CVE-2026-53668: remix-run react-router Cross-site Scripting
Vulnerability summary
CVE-2026-53668 is a medium (CVSS 6.9) Cross-site Scripting vulnerability in remix-run react-router. EPSS estimates a 0.34% chance of exploitation in the next 30 days, higher than 26.1% of scored vulnerabilities.
Advisory lineage
Upstream 0 · Downstream 0 · Related 1Timeline
- 27-07-2026PublishedVulnerability first disclosed.
- 28-07-2026Last modifiedVulnerability information updated.
Description
React Router is a router for React. In versions 6.30.2 through 6.30.4 and 7.9.6 through 7.12.0, applications that allow open redirects are vulnerable to XSS. An attacker could craft a malicious link that redirects users to an unexpected external site or that exploits an XSS vector.This issue has been fixed in version 7.13.0.
CVSS metrics
5 scores · 5 sources · 1 version- OSV · WolfiEcosystem advisory · calculated6.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
- OSV · NpmEcosystem advisory · calculated6.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
- OSV · ChainguardEcosystem advisory · calculated6.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
- NVDNIST6.9MediumCVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:C/C:H/I:L/A:N
EPSS trend
Probability
0.34%
Chance of exploitation in the next 30 days
Percentile
26%
Versus all other CVEs
30-day change
+0.06 pp
From 0.28% on 20-09-2026
Known exploited
Compare KEV catalogsNot in any of the 3 tracked catalogs.
Public exploits
0 foundNo public exploits indexed.
Weaknesses
CWE · root cause- CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')The product does not neutralize or incorrectly neutralizes user-controllable input before it is placed in output that is used as a web page that is served to other users.
- CWE-601URL Redirection to Untrusted Site ('Open Redirect')The web application accepts a user-controlled input that specifies a link to an external site, and uses that link in a redirect.
Affected systems
Chainguard7 products
- keycloak-26.5All versions (No fix recorded)
- keycloak-26.5-iamguarded-compatAll versions (No fix recorded)
- keycloak-26.6< 26.6.7-r0
- keycloak-26.6-iamguarded-compat< 26.6.7-r0
- keycloak-26.7< 26.7.3-r0
Wolfi4 products
- keycloak-26.5All versions (No fix recorded)
- keycloak-26.5-iamguarded-compatAll versions (No fix recorded)
- keycloak-26.6< 26.6.7-r0
- keycloak-26.6-iamguarded-compat< 26.6.7-r0
Npm2 products
- react-router≥ 7.9.6, < 7.13.0
- react-router-dom≥ 6.30.2, < 6.30.6
Remix-run1 product
- react-router≥ 6.30.2, ≤ 6.30.4 | ≥ 7.9.6, < 7.13.0
Shopify1 product
- react-router≥ 6.30.2, ≤ 6.30.4 | ≥ 7.9.6, < 7.13.0
5 vendors · 15 products
References
10 links- github.com/remix-run/react-router/security/advisories/GHSA-jjmj-jmhj-qwj2X Refsource CONFIRMAdvisoryWEBThird Party Advisory
- github.com/remix-run/react-router/commit/3a5b5ad0e5cf9918c646509563f5c41a89226ff3X Refsource MISCFIXWEBPatch
