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CVE-2026-54729— dssrf: any users using 1.1.1.1 DNS is impacted by SSRF

Quick assessment

Affected
HackingRepo dssrf-js
Exploitation
Public or AI PoC available; prioritize validation
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

RelunSec dssrf是RelunSec个人开发者的一款服务端请求伪造检测工具。 RelunSec dssrf 1.0.5之前版本存在服务端请求伪造漏洞，该漏洞源于DNS解析器1.1.1.1返回NXDOMAIN时，dns.resolve4不产生地址且不进行dns.lookup回退，is_url_safe可能将localhost视为安全，从而导致服务端请求伪造。

CVSS 8.7 · High EPSS 0.48% · P39

Possible ATT&CK Techniques 1 AI

T1571.002

Affected Version Matrix 1

VendorProduct Version RangeStatus
HackingRepo dssrf-js < 1.0.5 affected
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I. Basic Information for CVE-2026-54729

Vulnerability Information
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Vulnerability Title
dssrf: any users using 1.1.1.1 DNS is impacted by SSRF
Source: CVE Program / CVE List V5
Vulnerability Description
DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.5, is_url_safe can treat localhost as safe when DNS resolver 1.1.1.1 returns NXDOMAIN because dns.resolve4 yields no address and no dns.lookup fallback occurs, allowing server-side request forgery. This issue is fixed in version 1.0.5.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/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
RelunSec dssrf 服务端请求伪造漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
RelunSec dssrf是RelunSec个人开发者的一款服务端请求伪造检测工具。 RelunSec dssrf 1.0.5之前版本存在服务端请求伪造漏洞，该漏洞源于DNS解析器1.1.1.1返回NXDOMAIN时，dns.resolve4不产生地址且不进行dns.lookup回退，is_url_safe可能将localhost视为安全，从而导致服务端请求伪造。
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
HackingRepo dssrf-js < 1.0.5 -

II. Public POCs for CVE-2026-54729

# POC Description Source Link Shenlong Link
AI-Generated POC Premium
Qwen3.6-35B-A3B · 10154 chars
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Vulnerability reproduction recording (real sandbox build + trigger, exclusive)
In-depth vulnerability mechanism
Trigger conditions & impact
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POC zip download
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III. Intelligence Information for CVE-2026-54729

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Patches & Fixes for CVE-2026-54729 (2)

Vendor Advisories for CVE-2026-54729 (1)

IV. Related Vulnerabilities

Same product: dssrf-js
Same vendor: HackingRepo
Same weakness: CWE-918

V. Comments for CVE-2026-54729

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