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Affected Vendors & Products
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Solution
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Workaround
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Wed, 04 Mar 2026 21:15:00 +0000
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ssvc
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Wed, 04 Mar 2026 20:00:00 +0000
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| Description | cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, when a request handler throws a C++ exception and the application has not registered a custom exception handler via set_exception_handler(), the library catches the exception and writes its message directly into the HTTP response as a header named EXCEPTION_WHAT. This header is sent to whoever made the request, with no authentication check and no special configuration required to trigger it. The behavior is on by default. A developer who does not know to opt in to set_exception_handler() will ship a server that leaks internal exception messages to any client. This vulnerability is fixed in 0.35.0. | |
| Title | cpp-httplib's default exception handler leaks e.what() to clients via EXCEPTION_WHAT response header | |
| Weaknesses | CWE-200 | |
| References |
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| Metrics |
cvssV3_1
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Projects
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Status: PUBLISHED
Assigner: GitHub_M
Published:
Updated: 2026-03-04T20:55:40.320Z
Reserved: 2026-02-27T15:54:05.138Z
Link: CVE-2026-28434
Updated: 2026-03-04T20:55:35.685Z
Status : Received
Published: 2026-03-04T20:16:19.823
Modified: 2026-03-04T20:16:19.823
Link: CVE-2026-28434
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OpenCVE Enrichment
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