CVE-2025-13810Public exploitNetwork attack vector

Unauthenticated file read via unsanitized pictureId

Published Dec 1, 2025 · Updated Feb 24, 2026

Path traversal in jsnjfz WebStack-Guns 1.0 allows remote attackers to read server-accessible files via a crafted pictureId. The public /kaptcha/{pictureId} route passes the path variable to renderPicture, which concatenates it with the upload directory without validation or canonicalization before FileUtil reads and streams the resolved file. No authentication or user interaction is required, and disclosure is limited to files readable by the application service account.

CVSS severity7.5
High
EPSS probability1.00%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in jsnjfz WebStack-Guns 1.0 allows remote attackers to read server-accessible files via a crafted pictureId. The public /kaptcha/{pictureId} route passes the path variable to renderPicture, which concatenates it with the upload directory without validation or canonicalization before FileUtil reads and streams the resolved file. No authentication or user interaction is required, and disclosure is limited to files readable by the application service account.

The record

CVE
CVE-2025-13810
Published
Dec 1, 2025
Updated
Feb 24, 2026
Vendor
jsnjfz
Product
WebStack-Guns
Classifications
CWE-22, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 1, 2025CVE publishedPublication date reported by the CVE source.
  2. Feb 24, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=1.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

jsnjfz · WebStack-Gunsversion=1.0

Published CVSS scores

5.0VulDBAV:N/AC:L/Au:N/C:P/I:N/A:N
5.5VulDBCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N/E:P
5.3VulDBCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
7.5NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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