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MEDIUM severity

CVE-2024-6783 — vue-template-compiler

MEDIUM

CVE-2024-6783 is a medium-severity (CVSS 4.2) Cross-site Scripting (XSS) vulnerability in vue-template-compiler. The records list no fixed version yet; check the vendor advisory below and apply the mitigations in the meantime.

vue-template-compiler vulnerable to client-side Cross-Site Scripting (XSS)

Published
Updated
Affected
1 pkg
Patched
None yet
Exploits
None indexed
Exploitation data as of Nov 10, 2026 · OSV.dev, NVD, FIRST.org (EPSS)

Exploitation Status

Proof-of-concept exploit code exists

  • CISA’s SSVC triage found public proof-of-concept exploit code for this CVE, though no confirmed active exploitation.

Exploitation and automatability from CISA’s SSVC triage for CVE-2024-6783.

EPSS Exploitation Probability

via FIRST.org ↗
0.5%probability of exploitation in next 30 days
Lower Risk0.00%
Lower risk than most CVEs44th percentile — riskier than 44% of all scored CVEsHighest risk
0.00%0.34%0.67%1.01%0.3%0.5%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.

4Kother npm packages depend on this — each one inherits the vulnerability until it's patched upstream
vue-template-compilernpm
2.6Mdownloads / week

Description

A vulnerability has been discovered in vue-template-compiler, that allows an attacker to perform XSS via prototype pollution. The attacker could change the prototype chain of some properties such as Object.prototype.staticClass or Object.prototype.staticStyle to execute arbitrary JavaScript code. Vue 2 has reached End-of-Life. This vulnerability has been patched in Vue 3.

Affected Packages

1 total
EcosystemPackageVulnerable rangeFix
📦npmvue-template-compiler≥ 2.0.0No fix

Detection & mitigation playbook

Open-source dependency

  1. Detect

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

  2. Remediation status

    The records we use list no patched version of vue-template-compiler for CVE-2024-6783. Check the maintainer's advisory, and where your build allows, override or pin the dependency away from the vulnerable range.

  3. Mitigate without a patch

    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

A vulnerability has been discovered in vue-template-compiler, that allows an attacker to perform XSS via prototype pollution. The attacker could change the prototype chain of some properties such as `Object.prototype.staticClass` or `Object.prototype.staticStyle` to execute arbitrary JavaScript code. Vue 2 has reached End-of-Life. This vulnerability has been patched in Vue 3.
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CVE-2024-6783: vue-template-compiler XSS (Medium 4.2)