CVE-2026-22776
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.1, a Denial of Service (DoS) vulnerability exists in cpp-httplib due to the unsafe handling of compressed HTTP request bodies (Content-Encoding: gzip, br, etc.). The library validates the payload_max_length against the compressed data size received from the network, but does not limit the size of the decompressed data stored in memory.
- Affected products
- Cpp-Httplib
- Yhirose Cpp-httplib
- < 0.30.1
- Fix
- Available
- CVSS 4.0
- 8.7 HIGH
- CVSS 3.1
- 7.5 HIGH
- EPSS
- 0.4% (28th percentile)
- Weakness
- CWE-409
- NVD status
- Analyzed
- Published
- 2026-01-12
CVE-2026-22776 at NVD
No indexed exploits for CVE-2026-22776 yet
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No exploit for CVE-2026-22776 has been indexed yet. Our index is built from live traffic and upstream syncs, so this page can only say what it knows — not that no exploit exists.