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CVE-2026-54508— TREK: Blind SSRF via unvalidated redirect-following in Google/Naver list import and Maps URL resolution

Quick assessment

Affected
mauriceboe TREK
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

mauriceboe TREK是mauriceboe组织的一款服务器与网络设备。 mauriceboe TREK 3.1.0之前版本存在服务端请求伪造漏洞，该漏洞源于对URL验证不充分，仅验证初始URL而未在重定向后重新验证，可能允许攻击者利用重定向将服务器请求转发至本地回环、内网或云元数据地址，造成服务端请求伪造。

CVSS 5.3 · Medium EPSS 0.43% · P36

Affected Version Matrix 1

VendorProduct Version RangeStatus
mauriceboe TREK < 3.1.0 affected
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I. Basic Information for CVE-2026-54508

Vulnerability Information
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Vulnerability Title
TREK: Blind SSRF via unvalidated redirect-following in Google/Naver list import and Maps URL resolution
Source: CVE Program / CVE List V5
Vulnerability Description
TREK is a collaborative travel planner. Prior to 3.1.0, TREK validates only the initial URL before native redirect following in importGoogleList() and importNaverList() in server/src/services/placeService.ts and resolveGoogleMapsUrl() in server/src/services/mapsService.ts. The affected sinks call checkSsrf() from server/src/utils/ssrfGuard.ts and then use fetch() with redirect: 'follow' instead of the DNS-pinned safeFetch() path, so a public attacker-controlled URL can redirect the server to loopback, RFC 1918, or cloud metadata addresses without revalidation. An authenticated trip member can reach the list-import routes, and any authenticated user can reach /api/maps/resolve-url, allowing blind GET requests to internal services without response-body reflection. This issue is fixed in version 3.1.0.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N
Source: CVE Program / CVE List V5
Vulnerability Type
服务端请求伪造(SSRF)
Source: CVE Program / CVE List V5
Vulnerability Title
mauriceboe TREK 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
mauriceboe TREK是mauriceboe组织的一款服务器与网络设备。 mauriceboe TREK 3.1.0之前版本存在服务端请求伪造漏洞，该漏洞源于对URL验证不充分，仅验证初始URL而未在重定向后重新验证，可能允许攻击者利用重定向将服务器请求转发至本地回环、内网或云元数据地址，造成服务端请求伪造。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
mauriceboe TREK < 3.1.0 -

II. Public POCs for CVE-2026-54508

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III. Intelligence Information for CVE-2026-54508

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Patches & Fixes for CVE-2026-54508 (1)

Vendor Advisories for CVE-2026-54508 (1)

Other References for CVE-2026-54508 (1)

Same Patch Batch · mauriceboe · 2026-08-20 · 4 CVEs total

CVE-2026-54509 6.5 MEDIUM TREK IDOR: any authenticated user can read another user's journey share token (full journe
CVE-2026-62945 4.3 MEDIUM TREK: Cross-trip reservation title disclosure via file links
CVE-2026-54505 2.0 LOW TREK: Stored cross-user HTML injection via trip title in the Journey suggestion banner

IV. Related Vulnerabilities

Same product: TREK
Same vendor: mauriceboe
Same weakness: CWE-918

V. Comments for CVE-2026-54508

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