Rancher 2 through 2.2.4 is vulnerable to a Cross-Site Websocket Hijacking attack that allows an exploiter to gain access to clusters managed by Rancher. The attack requires a victim to be logged into a Rancher server, and then to access a third-party site hosted by the exploiter. Once that is accomplished, the exploiter is able to execute commands against the cluster's Kubernetes API with the permissions and identity of the victim.
CVE-2019-13209
This medium-severity CVE scores 6.1 under NVD CVSS v3. EPSS exploit probability: 0.2%, top 53% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 6.1
- EG Score
- 6.1(medium)
- EPSS
- 61.7%
- KEV
- Not listed
Published
September 4, 2019
Last Modified
November 21, 2024
References (4)
- cve@mitrehttps://forums.rancher.com/c/announcements
- cve@mitrehttps://forums.rancher.com/t/rancher-release-v2-2-5-addresses-rancher-cve-2019-13209/14801
- af854a3a-2127-422b-91ae-364da2661108https://forums.rancher.com/c/announcements
- af854a3a-2127-422b-91ae-364da2661108https://forums.rancher.com/t/rancher-release-v2-2-5-addresses-rancher-cve-2019-13209/14801
Affected Packages
(1 across 1 ecosystem)
Go(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/rancher/rancher | — | 2.2.5-rc6.0.20190621200032-0ddffe484adc+incompatible | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 12× in last 7d / 47× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-07-07 13:42 UTCEPSS rescore
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- 2026-07-03 01:05 UTCOSV refresh
- 2026-07-02 16:56 UTCEPSS rescore
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- 2026-06-22 14:23 UTCEPSS rescore
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- 2026-06-14 19:13 UTCOSV refresh
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- 2026-05-29 13:42 UTCEPSS rescore
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- 2026-05-27 14:59 UTCEG score recompute
- 2026-05-27 13:38 UTCEPSS rescore
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- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 07:17 UTCEPSS rescore
- 2026-05-26 03:46 UTCOSV refresh
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Frequently asked(5)
What is CVE-2019-13209?
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Dependency Blast Radius
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