CVE Explorer
CVE-2026-28434
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 be
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"cpp-httplib","vendor":"yhirose","versions":[{"status":"affected","version":"< 0.35.0"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:fcd974e1f421514482b1ea0daddfffb68c668f09e68a2510f6a41d9861792a03 · sha256:43f19bd10f47b4dd… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":5.3,"baseSeverity":"MEDIUM","confidentialityImpact":"LOW","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N","version":"3.1"},"metric_type":"cvssV3_1"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:fcd974e1f421514482b1ea0daddfffb68c668f09e68a2510f6a41d9861792a03 · sha256:43f19bd10f47b4dd… · /containers/cna/metrics/0/cvssV3_1
CWE assertions
1 source assertion{"cweId":"CWE-200","description":"CWE-200: Exposure of Sensitive Information to an Unauthorized Actor","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:fcd974e1f421514482b1ea0daddfffb68c668f09e68a2510f6a41d9861792a03 · sha256:43f19bd10f47b4dd… · /containers/cna/problemTypes/0/descriptions/0
Source references
2 source assertions{"name":"https://github.com/yhirose/cpp-httplib/commit/defd907c7469c5c8281247b73bbd07be24c31164","tags":["x_refsource_MISC"],"url":"https://github.com/yhirose/cpp-httplib/commit/defd907c7469c5c8281247b73bbd07be24c31164"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fcd974e1f421514482b1ea0daddfffb68c668f09e68a2510f6a41d9861792a03 · sha256:43f19bd10f47b4dd… · /containers/cna/references/1
{"name":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-8mpw-r4gc-xm7q","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-8mpw-r4gc-xm7q"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:fcd974e1f421514482b1ea0daddfffb68c668f09e68a2510f6a41d9861792a03 · sha256:43f19bd10f47b4dd… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.