CVE-2026-42855
Analyzed Analyzed - Analysis Complete
BaseFortify

Publication date: 2026-05-12

Last updated on: 2026-05-15

Assigner: GitHub, Inc.

Description
arduino-esp32 is an Arduino core for the ESP32, ESP32-S2, ESP32-S3, ESP32-C3, ESP32-C6 and ESP32-H2 microcontrollers. Prior to 3.3.8, the WebServer Digest authentication implementation in arduino-esp32 computes the authentication hash using the URI field from the client's Authorization header, without verifying that it matches the actual requested URI. This allows an attacker who possesses any valid digest response (computed for URI-A) to authenticate requests to a completely different protected URI (URI-B), bypassing per-resource access control. This vulnerability is fixed in 3.3.8.
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Meta Information
Published
2026-05-12
Last Modified
2026-05-15
Generated
2026-05-20
EPSS Evaluated
2026-05-19
NVD
CVE-2026-42855
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
espressif arduino-esp32 to 3.3.8 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.
CWE-NVD-CWE-noinfo
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