Description
fast-xml-parser allows users to process XML from JS object without C/C++ based libraries or callbacks. Prior to version 5.7.0, XMLBuilder does not escape the "-->" sequence in comment content or the "]]>" sequence in CDATA sections when building XML from JavaScript objects. This allows XML injection when user-controlled data flows into comments or CDATA elements, leading to XSS, SOAP injection, or data manipulation. This issue has been patched in version 5.7.0.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| NaturalIntelligence | fast-xml-parser | < 5.7.0 | — |
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Debian
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Debian 14 | node-webfont | No fix yet | — |
| Debian 13 | node-webfont | No fix yet | — |
| Debian 12 | node-webfont | No fix yet | — |
Ubuntu
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Ubuntu 26.10 | node-webfont | No fix yet | — |
| Ubuntu 26.04 LTS | node-webfont | No fix yet | — |
| Ubuntu 25.10 | node-webfont | No fix yet | — |
| Ubuntu 24.04 LTS | node-webfont | No fix yet | — |
openSUSE
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| openSUSE Tumbleweed | velociraptor | 0.76.7.0.git145.b60ef1146-1.1 | openSUSE-SU-2026:12070-1 |
Wolfi
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Wolfi rolling | kubeflow-pipelines-frontend | 2.16.0-r19 | — |
| Wolfi rolling | langfuse-3 +1 | 3.164.0-r8 | — |
| Wolfi rolling | opensearch-dashboards-3 | 3.6.0-r3 | — |
| Wolfi rolling | prism | 5.15.10-r0 | — |
| Wolfi rolling | renovate | 43.170.15-r1 | — |
| Wolfi rolling | saf | 1.6.0-r0 | — |
| Wolfi rolling | tileserver-gl | 5.6.0-r2 | — |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| npm | fast-xml-parser | < 5.7.0 | 5.7.0 | GHSA-gh4j-gqv2-49f6 |
Advisories 2
- openSUSE-SU-2026:12070-1 velociraptor-0.76.7.0.git145.b60ef1146-1.1 on GA media SUSE / openSUSE Security Updates · Oct 7, 2026
- WID-SEC-2026-1654 IBM App Connect Enterprise: Mehrere Schwachstellen BSI CERT-Bund (WID) · Jun 28, 2026