CVE-2026-15743: Software Security Vulnerability Vulnerability

MODERATE
Advisory Identifier: GHSA-cj6v-gcgr-8wgg
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CVSS 5.7
CWE-524
Published
Advisory Summary

CVE-2026-15743 is a MODERATE (CVSS 5.7) security vulnerability vulnerability (CWE-524: Use of Cache Containing Sensitive Information) affecting Software libraries in the Maven ecosystem. The weakness occurs when the code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere.. Remediation is available in the latest vendor maintenance releases.

CVE-2026-15743 at a Glance

CVE Identifier CVE-2026-15743
GHSA Identifier GHSA-cj6v-gcgr-8wgg
Severity MODERATE
CVSS v3.1 Base Score 5.7
CWE Classification CWE-524: Use of Cache Containing Sensitive Information
Affected Product Software
Package Ecosystem Maven
Published Date
Last Updated

Security Impact

CVSS: 5.7

The security impact metrics below are parsed directly from the CVSS v3.1 vector string (CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N).

Attack Vector Network (AV:N)
Attack Complexity Low (AC:L)
Privileges Required Low (PR:L)
User Interaction Required (UI:R)
Scope Unchanged (S:U)
Confidentiality High (C:H)
Integrity None (I:N)
Availability None (A:N)

How to Fix CVE-2026-15743

To remediate this vulnerability, upgrade all affected Software dependencies to a patched release. Both direct and transitive dependencies should be checked, as frameworks or security libraries may pull in vulnerable versions transitively.

Verify Direct and Transitive Dependencies

Run the following command in your project directory to verify that all resolved dependencies use the patched release: 

mvn dependency:tree

How to Check if You Are Affected

To determine whether your Java application is affected by CVE-2026-15743, inspect your build dependencies using the Maven Dependency Plugin:

mvn dependency:tree

Analyze the terminal output to locate any version of Software in your dependency tree. If any resolved version matches the vulnerable ranges listed in the table below (for example, versions earlier than the patched release), your application is affected.

Note: The mvn dependency:tree command inspects the resolved dependency graph declared in your project's POM files; it does not perform automated security scanning or inspect runtime dynamic classpaths. Always verify runtime container classpaths and shaded JARs.

Technical Details

Vulnerability Mechanism & Technical Analysis

This vulnerability is classified under CWE-524: Use of Cache Containing Sensitive Information, where the code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere. In Software, software state validation or input boundaries are circumvented during processing. Review the official source advisory statement below for specific affected components, classes, and reproduction details.

Source Advisory Statement

Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheable. The _serve_static method always sets the Cache-Control header to "public", with no means of overriding it. This advises proxies that the content may be stored in a shared cache, and may be reused in responses to requests from other users. (This includes requests with an Authorization header.) Configuring the expires time to "0" to disable caching, as documented, is ignored.

References

NVD — CVE-2026-15743 NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-15743
Software Source Repository REPOSITORY
https://github.com/perl-catalyst/Catalyst-Plugin-Static-Simple/pull/3
datatracker.ietf.org/doc/html/rfc9111 WEB
https://datatracker.ietf.org/doc/html/rfc9111
Software Security Information SECURITY
https://security.metacpan.org/patches/C/Catalyst-Plugin-Static-Simple/0.38/CVE-2026-15743-r1.patch
Software Security Information SECURITY
http://www.openwall.com/lists/oss-security/2026/08/20/18

Frequently Asked Questions

What is CVE-2026-15743?
CVE-2026-15743 is a security vulnerability in Software classified as a security vulnerability vulnerability under CWE-524: Use of Cache Containing Sensitive Information.
Which Software versions are affected?
Affected versions include releases prior to current release patches.
What version fixes CVE-2026-15743?
Upgrading to current release patches (or the latest patched release for your respective branch) resolves the vulnerability.
What is the CVSS score of CVE-2026-15743?
CVE-2026-15743 has a CVSS v3.1 base score of 5.7 (MODERATE) with vector string CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N.
What CWE is associated with CVE-2026-15743?
CVE-2026-15743 is classified under CWE-524: Use of Cache Containing Sensitive Information (The code uses a cache that contains sensitive information, but the cache can be read by an actor outside of the intended control sphere.).
How can I check Maven dependencies for CVE-2026-15743?
Run the dependency tree command: 'mvn dependency:tree'. This command lists direct and transitive dependencies in your build configuration so you can verify if a vulnerable version is resolved.
Machine-readable OSV JSON OSV v1.5 Schema
Normalized schema output
View Raw JSON 
{
  "schema_version" : "1.4.0",
  "id" : "GHSA-cj6v-gcgr-8wgg",
  "modified" : "2026-08-28T18:31:22Z",
  "published" : "2026-08-20T21:31:27Z",
  "aliases" : [ "CVE-2026-15743" ],
  "details" : "Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheable.\n\nThe _serve_static method always sets the Cache-Control header to \"public\", with no means of overriding it.  This advises proxies that the content may be stored in a shared cache, and may be reused in responses to requests from other users. (This includes requests with an Authorization header.)\n\nConfiguring the expires time to \"0\" to disable caching, as documented, is ignored.",
  "severity" : [ {
    "type" : "CVSS_V3",
    "score" : "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:N/A:N"
  } ],
  "affected" : [ ],
  "references" : [ {
    "type" : "ADVISORY",
    "url" : "https://nvd.nist.gov/vuln/detail/CVE-2026-15743"
  }, {
    "type" : "WEB",
    "url" : "https://github.com/perl-catalyst/Catalyst-Plugin-Static-Simple/pull/3"
  }, {
    "type" : "WEB",
    "url" : "https://datatracker.ietf.org/doc/html/rfc9111"
  }, {
    "type" : "WEB",
    "url" : "https://security.metacpan.org/patches/C/Catalyst-Plugin-Static-Simple/0.38/CVE-2026-15743-r1.patch"
  }, {
    "type" : "WEB",
    "url" : "http://www.openwall.com/lists/oss-security/2026/08/20/18"
  } ],
  "database_specific" : {
    "cwe_ids" : [ "CWE-524" ],
    "severity" : "MODERATE",
    "github_reviewed" : false,
    "github_reviewed_at" : null,
    "nvd_published_at" : "2026-08-20T19:16:48Z"
  }
}