Security Resilience

CVE-2025-8343

Path Traversal in Viglet Shio ≤ 0.3.8

Public PoCPath Traversal
Published
31 July 2025
Modified
17 June 2026
Patch / advisory
View advisory
CVSS Score v4 2.1
Click a component to see what it means
Raw vectorCVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/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
EPSS Score 0.0093 60th percentile
Risk Priority 29 floored blend · peak EPSS

CVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.

Summary

CVE-2025-8343 is a low-severity Path Traversal (CWE-22) vulnerability in Viglet Shio. Its CVSS base score is 2.1 (Low).

Operationally, exploitation aligns with the MITRE ATT&CK technique /etc/passwd and /etc/shadow (T1003.008); ranked in the top 40% of CVEs by exploit likelihood; it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and SI-10 (Information Input Validation) — see the control section below for these in your framework.

Deeper analysis AI-assisted summary

Synthesised by an AI model from the NVD description and linked references — a reading aid, not an authoritative source.

CVE-2025-8343 is a path traversal vulnerability (CWE-22) in openviglet shio versions up to 0.3.8. The issue resides in the shStaticFilePreUpload function within the file shio-app/src/main/java/com/viglet/shio/api/staticfile/ShStaticFileAPI.java, where manipulation of the fileName argument allows attackers to traverse directories. Although described as critical in some sources, the CVSS v3.1 base score is 4.3 (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N), indicating medium severity with low confidentiality impact.

The vulnerability can be exploited remotely by authenticated users with low privileges (PR:L). Attackers can send crafted requests to the affected endpoint, leveraging the fileName parameter to access files outside the intended directory, potentially reading sensitive configuration or data files. No integrity or availability impacts are associated, and the exploit has been publicly disclosed, increasing the risk of immediate use.

Advisories and discussions are tracked in GitHub issues at https://github.com/openviglet/shio/issues/1028 and https://github.com/openviglet/shio/issues/1028#issue-3239418750, with additional details on VulDB at https://vuldb.com/?ctiid.318293, https://vuldb.com/?id.318293, and https://vuldb.com/?submit.617679. No specific patch or mitigation steps are detailed in the provided information, so practitioners should monitor these sources for updates and consider restricting access to the static file API endpoint.

OWASP Top 10 for Web (2025)

A01:2025 Broken Access Control

EU & UK References

Vulnerability Data

A vulnerability was found in openviglet shio up to 0.3.8. It has been rated as critical. This issue affects the function shStaticFilePreUpload of the file shio-app/src/main/java/com/viglet/shio/api/staticfile/ShStaticFileAPI.java. The manipulation of the argument fileName leads to path traversal. The attack may be…

more

initiated remotely. The exploit has been disclosed to the public and may be used.

CWE(s)
CWE-22

Related Threats

MITRE ATT&CK Enterprise Techniques

T1003.008 /etc/passwd and /etc/shadow Credential Access
Adversaries may attempt to dump the contents of <code>/etc/passwd</code> and <code>/etc/shadow</code> to enable offline password cracking.
attack.mitre.org →
T1190 Exploit Public-Facing Application Initial Access
Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.
attack.mitre.org →
Derived from this CVE’s CWE(s) via the direct CWE→ATT&CK cross-walk.

CVEs Like This One

CVE-2024-50649Shared CWE-22
CVE-2023-24416Shared CWE-22
CVE-2024-9935Shared CWE-22
CVE-2025-23084Shared CWE-22
CVE-2025-32631Shared CWE-22
CVE-2025-3486Shared CWE-22
CVE-2025-34508Shared CWE-22
CVE-2026-39844Shared CWE-22
CVE-2025-6265Shared CWE-22
CVE-2023-51646Shared CWE-22

Affected Assets

viglet
shio
≤ 0.3.8

Mitigating Controls

Control response

Prevent
Stop it (NIST 800-53)

—

Detect
Catch it (NIST detect / respond)

—

Harden
Shrink the surface (DISA STIG)

—

Validate
Prove the fix (OWASP ASVS)
  • V5.3.2

Mitigating Controls (NIST 800-53 r5) AI

AC-3 Access Enforcement good match

Enforces the intended directory access authorizations that path traversal would otherwise bypass.

SI-10 Information Input Validation good match

Input validation directly neutralizes special path elements before pathname construction occurs.

AC-6 Least Privilege partial match

Least privilege reduces the impact of any unauthorized file access obtained via traversal.

Mitigating Controls (NIST CSF 2.0) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.

PR.PS-02 partial match
blocks

Patching/maintenance can remediate known path-traversal flaws in deployed software (partial prevention of exploitability) but does nothing to stop the coding defect from being introduced in the first place.

Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI

Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.

A.8.29 Security testing in development and acceptance mostly match
finds

Security testing in development catches path traversal via static/dynamic analysis.

A.8.28 Secure coding partial match
prevents

Secure coding standards explicitly forbid unsafe path construction and mandate safe APIs.

References