CVE-2026-41691: Copilot said: i18nextify is a JavaScript library that adds i18nextify is a JavaScript library that adds websit

Routine

MEDIUM 6.5REMOTEUPGRADE

CVE-2026-41691 is a medium-severity flaw (CVSS 6.5) affecting i18next-http-backend. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Copilot said: i18nextify is a JavaScript library that adds i18nextify is a JavaScript library that adds website internationalization via a script tag, without source code changes. Versions prior to 3.0.5 interpolate the lng and ns values directly into the configured loadPath / addPath URL template without any encoding, validation, or path sanitisation. When an application exposes the language-code selection to user-controlled input (the default —

Why this priority

Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	6.5 (Medium)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.3% (top 76%)
CISA exploited list	No
Weakness	CWE-22, CWE-74
Published	2026-05-07
Last modified	2026-10-26

Publisher (CNA): GitHub, Inc. · Vendor: i18next

Last updated 2026-10-26 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-05-07 21:16 UTCPublished CVE record published
2026-10-26 20:10 UTCUpdated Record last modified

i18next i18next-http-backend UPGRADE

Affected: < 3.0.5

Fixed in: 3.0.5

Safe to downgrade to: no unaffected older release

1. Check installed version

npm ls i18next-http-backend

2. UPGRADE to 3.0.5

npm install i18next-http-backend@">=3.0.5"

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-41691?

i18next-http-backend: upgrade to 3.0.5. Exact commands for each OS are on this page.

Is CVE-2026-41691 being exploited?

CVE-2026-41691 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-41691 affect?

CVE-2026-41691 affects i18next-http-backend. Severity is medium (CVSS 6.5). Copilot said: i18nextify is a JavaScript library that adds i18nextify is a JavaScript library that adds website internationalization via a script tag, without source code changes. Versions prior to 3.0.5 interpolate the lng and ns values di

How urgent is CVE-2026-41691?

Priority 34/100. Remotely exploitable, no login, no user action

References

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