Vulnerability GHSA-29g2-3rmr-qm68
Medium Risk
MEDIUM RISK
CVSS Score: 5.3
Score Range: 4.0–6.9
Medium severity vulnerabilities (CVSS 4.0–6.9). Important issues that meaningfully reduce security confidence.
3 months ago
August 07, 2026 at 04:50 PM UTC
SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header
<2.70.2
<2.70.2
Summary
SvelteKit: ReDoS (O(n^2)) in content negotiation — unauthenticated DoS via the Accept header
Details
Impact
SvelteKit is vulnerable to remote CPU-exhaustion DoS attacks via specifically-crafted Accept headers. The impact is mitigated by default header length limits on most platforms, but in the case of raised or absent limits a denial of service is possible.
Patches
The vulnerability is patched in @sveltejs/kit version 2.70.2.
Related Vulnerabilities
Other vulnerabilities affecting the same packages
Medium Risk
21 days ago
SvelteKit: URL redirection to untrusted site via enhanced form submission
<3.0.0 GHSA-pfhg-q3qv-9q6r
<3.0.0 GHSA-pfhg-q3qv-9q6r
Low Risk
21 days ago
SvelteKit : XSS via untrusted cache-control header in prerendered page
<3.0.0 GHSA-27mw-82g8-phjj
<3.0.0 GHSA-27mw-82g8-phjj
Medium Risk
3 months ago
SvelteKit: Prototype pollution in file input deletion path in remote-function forms
<2.69.1 GHSA-866w-xmhq-wj7x
<2.69.1 GHSA-866w-xmhq-wj7x
Medium Risk
3 months ago
SvelteKit: Big remote form function payloads can cause Node process to crash
<2.69.1 GHSA-wqjv-9729-c5q2
<2.69.1 GHSA-wqjv-9729-c5q2
Medium Risk
5 months ago
@sveltejs/kit: `query.batch` cross-talk
>=2.38.0 <2.60.1 GHSA-hgv7-v322-mmgr
>=2.38.0 <2.60.1 GHSA-hgv7-v322-mmgr
Impacted packages
Timeline
Published
3 months ago
August 07, 2026 at 04:50 PM UTC
Fixed (2.70.2)
3 months ago
July 29, 2026 at 10:58 PM UTC
Last Modified
3 months ago
August 07, 2026 at 05:10 PM UTC