PT-2026-84252 · Npm · Xmldom
CVE-2026-83606
·
Published
2026-08-12
·
Updated
2026-09-08
CVSS v4.0
8.7
High
| Vector | AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N |
Name of the Vulnerable Software and Affected Versions
xmldom versions 0.9.0-beta.9 through 0.9.10
Description
The processing-instruction production in
lib/grammar.js allows a greedy S+ separator and lazy Char*? data group to repeatedly repartition a long whitespace tail when the closing ?> is missing. The functions parsePI() and parseProcessingInstruction() apply this expression to the remaining source, leading to quadratic backtracking during DOMParser.parseFromString() under default options. This allows an unauthenticated XML input to stall the Node.js event loop.Recommendations
Update to version 0.9.11.
Exploit
Fix
DoS
Resource Exhaustion
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Related Identifiers
Affected Products
Xmldom