CVE-2019-12303 json
Rancher code injection via fluentd config commands
published 2019-06-06 7 y ago modified 2026-06-17 4 mo ago also GHSA-53pj-67m4-9w98 , GO-2024-2762 , EUVD-2022-2485
- cvss
- 8.8
- version 3.0, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 2.0%
- EPSS 2.0% chance of exploitation in 30 days, percentile 80%
- public exploits
- 0
- none known
Summary
In Rancher 2 through 2.2.3, Project owners can inject additional fluentd configuration to read files or execute arbitrary commands inside the fluentd container.
Patch / fix
- go github.com/rancher/rancher 2.2.4, 2.2.4+incompatible
Exploit prediction
1.98% chance of exploitation in the next 30 days, higher than 80% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| NVD | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| NVD | 2.0 | 6.5 | AV:N/AC:L/Au:S/C:P/I:P/A:P |
| GitHub | 3.0 | 8.8 | CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/rancher/rancher | >=2.0.0, <2.2.4 >=2.0.0+incompatible, <2.2.4+incompatible |
2.2.4 2.2.4+incompatible |
Classification
- Weakness
-
- CWE-74 Improper Neutralization of Special Elements in Output Used by a Downstream Component
References
-
forums.rancher.com
/c/announcements
release-notes, vendor-advisory
-
forums.rancher.com
/t/rancher-release-v2-2-4-addresses-rancher-cve-2019-12274-and-cve-2019-12303/14466
web, release-notes, vendor-advisory
-
nvd.nist.gov
/vuln/detail/CVE-2019-12303
advisory
-
github.com
/rancher/rancher
package
-
github.com
/advisories/GHSA-53pj-67m4-9w98
advisory
Sources
- CVE List CVE-2019-12303
- GitHub Advisory GHSA-53pj-67m4-9w98
- NVD CVE-2019-12303
- OSV GO-2024-2762
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.