CVE Explorer

CVE-2026-28435

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.35.0, cpp-httplib (httplib.h) does not enforce Server::set_payload_max_length() on the decompressed request body when using HandlerWithContentReader (streaming ContentReader) with Content-Encoding: gzip (or other supported encodings). A small compressed payload can expand beyond the configured payload limit and be processed by the application, enabling a payload size limit bypass and potential denial of

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ec3028c403e5f4b85aafac4855b7d1c356ffc31193f6b514a67bebb6129ca651

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/problemTypes/1/descriptions/0

Affected products and versions

1 source assertion

{"product":"cpp-httplib","vendor":"yhirose","versions":[{"status":"affected","version":"< 0.35.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackVector":"NETWORK","availabilityImpact":"HIGH","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"NONE","integrityImpact":"NONE","privilegesRequired":"NONE","scope":"UNCHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/problemTypes/0/descriptions/0

{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/problemTypes/1/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/yhirose/cpp-httplib/commit/c99d7472b5cf4869d3897b9afc9792063a3d15a8","tags":["x_refsource_MISC"],"url":"https://github.com/yhirose/cpp-httplib/commit/c99d7472b5cf4869d3897b9afc9792063a3d15a8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /containers/cna/references/1

{"name":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xvfx-w463-6fpp","tags":["x_refsource_CONFIRM"],"url":"https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-xvfx-w463-6fpp"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:1470aba8c965ba0d44cee5180eb7c19f8e4357d279f119fe447762a3d8642703 · sha256:39bc5d54c5840c58… · /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.

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