CVE catalog
CVE-2026-73569
fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declaration
- Severity
- High · CVSS 8.7
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/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
- Source
- [NVD] · [CVE record]
- EPSS
- 0.51% · Oct 25, 2026
fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. From 5.9.3 until 5.10.1, src/xmlparser/OrderedObjParser.js processes multiple DOCTYPE declarations within a single XML document and passes each declaration's entities through addInputEntities(). addInputEntities() resets maxTotalExpansions and maxExpandedLength every time it is called, allowing additional DOCTYPE declarations to repeatedly reset the configured entity-expansion limits during one parse operation. A crafted XML document can then cause excessive CPU use, event-loop blocking, memory exhaustion, and process termination. This issue is fixed in version 5.10.1.
Vulnerable and fixed packages
Distribution-reported package versions and fixes. These do not depend on matching against the OpenFactory package catalog.
| Distribution | Package | Release | Version | Status |
|---|---|---|---|---|
| Debian | node-webfont | sid | 11.4.0+dfsg2+~cs35.7.26-22 | vulnerable |
| Debian | node-webfont | forky | 11.4.0+dfsg2+~cs35.7.26-22 | vulnerable |
| Debian | node-webfont | trixie | 11.4.0+dfsg2+~cs35.7.26-13 | vulnerable |
| Debian | node-webfont | bookworm | 11.4.0+dfsg2+~cs35.7.26-7 | not affected |
| Npm | fast-xml-parser | Not reported | 5.10.1 | fixed |
Fixed-version evidence
| Distribution | Package | Type | Release | Fixed version | Urgency | Origin | Bugs |
|---|---|---|---|---|---|---|---|
| Debian | node-webfont | source | sid | (unfixed) | not yet assigned | Not reported | [1147730] |
| Debian | node-webfont | source | forky | (unfixed) | not yet assigned | Not reported | [1147730] |
| Debian | node-webfont | source | trixie | (unfixed) | not yet assigned | Not reported | [1147730] |
| Debian | node-webfont | source | bookworm | Not affected | unimportant | Not reported | [1147730] |
| Npm | fast-xml-parser | npm | Not reported | 5.10.1 | Not reported | GHSA-8R6M-32JQ-JX6Q | Not reported |
Notes
[trixie] node-webfont: Minor issue
OpenFactory catalog packages
[Debian 13 (Trixie)]
- [node-webfont]Affected
Details (2)
11.4.0+dfsg2+~cs35.7.26-13· all · trixieAffected
nvd · node-webfont · debian · 13
11.4.0+dfsg2+~cs35.7.26-13· all · trixieAffected
nvd · node-webfont · debian · 13
[Debian 12 (Bookworm)]
- [node-webfont]Not affected
Details (2)
11.4.0+dfsg2+~cs35.7.26-7· all · bookwormNot affected
nvd · node-webfont · debian · bookworm
11.4.0+dfsg2+~cs35.7.26-7· all · bookwormNot affected
nvd · node-webfont · debian · bookworm
Observed:
References
- [https://github.com/NaturalIntelligence/fast-xml-parser/commit/4e546e03987662de5495d050b5fba26bea65383f]
- [https://github.com/NaturalIntelligence/fast-xml-parser/releases/tag/v5.10.1]
- [https://github.com/NaturalIntelligence/fast-xml-parser/security/advisories/GHSA-8r6m-32jq-jx6q]
- [https://github.com/advisories/GHSA-8r6m-32jq-jx6q]
- [https://nvd.nist.gov/vuln/detail/CVE-2026-73569]
- [https://osv.dev/vulnerability/DEBIAN-CVE-2026-73569]
- [https://security-tracker.debian.org/tracker/CVE-2026-73569]
- [https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-73569.json]
- [https://wid.cert-bund.de/.well-known/csaf/white/2026/wid-sec-w-2026-3448.json]
[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]