cpp-httplib: HTTP header value percent-decoding in server-side `parse_header` enables CRLF injection
Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).
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| yhirose | cpp-httplib | affected |
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| Vendor | Product | Versions | ||||||||
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| Yhirose | Cpp-httplib |
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| Source | ID | Title |
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Ubuntu USN |
USN-8470-1 | cpp-httplib vulnerability |
No CVSS v4.0
No CVSS v3.0
No CVSS v2
This CVE is not in the KEV list.
Exploit prediction score: < 1% (0.295% probability within 30 days)
| Type | Values Removed | Values Added |
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| CPEs | cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:* |
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| Metrics |
ssvc
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| Type | Values Removed | Values Added |
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| First Time appeared |
Yhirose
Yhirose cpp-httplib |
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| Vendors & Products |
Yhirose
Yhirose cpp-httplib |
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| Description | cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.44.0, when cpp-httplib's server parses an incoming request, it applies percent-decoding to every header value except Location and Referer. The validity check (is_field_value) is run before decoding, so encoded %0D%0A passes the check and is then expanded to a literal \r\n byte pair inside the stored header value. This vulnerability is fixed in 0.44.0. | |
| Title | cpp-httplib: HTTP header value percent-decoding in server-side `parse_header` enables CRLF injection | |
| Weaknesses | CWE-444 CWE-93 |
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| References |
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| Metrics |
cvssV3_1
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