Medium · CVSS 5.7CVE-2026-15743

Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheableCVE-2026-15743

Answer in brief

CVE-2026-15743 records a Medium severity (CVSS 5.7) vulnerability in Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheable. The current sources do not mark it as known exploited. The current feed maps Catalyst-Plugin-Static-Simple (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Aug 20, 2026Updated Aug 28, 2026Source checked Oct 6, 2026First seen by HOL Aug 20, 2026Material review Aug 28, 2026

Upstream Advisory

Key facts

Risk: Medium · CVSS 5.7
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

CVSS is 5.7. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps Catalyst-Plugin-Static-Simple (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
Catalyst-Plugin-Static-Simplegeneric	>=0 <=0.38	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Catalyst-Plugin-Static-Simple.
Review the reported fix. Source-reported workaround: Apply the patch, and configure the default Cache-Control as needed. For deployments that cannot apply the patch, a method modifier of _serve_static in the Catalyst class can be used to override the Cache-Control or Expires headers as needed, for example: around _serve_static => sub { my ( $next, $c, $path, $cache_control ) = @_; $c->$next($path); my $config = $c->config->{'Plugin::Static::Simple'}; $cache_control ||= $config->{cache_control} || "public"; if ( defined $config->{expires} ) { if ( $config->{expires} <= 0 ) { $cache_control = 'no-store'; $c->res->headers->expires(0); } else { $c->res->headers->expires( time() + $config->{expires} ); } } $c->res->headers->header( 'Cache-Control' => $cache_control ); return 1; };

Evidence timeline and material changes

Published upstream
Aug 20, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Aug 28, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Aug 20, 2026

Sources and claim methodology

Upstream source description

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.

Quoted source text, attributed separately from HOL analysis.

Package

Affected range

Fixed version

Catalyst-Plugin-Static-Simplegeneric

>=0 <=0.38

Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for Catalyst-Plugin-Static-Simple.

Review the reported fix. Source-reported workaround: Apply the patch, and configure the default Cache-Control as needed. For deployments that cannot apply the patch, a method modifier of _serve_static in the Catalyst class can be used to override the Cache-Control or Expires headers as needed, for example: around _serve_static => sub { my ( $next, $c, $path, $cache_control ) = @_; $c->$next($path); my $config = $c->config->{'Plugin::Static::Simple'}; $cache_control ||= $config->{cache_control} || "public"; if ( defined $config->{expires} ) { if ( $config->{expires} <= 0 ) { $cache_control = 'no-store'; $c->res->headers->expires(0); } else { $c->res->headers->expires( time() + $config->{expires} ); } } $c->res->headers->header( 'Cache-Control' => $cache_control ); return 1; };

Sources and claim methodology

Upstream source description

Quoted source text, attributed separately from HOL analysis.

Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheableCVE-2026-15743

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs

Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheableCVE-2026-15743

Key facts

Why this deserves its current priority

Affected scope and exposure questions

Recommended response

Evidence timeline and material changes

Sources and claim methodology

Related CVEs