CVE-2026-50567

HIGHPre-NVD 7.77.7—
EchelonGraph scoreMEDIUM confidence

This high-severity CVE scores 7.7 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.3%, top 78% 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).

Triggered by: NVD CVSS baseline
Sources: epss, secondary
7.7EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 7.7Exploit: None knownExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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 Deployment.URL archive could induce the fetcher (running as the per-environment pod's fission-fetcher sidecar) to write files anywhere that process could reach: into other tenants' /packages// directories, into mounted secret/config volumes, or into the fetcher's own binary. This issue has been patched in version 1.25.0.

CVSS v3
7.7
EG Score
7.7(medium)
EG Risk
39(Track)
EG Risk 39/100SSVC: Track

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity77% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
22%
KEV
Not listed

Published

June 10, 2026

Last Modified

June 10, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
Patch available. Sources: github_pr, github_release, github.
github Patch Available

Zip Slip in pkg/utils/zip.go:Unarchive allows fetcher to write outside the destination directory · Advisory · fission/fission · GitHub

https://github.com/fission/fission/security/advisories/GHSA-q6vm-xqc9-v3ff
github_release Patch Available

v1.25.0

Patch available: fission/fission v1.25.0

https://github.com/fission/fission/releases/tag/v1.25.0
github_pr

fix(utils): confine zip extraction with os.Root (zip-slip / CWE-22)

Fix merged in fission/fission PR #3444 on 2026-06-01 — awaiting tagged release

https://github.com/fission/fission/pull/3444

Vendor Advisories for CVE-2026-50567(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Affected Packages

(1 across 1 ecosystem)
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/fission/fission—1.25.0—

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

Data Freshness Timeline

(refreshed 7× in last 7d / 48× 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.

Showing the most recent 100 of 120 total refreshes for this CVE.

  1. 2026-08-30 19:17 UTCEPSS rescore
  2. 2026-08-30 01:22 UTCEPSS rescore
  3. 2026-08-28 21:41 UTCEPSS rescore
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  7. 2026-08-25 00:20 UTCEG score recompute
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  1. 2026-08-12 16:10 UTCEG score recompute
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  23. 2026-08-01 04:16 UTCEPSS rescore
  24. 2026-07-31 00:42 UTCEG score recompute
  25. 2026-07-30 16:28 UTCEPSS rescore
  26. 2026-07-30 09:47 UTCEG score recompute
  27. 2026-07-30 01:30 UTCEPSS rescore
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  30. 2026-07-28 02:18 UTCEG score recompute
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  36. 2026-07-23 03:18 UTCEG score recompute
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  40. 2026-07-19 14:31 UTCEPSS rescore
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  44. 2026-07-16 17:03 UTCEPSS rescore
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  55. 2026-07-09 19:10 UTCEPSS rescore
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  64. 2026-06-30 23:22 UTCEPSS rescore
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  67. 2026-06-28 14:07 UTCEPSS rescore
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  71. 2026-06-25 13:49 UTCEPSS rescore
  72. 2026-06-24 14:05 UTCEPSS rescore
  73. 2026-06-23 21:33 UTCEPSS rescore
  74. 2026-06-23 21:33 UTCEPSS rescore
  75. 2026-06-22 14:25 UTCEPSS rescore

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Frequently asked(5)

What is CVE-2026-50567?
CVE-2026-50567 is a high vulnerability published on June 10, 2026. 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…
When was CVE-2026-50567 disclosed?
CVE-2026-50567 was first published in the National Vulnerability Database on June 10, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-50567 actively exploited?
CVE-2026-50567 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 77.7% of all scored CVEs.
What is the CVSS score of CVE-2026-50567?
CVE-2026-50567 has a CVSS v3 base score of 7.7 (NVD).
How do I remediate CVE-2026-50567?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-50567, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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