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Vulnerability record · CVE-2013-4390 · published 24 October 2013

CVE-2013-4390: Apache sling improper input validation vulnerability

Apache · Sling

Open redirect vulnerability in the AbstractAuthenticationFormServlet in the Auth Core (org.apache.sling.auth.core) bundle before 1.1.4 in Apache Sling allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the resource parameter, related to "a custom login form and XSS."

5.8 CVSS 2.0 Medium EPSS 3.1% · top 12.9% CWE-20 · Improper input validation
5.8CVSS 2.0 base score
3.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
8References
16 Jun 2026Last modified by NVD

Description

Open redirect vulnerability in the AbstractAuthenticationFormServlet in the Auth Core (org.apache.sling.auth.core) bundle before 1.1.4 in Apache Sling allows remote attackers to redirect users to arbitrary web sites and conduct phishing attacks via a URL in the resource parameter, related to "a custom login form and XSS."

AV:N/AC:M/Au:N/C:P/I:P/A:N

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://mail-archives.apache.org/mod_mbox/sling-dev/201310.mbox/%3CCAKkCf4qdFxEW9NXBJoMsrBama8LFNyir%2B61A0Vfzp4njEpeU%3D Vendor Advisory
http://secunia.com/advisories/55249 Vendor Advisory
http://www.securityfocus.com/bid/63241
https://issues.apache.org/jira/browse/SLING-3141
http://mail-archives.apache.org/mod_mbox/sling-dev/201310.mbox/%3CCAKkCf4qdFxEW9NXBJoMsrBama8LFNyir%2B61A0Vfzp4njEpeU%3D Vendor Advisory
http://secunia.com/advisories/55249 Vendor Advisory
http://www.securityfocus.com/bid/63241
https://issues.apache.org/jira/browse/SLING-3141

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2013-4390), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.