CVE-2026-83619

See a problem?
Please try reporting it to the source first.
Source
https://cve.org/CVERecord?id=CVE-2026-83619
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83619.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-83619
Aliases
  • GHSA-x4fp-j954-r2f4
Downstream
Published
2026-09-01T14:51:28.121Z
Modified
2026-09-03T03:48:20.347154462Z
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
xmldom: End-tag Whitespace-Trim Regex ReDoS — quadratic backtracking in the 0.8.x end-tag parser
Details

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.7.0 until 0.8.15, the release-0.8.x parser in lib/sax.js trims captured end-tag names with the unanchored global expression /[ \t\n\r]+$/g. For an end tag containing a long whitespace run followed by a non-whitespace character, the expression retries from each possible starting position and backtracks quadratically before failing its end anchor. DOMParser.parseFromString() reaches the path under default options, allowing a small unauthenticated XML input to stall the Node.js event loop; the 0.9.x and unscoped npm lines do not contain this expression. This issue is fixed in @xmldom/xmldom version 0.8.15.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/83xxx/CVE-2026-83619.json",
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-1333",
        "CWE-400"
    ]
}
References

Affected packages

Git / github.com/xmldom/xmldom

Affected ranges

Type
GIT
Repo
https://github.com/xmldom/xmldom
Events
Introduced
c568938641cc1f121cef5b4df80fcfda1e489b6e
Fixed
3abb0934f5a8a84d83a1f9cde0f2bd04c08b2a09
Fixed
b5b8fb5b579ae1183b34e74b3bc39d7eb50a226a
Database specific
Show details 
{
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0.7.0"
        },
        {
            "fixed": "0.8.15"
        }
    ]
}

Affected versions

0.*
0.7.0
0.7.0+scoped
0.7.0+unscoped
0.7.1
0.7.2
0.7.3
0.8.0
0.8.1
0.8.10
0.8.11
0.8.12
0.8.13
0.8.14
0.8.2
0.8.3
0.8.4
0.8.5
0.8.6
0.8.7
0.8.8
0.8.9
v0.*
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-83619.json"