CVE-2026-93748Disclosure

LOWCVSS 8.7 · HIGH

Signal is active with 1 mentions in latest observed window

Immediate actions

Track advisory updates for patch or workaround availability

Recommended action window: Monitor and triage in normal cycle

NVD 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.

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0.0/ 10 priority

Sources & remediation

Other references

Weakness type (CWE)

CWE-524

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

NONE

Momentum

STABLE

Threat summary

2 mentions across 2 observed days
Momentum state: stable

What's happening

Technical details provided in 2 signals
Disclosure: 2 classified signals
Peaked 1d ago at 1 mentions (2026-09-20); latest day: 1
2 total mentions across 2 days

Deep dive

Activity timeline2 mentions / 2d

Signal classification1 categories

Disclosure

2100.0%

Referenced assets1 URL

By indicator

https://www.valtersit.com/cve/CVE-2026-93748

Full discourse2 posts

Hugo | DevOps | Cybersecurity 🇱🇻@HugoValters43d
Disclosure
CVE-2026-93748 http-cache-semantics through 4.2.0: cache directive flaw leaks other users' session cookies. CVSS 7.5, no patch yet. Audit your cache layer now. https://www.valtersit.com/cve/CVE-2026-93748 #CVE #infosec #cybersecurity #httpcachesemantics #CVEALERT #CVE #infosec #Linux #XSS #valtersit #snippet #SysAdmin #cybersecurity #devsecops #devops #developer #100daysofcode #git #github #gitlab #redteam #blueteam #ethicalhacker #cybersecurityawareness #cybersecuritynews #cybersecuritytips #python #hacker #kali #ubuntu #debian #docker
Post summary
The text discloses a vulnerability in http-cache-semantics versions through 4.2.0, detailing a cache directive flaw that leaks session cookies with a CVSS score of 7.5, and notes that no patch is currently available.
0001047
1.1K followersView on X
Upwind Security MDR@UpwindMDR45d
Disclosure
🚨High - http-cache-semantics Cache Isolation Bypass via max-stale (CVE-2026-93748) http-cache-semantics <= 4.2.0 mishandles client Cache-Control: max-stale when evaluating security-zeroed shared-cache entries. An unauthenticated attacker can request the same URL with an oversized max-stale to force reuse of another user’s cached response, potentially exposing Set-Cookie session credentials. 👉Affected: http-cache-semantics <= 4.2.0
Post summary
The text discloses a high-severity cache isolation bypass vulnerability (CVE-2026-93748) in http-cache-semantics <= 4.2.0, explaining how mishandling of the max-stale directive allows unauthenticated attackers to access other users' cached responses and session cookies.
0001070
307 followersView on X

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