CVE-2026-93748
Raw vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:XCVSS and EPSS are reproduced from their sources (NVD, FIRST EPSS). Risk Priority is our own derived reading, not an NVD score.
Summary
CVE-2026-93748 is a high-severity Use of Cache Containing Sensitive Information (CWE-524) vulnerability. Its CVSS base score is 8.7 (High).
Operationally, exploitation aligns with the MITRE ATT&CK technique Data from Local System (T1005); ranked at the 42th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.
The strongest mitigations our analysis identified map to AC-3 (Access Enforcement) and AC-4 (Information Flow Enforcement) — see the control section below for these in your framework.
EU & UK References
- 🇪🇺 ENISA EUVD: EUVD-2026-83253
Vulnerability Data
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…
more
user's Set-Cookie session credentials from shared-cache entries that were deliberately zeroed for security reasons.
- CWE(s)
Related Threats
MITRE ATT&CK Enterprise Techniques
CVEs Like This One
Affected Assets
Mitigating Controls
Control response
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V14.3.2
Mitigating Controls (NIST 800-53 r5) AI
Enforces access authorizations so that cached sensitive data cannot be read by actors outside the intended sphere.
Controls information flows to keep sensitive data from leaving its authorized control sphere via caches.
Requires cryptographic or other protection of sensitive information at rest, which covers cached data.
Directly prevents unauthorized transfer of information through shared resources such as caches.
Mitigating Controls (NIST CSF 2.0) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→CSF cross-walk (authority under review) — links open the control.
Enforcing least-privilege access permissions directly limits who can read cached sensitive data.
Protecting confidentiality of data-at-rest covers caches that persist sensitive information.
Protecting data-in-use can mitigate exposure when caches hold transient sensitive values.
Logical access controls on environments reduce the chance an outsider can reach the cache.
Hardened configuration baselines can disable or secure caching of sensitive data.
Mitigating Controls (ISO/IEC 27001:2022 Annex A) AI
Derived directly from the weakness types (CWEs) cited in the NVD entry via our AI-authored CWE→ISO cross-walk (authority under review) — links open the control.
Information deletion ensures sensitive data is removed from caches when no longer needed.
Data leakage prevention can block unauthorized access to cached sensitive information.
Cryptography can protect cached data at rest, but does not address access control scope.
Secure coding practices prevent caching of sensitive data outside intended boundaries.
Information access restriction directly limits who can read cached sensitive data.