CVE Tools
Sign in

CVE-2024-45047

Potential mXSS vulnerability due to improper HTML escaping in svelte

Published: Aug 30, 2024Updated: Sep 25, 2024 Sources: CVE List NVD GHSACWE-79
NVD MITRE
5.4CVSSMEDIUM
EPSS Score
0.3%
Top 73.9%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

Description

svelte performance oriented web framework. A potential mXSS vulnerability exists in Svelte for versions up to but not including 4.2.19. Svelte improperly escapes HTML on server-side rendering. The assumption is that attributes will always stay as such, but in some situation the final DOM tree rendered on browsers is different from what Svelte expects on server-side rendering. This may be leveraged to perform XSS attacks, and a type of the XSS is known as mXSS (mutation XSS). More specifically, this can occur when injecting malicious content into an attribute within a `noscript` tag. This issue has been addressed in release version 4.2.19. Users are advised to upgrade. There are no known workarounds for this vulnerability.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:RS:UC:LI:LA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:RUser Interaction
Required
Scope
S:UScope
Unchanged
Impact
C:LConfidentiality
Low
I:LIntegrity
Low
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-79

Affected Products

sveltesveltejs
Library
OSS Libraries / web-framework
sveltenpmOSS Libraries
sveltesvelte
Library
OSS Libraries / web-framework
sveltejsoss-projectOSS Libraries
npmpackage-ecosystemOSS Libraries
svelteoss-projectOSS Librariesaka kit, sveltekit

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available

MITRE ATT&CK

2 techniques
Execution
Initial Access
View detailed technique mapping

References

https://github.com/sveltejs/svelte/security/advisories/GHSA-8266-84wp-wv5c
github.com
https://nvd.nist.gov/vuln/detail/CVE-2024-45047
nvd.nist.gov
https://github.com/sveltejs/svelte/commit/83e96e044deb5ecbae2af361ae9e31d3e1ac43a3
github.com
and 1 more references View all →

Timeline

Published
Aug 30, 2024
Last Updated
Sep 25, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2024-45047 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows