Vulnerability · Published Jul 30, 2026 · Assigned by GitHub_M

CVE-2026-54722dssrf: there a critical security bug with remove_at_symbol_in_string

High 8.7

In plain English

A high-severity security flaw in dssrf-js from HackingRepo. Proof-of-concept exploit code is public. The chance it is exploited in the next 30 days is estimated at 0.6% (higher than 47% of all known vulnerabilities). Fixed versions are available - upgrade the affected package.

Severity (CVSS 4.0)8.7High

Exploit odds (30 days)0.6%top 52.6% of all CVEs

Exploited in the wildNo reportsCISA SSVC: poc

Attack toolingNoneno public tooling known

Official description

DSSRF is a Node.js library that provides a wide range of utilities and advanced SSRF defense checks. Prior to 1.0.4, is_url_safe in src/helpers.ts strips the @ userinfo delimiter with remove_at_symbol_in_string before new URL parses the URL, allowing an attacker-controlled URL to bypass internal-IP validation and cause a client using the original URL to reach an internal service. This issue is fixed in version 1.0.4.

Affected packages & fixed versions

Ecosystem	Package	Fixed in	Advisory
npm	dssrf	1.0.4	GHSA-cg4g-m8jx-vjv2

Affected products (as reported)

Vendor	Product	Versions
HackingRepo	dssrf-js	< 1.0.4

Weakness: CWE-76 · Vector: 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

References

https://github.com/HackingRepo/dssrf-js/security/advisories/GHSA-cg4g-m8jx-vjv2 x_refsource_CONFIRM
https://github.com/HackingRepo/dssrf-js/issues/97 x_refsource_MISC
https://github.com/HackingRepo/dssrf-js/pull/98 x_refsource_MISC
https://github.com/HackingRepo/dssrf-js/commit/9211f91bf532433a1a1b27d946571546a63664b3 x_refsource_MISC