CVE-2018-1002104
Versions < 1.5 of the Kubernetes ingress default backend, which handles invalid ingress traffic, exposed prometheus metrics publicly.
- 5.3MediumCVSS base score
- 1.1%Exploitation in 30 daysEPSS · top 33% of all CVEs
- NoKnown exploitednot in CISA's KEV catalog
- NonePublic exploitsnone known yet
Description
Versions < 1.5 of the Kubernetes ingress default backend, which handles invalid ingress traffic, exposed prometheus metrics publicly.
Timeline
ID reserved
By kubernetes
- 14 months later
· 14 months later
Published
- 5 years later
· 5 years later
Record updated
Changes after publication (a new score, a public exploit, EPSS crossing 1, 10 or 50 %, leaving KEV) are kept since November 2026; earlier ones are not known.
Scores
| Scored by | CVSS | Score | Vector |
|---|---|---|---|
| kubernetesCNA (assigner) | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
| NVDNVD · Modified | 3.1 | Medium5.3 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N |
- EPSS (exploitation in 30 days)
- 1.1% · top 33% of all CVEs (11 Nov 2026)
The list uses the assigner's score when there is one, then CISA's, then NVD's: Medium 5.3.
Affected products
Kubernetes · k8s.gcr.io/defaultbackend
- affected defaultbackend – < 1.5
Affected packages
From reviewed advisories of the GitHub Advisory Database.
- Gok8s.io/ingress-nginxGHSA-p3x5-5xpx-9phm (opens in a new tab)
What to do
Workaround: Mask the /metrics endpoint with an Ingress rule so that metrics aren't exposed publicly. See https://github.com/kubernetes/ingress-nginx/issues/1733#issuecomment-358492359
References
References1
- https://github.com/kubernetes/ingress-nginx/pull/3125 (opens in a new tab)x_refsource_CONFIRMx_transferred
Sources
The same CVE in the primary databases and aggregators, to check against.
- CVE.org record (opens in a new tab)
- CVE List JSON (GitHub) (opens in a new tab)
- NVD (opens in a new tab)
- FIRST EPSS (opens in a new tab)
- EUVD EUVD-2022-4671 (opens in a new tab)
- OSV.dev (opens in a new tab)
- GitHub Advisory GHSA-p3x5-5xpx-9phm (opens in a new tab)
- CIRCL Vulnerability-Lookup (opens in a new tab)
Badge for a README or a ticket
[](https://cveledger.app/cve/CVE-2018-1002104)Record last updated .