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

Quick assessment

Affected
CVE-2026-15743
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Perl 模块 Catalyst::Plugin::Static::Simple 0.38 及更早版本存在漏洞，会将响应标记为可公开缓存。 _serve_static 方法始终将 Cache-Control 响应头设置为 “public”，且无法覆盖此设置。该设置会指示代理服务器可以将内容存储在共享缓存中，并可能在其他用户（包括携带 Authorization 头的请求）的后续请求中复用该缓存内容。 尽管文档中指出可将 expires 时间配置为 “0” 以禁用缓存，但该配置被忽略，无法生效。

AI Predicted 5.3 Difficulty: Easy EPSS 0.18% · P8

Possible ATT&CK Techniques 1 AI

T1557 · Adversary-in-the-Middle

Affected Version Matrix 1

VendorProduct Version RangeStatus
None None ≤ 0.38 affected

I. Basic Information for CVE-2026-15743

Vulnerability Information
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Vulnerability Title
Catalyst::Plugin::Static::Simple versions through 0.38 for Perl mark responses as publicly cacheable
Source: CVE Program / CVE List V5
Vulnerability 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.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
通过缓存导致的信息暴露
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- - 0 ~ 0.38 -

II. Public POCs for CVE-2026-15743

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III. Intelligence Information for CVE-2026-15743

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Patches & Fixes for CVE-2026-15743 (1)

Other References for CVE-2026-15743 (1)

IV. Related Vulnerabilities

Same weakness: CWE-524

V. Comments for CVE-2026-15743

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