CVE-2026-41693Network attack vector

File read and overwrite via unsafe path interpolation

Published May 8, 2026 · Updated May 8, 2026

Path traversal in i18next-fs-backend before 2.6.4 allows remote attackers to read or overwrite host files via crafted lng or ns values. loadPath and addPath interpolate unvalidated identifiers into filesystem paths, allowing separators or .. to escape the locale directory. Reachability requires an application to derive lng or ns from untrusted input; overwrite additionally requires the create path with saveMissing enabled.

CVSS severity8.2
High
EPSS probability0.29%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path traversal in i18next-fs-backend before 2.6.4 allows remote attackers to read or overwrite host files via crafted lng or ns values. loadPath and addPath interpolate unvalidated identifiers into filesystem paths, allowing separators or .. to escape the locale directory. Reachability requires an application to derive lng or ns from untrusted input; overwrite additionally requires the create path with saveMissing enabled.

The record

CVE
CVE-2026-41693
Published
May 8, 2026
Updated
May 8, 2026
Vendor
i18next
Product
i18next-fs-backend
Classifications
CWE-73, CWE-22, CAPEC-126, T1565.001, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. May 8, 2026CVE publishedPublication date reported by the CVE source.
  2. May 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=< 2.6.4

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

i18next · i18next-fs-backendversion=< 2.6.4

Published CVSS scores

8.2GitHub, Inc.CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
CWE-22Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')
CAPEC-126Path Traversal
T1565.001Stored Data Manipulation
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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