CVE-2020-15242: vercel next.js Open Redirect
Vulnerability summary
CVE-2020-15242 is a medium (CVSS 6.1) Open Redirect vulnerability in vercel next.js. EPSS estimates a 0.77% chance of exploitation in the next 30 days, higher than 54.9% of scored vulnerabilities.
Timeline
- 08-10-2020PublishedVulnerability first disclosed.
- 04-08-2024Last modifiedVulnerability information updated.
Description
Next.js versions >=9.5.0 and <9.5.4 are vulnerable to an Open Redirect. Specially encoded paths could be used with the trailing slash redirect to allow an open redirect to occur to an external site. In general, this redirect does not directly harm users although can allow for phishing attacks by redirecting to an attackers domain from a trusted domain. The issue is fixed in version 9.5.4.
CVSS metrics
4 scores · 3 sources · 2 versions- CVE.orgCNA4.7MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:NDiffers
- OSV · NpmEcosystem advisory · calculated4.7MediumCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:N/A:NDiffers
EPSS trend
Probability
0.77%
Chance of exploitation in the next 30 days
Percentile
55%
Versus all other CVEs
30-day change
0.00 pp
From 0.77% 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 causeAffected systems
Npm1 product
- next≥ 9.5.0, < 9.5.4
Vercel1 product
- next.js≥ 9.5.0, < 9.5.4
2 vendors · 2 products
References
4 links- github.com/vercel/next.js/security/advisories/GHSA-x56p-c8cg-q435X Refsource CONFIRMWEBPatchThird Party Advisory
- github.com/vercel/next.jsPACKAGE