pcs before 0.9.149. CVSS 3.0HIGH 8.8
- TI-2016-00647 Session fixation vulnerability in pcsd in pcs before 0.9.157. CVSS 3.0HIGH 8.1
- TI-2022-02533 Incorrect default permissions in ClusterLabs/pcs CVSS 3.1HIGH 7.8
Sources
- CVE-2017-2661 · CVE Program
- CVE-2017-2661 · NVD
- FIRST EPSS
- GHSA-qc8r-mjjf-5j6v · GitHub Advisory Database · CC BY 4.0
- CVE-2017-2661 · Red Hat security data · CC BY 4.0
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