Goal Reached Thanks to every supporter — we hit 100%!

Goal: 1000 CNY · Raised: 1336 CNY

100%
Buy Us a Coffee

CVE-2026-93748— http-cache-semantics through 4.2.0 Cross-User Cache Disclosure via max-stale

Quick assessment

Affected
kornelski http-cache-semantics
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.

http-cache-semantics 库在 4.2.0 及之前版本中，在处理客户端发送的 指令时，未能正确验证已被安全清零（security-zeroed）的缓存条目。这允许未经身份验证的攻击者检索属于其他用户的缓存响应。具体而言，攻击者可以通过请求相同的 URL 并设置一个较大的 值，从那些出于安全原因被故意清零的共享缓存条目中，获取其他用户的 会话凭据。

CVSS 7.5 · High EPSS 0.40% · P34

Possible ATT&CK Techniques 1 AI

T1210 · Exploitation of Remote Services

Affected Version Matrix 1

VendorProduct Version RangeStatus
kornelski http-cache-semantics ≤ 4.2.0 affected
Get alerts for future matching vulnerabilities Log in to subscribe

I. Basic Information for CVE-2026-93748

Vulnerability Information
Have questions about the vulnerability? See if Shenlong's analysis helps!
View Shenlong Deep Dive ↗

Although we use advanced large model technology, its output may still contain inaccurate or outdated information.Shenlong tries to ensure data accuracy, but please verify and judge based on the actual situation.

Vulnerability Title
http-cache-semantics through 4.2.0 Cross-User Cache Disclosure via max-stale
Source: CVE Program / CVE List V5
Vulnerability Description
http-cache-semantics through 4.2.0 fails to properly validate security-zeroed cache entries when processing client max-stale directives, allowing unauthenticated attackers to retrieve cached responses belonging to other users. Attackers can request the same URL with a large max-stale value to obtain another user's Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
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
kornelski http-cache-semantics 0 ~ 4.2.0 -

II. Public POCs for CVE-2026-93748

# POC Description Source Link Shenlong Link
AI-Generated POC Premium

No public POC found.

Login to generate AI POC

III. Intelligence Information for CVE-2026-93748

请登录查看更多情报信息。

Other References for CVE-2026-93748 (2)

IV. Related Vulnerabilities

Same product: http-cache-semantics
Same vendor: kornelski
Same weakness: CWE-524

V. Comments for CVE-2026-93748

No comments yet

Leave a comment