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HIGH severity

CVE-2024-43370 — gettext.js

HIGHFix: guillaumepotier/gettext.js@8150aeb

CVE-2024-43370 is a high-severity (CVSS 7.2) Cross-site Scripting (XSS) vulnerability in gettext.js. A fix is available for gettext.js — see the affected versions and patch details below.

gettext.js vulnerable to cross-site scripting (XSS)

Also known asGHSA-vwhg-jwr4-vxgg
Published
Updated
Affected
1 pkg
Patched
1 / 1
Exploits
None indexed
Exploitation data as of Nov 6, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

No confirmed exploitation observed yet

  • CISA’s own triage has not observed active exploitation or public proof-of-concept code for this CVE as of its last assessment.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-43370.

EPSS Exploitation Probability

via FIRST.org ↗
0.4%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs32th percentile — riskier than 32% of all scored CVEsHighest risk
0.00%0.31%0.61%0.92%0.4%0.4%May 26Sep 26Nov 26

Probability of exploitation in the next 30 days, from FIRST.org EPSS.

How urgent is this, really

Where this sits among everything scored

Real-World Exposure

1 pkg affected

How broadly this vulnerability is actually deployed: weekly install volume shows current usage, and reverse-dependency count shows how many other packages break if it stays unpatched.

11other npm packages depend on this — each one inherits the vulnerability until it's patched upstream
gettext.jsnpm
11Kdownloads / week

Description

gettext.js is a GNU gettext port for node and the browser. There is a cross-site scripting (XSS) injection if .po dictionary definition files are corrupted. This vulnerability has been patched in version 2.0.3. As a workaround, control the origin of the definition catalog to prevent the use of this flaw in the definition of plural forms.

Affected Packages

1 total 1 fixed
EcosystemPackageVulnerable rangeFix
📦npmgettext.jsall versions2.0.3npm install gettext.js@2.0.3

Detection & mitigation playbook

Open-source dependency

  1. Detect

    Scan your dependency tree (package-lock.json, pnpm-lock.yaml, requirements.txt, go.sum, etc.) for gettext.js, including transitive dependencies — a direct dependency you never call can still pull in a vulnerable version.

  2. Fix

    Update gettext.js to 2.0.3 or later, then make sure no transitive (indirect) dependency still pins the vulnerable range — O3 confirms CVE-2024-43370 is resolved across your whole dependency graph.

  3. Workarounds

    Escape or sanitise the affected output on the server side rather than relying on client-side filtering, and add a Content-Security-Policy that blocks inline script execution so injected markup cannot run even if it reaches the page.

Frequently Asked Questions

gettext.js is a GNU gettext port for node and the browser. There is a cross-site scripting (XSS) injection if `.po` dictionary definition files are corrupted. This vulnerability has been patched in version 2.0.3. As a workaround, control the origin of the definition catalog to prevent the use of this flaw in the definition of plural forms.
O3 Security · Impact-Aware SCA

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CVE-2024-43370: gettext.js XSS — Fixed in 2.0.3