CVE catalog

CVE-2026-83606

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.0-beta.9 until 0.9.11, the processing-instruction production in lib/grammar.js lets t

[CVE catalog]

Severity
High · CVSS 8.7CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Published
Updated
Source
[NVD] · [CVE record]
EPSS
0.52% · Oct 25, 2026

xmldom is a pure JavaScript W3C standard-based (XML DOM Level 2 Core) DOMParser and XMLSerializer module. From 0.9.0-beta.9 until 0.9.11, the processing-instruction production in lib/grammar.js lets the greedy S+ separator and lazy Char*? data group repeatedly repartition a long whitespace tail when the required closing ?> is absent. Both parsePI and parseProcessingInstruction apply the expression to the entire remaining source, causing quadratic backtracking during DOMParser.parseFromString() under default options and allowing a small unauthenticated XML input to stall the Node.js event loop. This issue is fixed in @xmldom/xmldom version 0.9.11.

Vulnerable and fixed packages

Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.

DistributionPackageReleaseVersionStatus
Debiannode-xmldomsid0.9.12-1fixed
Debiannode-xmldomforky0.9.12-1fixed
Debiannode-xmldomtrixie0.9.6-1vulnerable
Debiannode-xmldombookworm0.8.6-1vulnerable
Npm@xmldom/xmldomNot reported0.9.11fixed
Ubuntunode-xmldom20.040.1.27+ds-1vulnerable
Ubuntunode-xmldom20.040.1.27+ds-1+deb10u2build0.20.04.1vulnerable
Ubuntunode-xmldom22.040.5.0-1vulnerable
Ubuntunode-xmldom22.040.7.3-1vulnerable
Ubuntunode-xmldom22.040.7.5-1vulnerable
Ubuntunode-xmldom22.040.7.5-1ubuntu0.22.04.1vulnerable
Ubuntunode-xmldom24.040.8.6-1vulnerable
Ubuntunode-xmldom26.040.9.6-1vulnerable
Ubuntunode-xmldom26.040.9.8-1vulnerable
Ubuntunode-xmldom26.040.9.8-2vulnerable

Fixed-version evidence

DistributionPackageTypeReleaseFixed versionUrgencyOriginBugs
Debiannode-xmldomsourcesid0.9.11-1not yet assignedNot reportedNot reported
Debiannode-xmldomsourceforky0.9.11-1not yet assignedNot reportedNot reported
Debiannode-xmldomsourcetrixie(unfixed)not yet assignedNot reportedNot reported
Debiannode-xmldomsourcebookworm(unfixed)not yet assignedNot reportedNot reported
Npm@xmldom/xmldomnpmNot reported0.9.11Not reportedGHSA-G53G-W8RJ-FMG7Not reported

Notes

[trixie] node-xmldom: Minor issue [bookworm] node-xmldom: Minor issue

OpenFactory catalog packages

[Debian 12 (Bookworm)]

  • [node-xmldom]Affected
    Details (2)

    • 0.8.6-1 · all · bookworm

      Affected

      nvd · node-xmldom · debian · bookworm; nvd · node-xmldom · debian · 12

    • 0.8.6-1 · all · bookworm

      Affected

      nvd · node-xmldom · debian · bookworm; nvd · node-xmldom · debian · 12

[Debian 13 (Trixie)]

  • [node-xmldom]Affected
    Details (2)

    • 0.9.6-1 · all · trixie

      Affected

      nvd · node-xmldom · debian · 13

    • 0.9.6-1 · all · trixie

      Affected

      nvd · node-xmldom · debian · 13

Observed:

References

[CERT-Bund public advisories] · [Debian Security Tracker] · [FIRST EPSS] · [GitHub Advisory Database] · [National Vulnerability Database (NVD)] · [OSV Package Vulnerability Database] · [Red Hat security advisories and VEX]