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Vulnerabilities

Vulnerability · CVE-2018-11784

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g.

Published Oct 4, 2018 · catalog updated Oct 15, 2026 · When the default servlet

Check this week

CVE-2018-11784 is not in CISA KEV. FIRST estimates a 97.68% chance of exploitation in the next 30 days. Check whether you run When the default servlet.

Gaps on this record

  • The stored product name is a package slug. The name on this page is taken from the title (When the default servlet).
  • No vendor fix or required action is stored. Compare the linked advisory before you change production.
Severity
Medium4.3
Known exploitation
Not in CISA/VulnCheck KEV
EPSS
97.68%
Remediation
Advisory link
Affected products
cpe apache/tomcat · cpe canonical/ubuntu linux · cpe debian/debian linux · cpe netapp/snap creator framework · cpe redhat/enterprise linux desktop

When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

Are you affected?

Enter the version you run. The result uses only the ranges stored on this record.

The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.

  • cpe apache/tomcat9.0.0
  • cpe canonical/ubuntu linux14.04
  • cpe debian/debian linux8.0
  • cpe netapp/snap creator frameworkversion unspecified
  • cpe redhat/enterprise linux desktop7.0

How to fix CVE-2018-11784

What to do

Three questions, each answered from this record only. Confirm the vendor advisory before you patch.

Should you patch?

CVE-2018-11784 is not in CISA KEV. FIRST estimates a 97.68% chance of exploitation in the next 30 days. Check whether you run When the default servlet.

Which versions are affected?

Compare what you have installed with canonical/ubuntu linux 14.04; debian/debian linux 8.0; redhat/enterprise linux desktop 7.0. Compare the installed version with the linked vendor advisory before you change production.

What should an analyst verify?

CWE-601: URL Redirection to Untrusted Site (Open Redirect). EPSS 97.68%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.

Code

The project this record applies to. Exploit listings stay in References.

No public source repository is identified for this product.

Timeline

Detection, updates, and resolution for this record.

  1. Oct 4, 2018 · NIST NVD

    Detected

    When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

  2. Oct 15, 2026 · NIST NVD

    Updated

    When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated to any URI of the attackers choice.

Sources

  • CVE.orgVulnerability recordCVE-2018-11784

    Official CVE identifier

    cve.org
  • FIRST EPSSExploitation probabilityCVE-2018-11784

    30-day exploitation probability 97.7%

    first.org
  • NIST NVDVulnerability recordCVE-2018-11784

    When the default servlet in Apache Tomcat versions 9.0.0.M1 to 9.0.11, 8.5.0 to 8.5.33 and 7.0.23 to 7.0.90 returned a redirect to a directory (e.g. redirecting to '/foo/' when the user requested '/foo') a specially crafted URL could be used to cause the redirect to be generated

    nvd.nist.gov
  • Packet Storm SecurityCited referencehttp://packetstormsecurity.com/files/163456/Apache-Tomcat-9.0.0M1-Open-Redirect.html

    Packet Storm link already published on the finding.

    packetstormsecurity.com

References

Freshness

Last verified in this catalog Oct 16, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.