oesa-2026-1160
Vulnerability from osv_openeuler
A C++11 single-file header-only cross platform HTTP/HTTPS library. It's extremely easy to setup. Just include httplib.h file in your code!
Security Fix(es):
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the write_headers function does not check for CR & LF characters in user supplied headers, allowing untrusted header value to escape header lines.
This vulnerability allows attackers to add extra headers, modify request body unexpectedly & trigger an SSRF attack. When combined with a server that supports http1.1 pipelining (springboot, python twisted etc), this can be used for server side request forgery (SSRF). Version 0.30.0 fixes this issue.(CVE-2026-21428)
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 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. An attacker can exploit this by sending a compressed payload with a very high compression ratio (e.g., a zip bomb), which upon decompression consumes excessive memory, leading to service unavailability.(CVE-2026-22776)
| URL | Type | |
|---|---|---|
{
"affected": [
{
"ecosystem_specific": {
"aarch64": [
"cpp-httplib-0.30.1-1.oe2403sp2.aarch64.rpm",
"cpp-httplib-debuginfo-0.30.1-1.oe2403sp2.aarch64.rpm",
"cpp-httplib-debugsource-0.30.1-1.oe2403sp2.aarch64.rpm",
"cpp-httplib-devel-0.30.1-1.oe2403sp2.aarch64.rpm"
],
"src": [
"cpp-httplib-0.30.1-1.oe2403sp2.src.rpm"
],
"x86_64": [
"cpp-httplib-0.30.1-1.oe2403sp2.x86_64.rpm",
"cpp-httplib-debuginfo-0.30.1-1.oe2403sp2.x86_64.rpm",
"cpp-httplib-debugsource-0.30.1-1.oe2403sp2.x86_64.rpm",
"cpp-httplib-devel-0.30.1-1.oe2403sp2.x86_64.rpm"
]
},
"package": {
"ecosystem": "openEuler:24.03-LTS-SP2",
"name": "cpp-httplib",
"purl": "pkg:rpm/openEuler/cpp-httplib\u0026distro=openEuler-24.03-LTS-SP2"
},
"ranges": [
{
"events": [
{
"introduced": "0"
},
{
"fixed": "0.30.1-1.oe2403sp2"
}
],
"type": "ECOSYSTEM"
}
]
}
],
"database_specific": {
"severity": "High"
},
"details": "A C++11 single-file header-only cross platform HTTP/HTTPS library. It\u0026amp;apos;s extremely easy to setup. Just include httplib.h file in your code!\r\n\r\nSecurity Fix(es):\n\ncpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.30.0, the ``write_headers`` function does not check for CR \u0026amp; LF characters in user supplied headers, allowing untrusted header value to escape header lines.\nThis vulnerability allows attackers to add extra headers, modify request body unexpectedly \u0026amp; trigger an SSRF attack. When combined with a server that supports http1.1 pipelining (springboot, python twisted etc), this can be used for server side request forgery (SSRF). Version 0.30.0 fixes this issue.(CVE-2026-21428)\n\ncpp-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 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. An attacker can exploit this by sending a compressed payload with a very high compression ratio (e.g., a zip bomb), which upon decompression consumes excessive memory, leading to service unavailability.(CVE-2026-22776)",
"id": "OESA-2026-1160",
"modified": "2026-08-06T11:10:11Z",
"published": "2026-01-16T11:10:11Z",
"references": [
{
"type": "ADVISORY",
"url": "https://www.openeuler.org/zh/security/security-bulletins/detail/?id=openEuler-SA-2026-1160"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-21428"
},
{
"type": "ADVISORY",
"url": "https://nvd.nist.gov/vuln/detail/CVE-2026-22776"
}
],
"schema_version": "1.7.2",
"severity": [
{
"score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
"type": "CVSS_V4"
}
],
"summary": "cpp-httplib security update",
"upstream": [
"CVE-2026-21428",
"CVE-2026-22776"
]
}
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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