CVE-2026-50545 json
Fission Environment CRD PodSpec Injection Leading to Node Escape and Cluster Takeover
published 2026-06-10 4 mo ago modified 2026-07-07 4 mo ago also GHSA-wmgg-3p4h-48x7 , GO-2026-5860 , EUVD-2026-36098
- cvss
- 9.9
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.3%
- EPSS 0.3% chance of exploitation in 30 days, percentile 22%
- public exploits
- 0
- none known
Summary
Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.24.0, the Environment.spec.runtime.podSpec / spec.builder.podSpec passthrough lacked validation, and MergePodSpec propagated dangerous fields into the generated pods. This issue has been patched in version 1.24.0.
Patch / fix
- go github.com/fission/fission 1.24.0
- govulncheck-vulndb openSUSE Leap 16.0 0.0.20260723T184607-160000.1.1
opensuse advisories openSUSE-SU-2026:21483-1
- github.com/fission/fission@8fa7994 commit
- github.com/fission/fission@e484df8 commit
- github.com/fission/fission#3390 pull request
- github.com/fission/fission#3391 pull request
- github.com/fission/fission/releases/tag/v1.24.0 release
CISA SSVC
- Exploitation
- none
- Automatable
- no
- Technical impact
- total
- Assessed
- 4 mo ago
Exploit prediction
0.30% chance of exploitation in the next 30 days, higher than 22% of all scored CVEs (FIRST EPSS, 2026-11-08).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
| GitHub | 3.1 | 9.9 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H |
Affected packages
| ecosystem | package | affected | fixed in |
|---|---|---|---|
| go | github.com/fission/fission | <1.24.0 |
1.24.0 |
Affected products
- fission fission
Classification
References
-
github.com
/fission/fission/pull/3390
web, patch
-
github.com
/fission/fission/pull/3391
web, patch
-
github.com
/fission/fission/commit/8fa799417c77ce8a0189d9858bfe11ece29b84a6
web, patch
-
github.com
/fission/fission/commit/e484df8460bb4e8026e24210120602aa7f181f64
web, patch
-
github.com
/fission/fission/security/advisories/GHSA-wmgg-3p4h-48x7
web, advisory
-
github.com
/fission/fission/releases/tag/v1.24.0
web
-
nvd.nist.gov
/vuln/detail/CVE-2026-50545
advisory
-
github.com
/fission/fission
package
Sources
- CVE List CVE-2026-50545
- GitHub Advisory GHSA-wmgg-3p4h-48x7
- NVD CVE-2026-50545
- OSV GO-2026-5860
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.