# CVE-2022-51022: YiShaAdmin 3.1 Unauthenticated Path Traversal via DownloadFile endpoint

Status: published. Published: 2026-10-22. Updated: 2026-11-03.

YiShaAdmin 2.2 through 3.1, fixed in commit 025b062, contains an unauthenticated path traversal vulnerability in the /admin/File/DownloadFile endpoint that allows attackers to read and delete arbitrary files via the filePath parameter. Attackers can send crafted GET requests with directory traversal sequences in filePath and set the delete parameter to read or remove system files like etc/passwd. Exploitation evidence was first observed by the Shadowserver Foundation on 2023-10-20.

## Remediation

- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/liukuo362573/YiShaAdmin/commit/025b0628b1295bd2d9fd6c9b5b82692a345151ef
- fix: The reporting source identifies this reference as a patch. Check the advisory for affected versions and supported release branches. (source: CNA: VulnCheck) — https://github.com/liukuo362573/YiShaAdmin/commit/c3b66e66bf6d70a561190cd8da7f4df7b141931d

## Affected products and versions

- liukuo362573 / YiShaAdmin (liukuo362573/YiShaAdmin): ≥ 2.2; ≤ 3.1 (affected, custom); 025b0628b1295bd2d9fd6c9b5b82692a345151ef (unaffected, git). Source: CNA: VulnCheck

## Severity and prioritization

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N; source: CNA: VulnCheck

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H; source: CNA: VulnCheck

- CVSS 4.0: 8.8 (high); CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X; source: NVD: disclosure@vulncheck.com

- CVSS 3.1: 9.1 (critical); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H; source: NVD: disclosure@vulncheck.com

- CISA KEV: No listing in collected sources

- EPSS: 0.79% as of 2026-11-03; percentile 56.43%

- SSVC: exploitation poc; automatable yes; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-22

## Exploit evidence

- exploit: https://huntr.com/bounties/2acdd87a-12bd-4ce4-994b-0081eb908128 (CNA: VulnCheck)

## References

- https://huntr.com/bounties/2acdd87a-12bd-4ce4-994b-0081eb908128 (CNA: VulnCheck; technical-description, exploit)

- https://github.com/liukuo362573/YiShaAdmin/commit/025b0628b1295bd2d9fd6c9b5b82692a345151ef (CNA: VulnCheck; patch)

- https://github.com/liukuo362573/YiShaAdmin/commit/c3b66e66bf6d70a561190cd8da7f4df7b141931d (CNA: VulnCheck; patch)

- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/yishaadmin-lfi.yaml (CNA: VulnCheck; technical-description)

- https://www.vulncheck.com/advisories/yishaadmin-3.1-unauthenticated-path-traversal-via-downloadfile-endpoint (CNA: VulnCheck; third-party-advisory)

- https://github.com/liukuo362573/YiShaAdmin/commit/025b0628b1295bd2d9fd6c9b5b82692a345151ef (disclosure@vulncheck.com)

- https://github.com/liukuo362573/YiShaAdmin/commit/c3b66e66bf6d70a561190cd8da7f4df7b141931d (disclosure@vulncheck.com)

- https://github.com/projectdiscovery/nuclei-templates/blob/main/http/vulnerabilities/other/yishaadmin-lfi.yaml (disclosure@vulncheck.com)

- https://huntr.com/bounties/2acdd87a-12bd-4ce4-994b-0081eb908128 (disclosure@vulncheck.com)

- https://www.vulncheck.com/advisories/yishaadmin-3.1-unauthenticated-path-traversal-via-downloadfile-endpoint (disclosure@vulncheck.com)

## Provenance

- CNA: VulnCheck: https://www.cve.org/CVERecord?id=CVE-2022-51022; retrieved 2026-11-03; source updated 2026-11-03

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2022-51022; retrieved 2026-11-03; source updated 2026-11-03

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2022-51022; retrieved 2026-11-03; source updated Not reported

Revision: eabd546776723f607cd240e54f8e9136c1c4b5db7f73d8f3bab1100776ab253f

Canonical: https://y2.dev/cve/CVE-2022-51022

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