CVE-2025-59140

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Source
https://cve.org/CVERecord?id=CVE-2025-59140
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59140.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2025-59140
Aliases
Published
2025-09-15T19:09:53Z
Modified
2026-10-28T02:31:03Z
Severity
  • 8.8 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:H/VA:N/SC:N/SI:N/SA:N/E:A/U:Red CVSS Calculator
Summary
backslash@0.2.1 contains malware after npm account takeover
Details

backlash parses collected strings with escapes. On 8 September 2025, the npm publishing account for backslash was taken over after a phishing attack. Version 0.2.1 was published, functionally identical to the previous patch version, but with a malware payload added attempting to redirect cryptocurrency transactions to the attacker's own addresses from within browser environments. Local environments, server environments, command line applications, etc. are not affected. If the package was used in a browser context (e.g. a direct

Database specific 
{
    "cna_assigner":  "GitHub_M",
    "cwe_ids":  [
        "CWE-506"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/59xxx/CVE-2025-59140.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "range":  [
                        {
                            "introduced":  "= 0.2.1"
                        },
                        {
                            "last_affected":  "= 0.2.1"
                        }
                    ],
                    "source":  "AFFECTED_FIELD",
                    "strategy":  "StandaloneSingleVersion"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/qix-/node-backslash

Affected ranges

Type
GIT
Repo
https://github.com/qix-/node-backslash
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
628aa56807b7ed3639f752b3ed1c7899ebc4ec85
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "0"
                },
                {
                    "fixed":  "0.2.2"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}

Affected versions

0.*
0.2.0
v0.*
v0.1.0
v0.1.1
v0.1.2
v0.1.3
v0.1.4
v0.1.5
v0.1.6
v0.1.7

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-59140.json"