CVE-2026-46703

CRITICALPre-NVD 9.69.6—
EchelonGraph scoreMEDIUM confidence

This critical-severity CVE scores 9.6 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.5%, top 62% 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
9.6
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 9.6Exploit: NoneExposed: 0

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

Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. Prior to version 0.9.0, Boxlite allows users to specify the OCI image used by containers in the sandbox. However, when processing tar entries in OCI images, Boxlite does not account for the possibility that entries may be symlinks pointing to absolute paths. An attacker can craft a malicious OCI image and distribute it on image hosting platforms such as DockerHub, tricking users into using it. Once a user loads the malicious image, the attacker can write arbitrary content to any path on the host, which can further lead to remote code execution on the host. This issue has been patched in version 0.9.0.

CVSS v3
9.6
EG Score
9.6(medium)
EPSS
38.4%
KEV
Not listed

Published

May 21, 2026

Last Modified

June 11, 2026

Advisory Details (2)

Auto-updated Jun 11, 2026
🔬 Proof of concept available. Patch available. Sources: github_release, github.
github Patch Available🟡 PoC Available

Path Traversal Vulnerability in boxlite Leads to Arbitrary File Write on the Host · Advisory · boxlite-ai/boxlite · GitHub

https://github.com/boxlite-ai/boxlite/security/advisories/GHSA-f396-4rp4-7v2j
github_release Patch Available

v0.9.0

Patch available: boxlite-ai/boxlite v0.9.0

https://github.com/boxlite-ai/boxlite/releases/tag/v0.9.0

Vendor Advisories for CVE-2026-46703(1)

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

Affected Packages

(5 across 4 ecosystems)
crates.io(2)
PackageVulnerable rangeFixed inDependents
boxlite—0.9.0—
boxlite-cli—0.9.0—
Go(1)
PackageVulnerable rangeFixed inDependents
github.com/boxlite-ai/boxlite/sdks/go—0.9.0—
npm(1)
PackageVulnerable rangeFixed inDependents
@boxlite-ai/boxlite—0.9.0—
PyPI(1)
PackageVulnerable rangeFixed inDependents
boxlite0.5.10 ... 0.8.2 (18 versions)0.9.0—

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 7× in last 7d / 62× 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 155 total refreshes for this CVE.

  1. 2026-07-15 16:57 UTCEPSS rescore
  2. 2026-07-15 02:00 UTCEPSS rescore
  3. 2026-07-13 22:30 UTCEPSS rescore
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  1. 2026-06-27 19:33 UTCEG score recompute
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  25. 2026-06-18 03:51 UTCEG score recompute
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Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-46703?
CVE-2026-46703 is a critical vulnerability published on May 21, 2026. Boxlite is a sandbox service that allows users to create lightweight virtual machines (Boxes) and launch OCI containers within them to run untrusted code. Prior to version 0.9.0, Boxlite allows users to specify the OCI image used by containers in the sandbox. However, when processing tar entries in…
When was CVE-2026-46703 disclosed?
CVE-2026-46703 was first published in the National Vulnerability Database on May 21, 2026, with the most recent update on June 11, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-46703 actively exploited?
CVE-2026-46703 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 38.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-46703?
CVE-2026-46703 has a CVSS v3 base score of 9.6 (NVD).
How do I remediate CVE-2026-46703?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-46703, 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

See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-46703

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