🛡️ CVE-2026-25896 on npm (Root.io) — fast-xml-parser

🔴 CVSS 9.5 — Critical ✅ No Known Exploit OSV

9.5

CVSS Score

0 Low4 Medium7 High9 Critical10

Description

CVE-2026-25896 in @rootio/fast-xml-parser - Patched by Root

Root has patched CVE-2026-25896 in the @rootio/fast-xml-parser package for Root:npm. Multiple fixed versions available.

Distribution advisory

This page covers CVE-2026-25896 as tracked by npm (Root.io), for the package fast-xml-parser. The fix is available in version 4.5.4-root.io.1; earlier versions remain affected.

How this vulnerability can be exploited

This issue can be reached over the network, attack complexity is low, an attacker needs no privileges on the target. No user interaction is required. The scope is changed, meaning a successful attack can affect components beyond the vulnerable one. Rated impact: confidentiality low, integrity high, availability none.

Weakness class

ROOT-APP-NPM-CVE-2026-25896 is classified as CWE-185: Incorrect Regular Expression. The product specifies a regular expression in a way that causes data to be improperly matched or compared.

Affected software

ROOT-APP-NPM-CVE-2026-25896 is recorded against 2 packages.

@rootio/fast-xml-parser (fixed in 4.5.4-root.io.1)
fast-xml-parser (fixed in 4.5.4-aikido.1)

Timeline and source

Published on 30 June 2026. No public exploit is currently recorded for this entry. Record sourced from OSV.

CVE-2026-25896 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Base record Debian Ubuntu

Details

Severity CRITICAL

CVSS Score 9.5

CVSS Vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

CWE N/A

Public Exploit ✅ No

Source OSV

Published 2026-06-30

Updated 2026-08-12

Modified 2026-06-30

Fix URL N/A

Affected Packages

Software	From version	Fixed in
@rootio/fast-xml-parser	—	4.5.4-root.io.1
fast-xml-parser	—	4.5.4-aikido.1

References

N/A

🔗 NVD 🔗 Mitre

Similar Threats

Exploit Protection

Are you running fast-xml-parser?

ROOT-APP-NPM-CVE-2026-25896 carries CVSS 9.5 Critical rating. BotEraser checks your installation against this and other known CVE records, and blocks IPs associated with exploit activity.

Check My Site For ROOT-APP-NPM-CVE-2026-25896 →

No credit card required · Results in minutes

ⓘ Data Notice: The information presented above has been compiled from publicly available internet sources. Boteraser aggregates this data solely for informational purposes and does not independently classify, evaluate, or endorse any findings about the vulnerabilities listed. The accuracy and completeness of this information is the sole responsibility of the original publishers. Boteraser and its operators accept no liability for any decisions made based on this data.