CVE-2026-93749

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Source
https://cve.org/CVERecord?id=CVE-2026-93749
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93749.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-93749
Downstream
Published
2026-09-18T17:51:34Z
Modified
2026-09-19T03:47:34Z
Severity
  • 8.7 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
source-map-js through 1.2.1 Event Loop Denial of Service
Details

source-map-js through 1.2.1 fails to validate the per-section offset line value in indexed source maps, allowing attackers to specify arbitrary numeric values. Attackers can supply extremely large offset line values that cause synchronous event loop blocking for extended periods, preventing the service from handling other requests.

Database specific 
{
    "cna_assigner": "VulnCheck",
    "cwe_ids": [
        "CWE-1284"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/93xxx/CVE-2026-93749.json"
}
References

Affected packages

Git / github.com/7rulnik/source-map-js

Affected ranges

Type
GIT
Repo
https://github.com/7rulnik/source-map-js
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last Affected
428d49f6b1e1614f082b7706fa879a3d9c64f728
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "1.2.1"
        }
    ],
    "source": "AFFECTED_FIELD"
}

Affected versions

0.*
0.1.0
0.1.1
0.1.20
0.1.21
0.1.22
0.1.23
0.1.24
0.1.25
0.1.26
0.1.27
0.1.28
0.1.29
0.1.30
0.1.31
0.1.32
0.1.33
0.1.34
0.1.35
0.1.36
0.1.37
0.1.38
0.1.39
0.1.40
0.1.41
0.1.42
0.1.43
0.2.0
0.3.0
0.4.0
0.4.1
0.4.2
0.4.3
0.4.4
0.5.0
0.5.1
0.5.2
0.5.3
0.5.4
0.5.5
0.5.6
0.5.7
0.6.0
0.6.1
0.6.2-beta.0
v0.*
v0.6.2
v1.*
v1.0.0
v1.0.1
v1.0.2
v1.0.3
v1.1.0
v1.2.0
v1.2.1

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-93749.json"