zrok is software for sharing web services, files, and network resources. From 0.4.23 until 2.0.3, zrok2 copy stores attacker-controlled WebDAV or zrok drive paths such as /../outside.txt in the source inventory and passes them to FilesystemTarget.WriteStream, allowing the sync pipeline to write files outside the selected local filesystem destination root. This issue is fixed in version 2.0.3.
CVE-2026-45576
HIGHNVD 7.57.5—Trending — 4 sources updated this week
EchelonGraph scoreMEDIUM confidence
This high-severity CVE scores 7.5 under NVD CVSS v3. EPSS exploit probability: 0.3%, top 74% 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, nvd
7.5
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
- High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS: 0%CVSS: 7.5Exploit: NoneExposed: 0
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 7.5
- EG Score
- 7.5(medium)
- EG Risk
- 34(Track)EG Risk 34/100SSVC: 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 computedSeverity75% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS
- 25.7%
- KEV
- Not listed
Published
May 19, 2026
Last Modified
July 20, 2026
Advisory Details (3)
Auto-updated Jul 16, 2026Patch available. Sources: github_commit, github_release, github.
github Patch Available
zrok copy writes attacker-controlled WebDAV paths outside the destination root · Advisory · openziti/zrok · GitHub
https://github.com/openziti/zrok/security/advisories/GHSA-c656-jcx2-7pqjgithub_release Patch Available
v2.0.3
Patch available: openziti/zrok v2.0.3
https://github.com/openziti/zrok/releases/tag/v2.0.3github_commit
commit a5811e61589d (openziti/zrok)
Fix landed in openziti/zrok commit a5811e61589d — awaiting tagged release
https://github.com/openziti/zrok/commit/a5811e61589d2f804267c6de4a9056db1bdea457Vendor Advisories for CVE-2026-45576(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(2 across 1 ecosystem)
Go(2)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| github.com/openziti/zrok | — | — | — |
| github.com/openziti/zrok/v2 | — | 2.0.3 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 10× in last 7d / 10× 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.
- 2026-07-23 03:16 UTCEG score recompute▼ 0.80
- 2026-07-22 14:08 UTCEPSS rescore
- 2026-07-21 15:24 UTCEPSS rescore
- 2026-07-20 17:08 UTCEPSS rescore
- 2026-07-20 03:15 UTCNVD updateCVSS v3 → 7.5
- 2026-07-19 14:31 UTCEPSS rescore
- 2026-07-19 02:29 UTCEPSS rescore
- 2026-07-18 10:04 UTCEPSS rescore
- 2026-07-16 16:54 UTCEG score recompute▲ 8.30
- 2026-07-16 16:53 UTCMITRE cvelistV5CVSS v3 → 8.3 · CVSS v4 → 8.3
- 2026-06-14 23:18 UTCEPSS rescore
- 2026-06-13 23:00 UTCEPSS rescore
- 2026-06-12 23:12 UTCEPSS rescore
- 2026-05-24 06:14 UTCEG score recompute
Related CVEs(same CWE)
Frequently asked(5)
What is CVE-2026-45576?
CVE-2026-45576 is a high vulnerability published on May 19, 2026. zrok is software for sharing web services, files, and network resources. From 0.4.23 until 2.0.3, zrok2 copy stores attacker-controlled WebDAV or zrok drive paths such as /../outside.txt in the source inventory and passes them to FilesystemTarget.WriteStream, allowing the sync pipeline to write…
When was CVE-2026-45576 disclosed?
CVE-2026-45576 was first published in the National Vulnerability Database on May 19, 2026, with the most recent update on July 20, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-45576 actively exploited?
CVE-2026-45576 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 25.7% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.
What is the CVSS score of CVE-2026-45576?
CVE-2026-45576 has a CVSS v3 base score of 7.5 (NVD).
How do I remediate CVE-2026-45576?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-45576, 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-2026-45576
Is Your Infrastructure Affected by CVE-2026-45576?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.