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Fencer Vulns
high 7.2

CVE-2026-118257 json

Vue I18n: escapeParameter does not prevent XSS through srcdoc in translation messages

published 2026-10-28 11 d ago modified 2026-10-29 10 d ago also GHSA-83rm-6c8r-g728 , EUVD-2026-112359

cvss
7.2
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
0.3%
EPSS 0.3% chance of exploitation in 30 days, percentile 19%
public exploits
0
none known

Summary

Vue I18n is the internationalization plugin for Vue.js. From 11.1.10 until 11.4.14 and from 12.0.0-alpha.4 until 12.0.0-alpha.5, sanitizeTranslatedHtml() escapes markup and event-handler text inside an iframe srcdoc value but leaves the srcdoc attribute active. Browsers decode the character references and parse the value as a same-origin nested HTML document, allowing attacker-controlled parameters or translation content placed in srcdoc to execute script when applications enable escapeParameter and render translations as HTML through v-html. Versions 9.14.5 and 10.0.8 are also affected and are no longer supported, while i18n-t rendering is not affected. This issue is fixed in versions 11.4.14 and 12.0.0-alpha.5.

Patch / fix

  • npm vue-i18n 11.4.14, 12.0.0-alpha.5
  • npm petite-vue-i18n 11.4.14, 12.0.0-alpha.5
  • npm @intlify/core-base 11.4.14, 12.0.0-alpha.5
  • npm @intlify/core 11.4.14, 12.0.0-alpha.5
  • npm @intlify/vue-i18n-core 11.4.14, 12.0.0-alpha.5
  • npm @intlify/shared 11.4.14, 12.0.0-alpha.5

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2026-118257 updated cvss 6.1

vue-i18n: core-base: vue-i18n: Cross-Site Scripting via improper iframe srcdoc sanitization

  • Red Hat OpenShift API for Data Protection oadp/oadp-vmfr-access-filebrowser-rhel9
    not affected: vulnerable code not present

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation
none
Automatable
yes
Technical impact
partial
Assessed
10 d ago

Exploit prediction

0.27% chance of exploitation in the next 30 days, higher than 19% of all scored CVEs (FIRST EPSS, 2026-11-08).

CVSS scores

assigned by version score vector
CNA 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N
GitHub 3.1 7.2 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected packages

ecosystem package affected fixed in
npm vue-i18n
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5
npm petite-vue-i18n
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5
npm @intlify/core-base
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5
npm @intlify/core
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5
npm @intlify/vue-i18n-core
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5
npm @intlify/shared
1 listed version
>=11.1.10, <11.4.14
>=12.0.0-alpha.4, <12.0.0-alpha.5
11.4.14
12.0.0-alpha.5

Affected products

  • intlify vue-i18n

Classification

Weakness
  • CWE-79 Improper Neutralization of Input During Web Page Generation
  • CWE-116 Improper Encoding or Escaping of Output

References

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.