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CVE-2026-50567

Fission is an open-source, Kubernetes-native serverless framework that simplifies the deployment of functions and applications on Kubernetes. Prior to version 1.25.0, Unarchive in pkg/utils/zip.go joined each archive entry name with the destination directory via filepath.Join and wrote the result without checking whether the resolved path stayed under the destination. A zip entry named ../../tmp/evil therefore landed at /tmp/evil. An attacker who could control a Package.Spec.Source.URL or Deploy
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:c9975c3452853b5685326de011e1a9c73bf500f8f56716ec1ad1f03d63cbf8a8
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0

Affected products and versions

1 source assertion
{"product":"fission","vendor":"fission","versions":[{"status":"affected","version":"< 1.25.0"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.7,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"HIGH","privilegesRequired":"LOW","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:N/I:H/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

1 source assertion
{"cweId":"CWE-22","description":"CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/problemTypes/0/descriptions/0

Source references

3 source assertions
{"name":"https://github.com/fission/fission/pull/3444","tags":["x_refsource_MISC"],"url":"https://github.com/fission/fission/pull/3444"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/references/1
{"name":"https://github.com/fission/fission/releases/tag/v1.25.0","tags":["x_refsource_MISC"],"url":"https://github.com/fission/fission/releases/tag/v1.25.0"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/references/2
{"name":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff","tags":["x_refsource_CONFIRM"],"url":"https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:572c16ef171ee8413a0fbfeee51f7e36314418bf99f6c4d1330bfca5d5fa937f · sha256:17bb247c1b632c19… · /containers/cna/references/0

Attribution and limitations

  • CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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