CVE-2026-29076
- Source
- https://cve.org/CVERecord?id=CVE-2026-29076
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29076.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-29076
- Aliases
-
- GHSA-qq6v-r583-3h69
- Downstream
- Related
- Published
- 2026-03-07T16:08:56.048Z
- Modified
- 2026-07-22T03:08:50.765760Z
- Severity
-
- 5.9 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- cpp-httplib: Stack Overflow Denial of Service (DoS) via std::regex in multipart filename parsing
- Details
-
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to version 0.37.0, cpp-httplib uses std::regex (libstdc++) to parse RFC 5987 encoded filename* values in multipart Content-Disposition headers. The regex engine in libstdc++ implements backtracking via deep recursion, consuming one stack frame per input character. An attacker can send a single HTTP POST request with a crafted filename* parameter that causes uncontrolled stack growth, resulting in a stack overflow (SIGSEGV) that crashes the server process. This issue has been patched in version 0.37.0.
- Database specific
{ "cwe_ids": [ "CWE-1333", "CWE-674" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29076.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/yhirose/cpp-httplib/releases/tag/v0.37.0
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/29xxx/CVE-2026-29076.json
- https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qq6v-r583-3h69
- https://nvd.nist.gov/vuln/detail/CVE-2026-29076
- https://github.com/yhirose/cpp-httplib/commit/de296af3eb5b0d5c116470e033db900e4812c5e6
Affected packages
Git / github.com/yhirose/cpp-httplib
Affected ranges
- Type
- GIT
- Repo
- https://github.com/yhirose/cpp-httplib
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixed
- Database specific
{ "cpe": "cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*", "source": [ "CPE_RANGE", "REFERENCES" ], "extracted_events": [ { "introduced": "0" }, { "fixed": "0.37.0" } ] }
Affected versions
Other
latest
v0.*
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.10.4
v0.10.5
v0.10.6
v0.10.7
v0.10.8
v0.10.9
v0.11.0
v0.11.1
v0.11.2
v0.11.3
v0.11.4
v0.12.0
v0.12.1
v0.12.2
v0.12.3
v0.12.4
v0.12.5
v0.12.6
v0.13.0
v0.13.1
v0.13.2
v0.13.3
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.16.0
v0.16.1
v0.16.2
v0.16.3
v0.17.0
v0.17.1
v0.17.2
v0.17.3
v0.18.0
v0.18.1
v0.18.2
v0.18.3
v0.18.4
v0.18.5
v0.18.6
v0.18.7
v0.19.0
v0.2.0
v0.2.1
v0.2.2
v0.2.3
v0.2.4
v0.2.5
v0.2.6
v0.20.0
v0.20.1
v0.21.0
v0.22.0
v0.23.0
v0.23.1
v0.24.0
v0.25.0
v0.26.0
v0.27.0
v0.28.0
v0.29.0
v0.3.0
v0.3.1
v0.3.2
v0.3.3
v0.30.0
v0.30.1
v0.30.2
v0.31.0
v0.32.0
v0.33.0
v0.33.1
v0.34.0
v0.35.0
v0.4.0
v0.4.1
v0.4.2
v0.5.0
v0.5.1
v0.5.10
v0.5.11
v0.5.12
v0.5.13
v0.5.2
v0.5.3
v0.5.4
v0.5.5
v0.5.6
v0.5.7
v0.5.8
v0.5.9
v0.6.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.6.5
v0.6.6
v0.6.7
v0.7.0
v0.7.1
v0.7.10
v0.7.11
v0.7.12
v0.7.13
v0.7.14
v0.7.15
v0.7.16
v0.7.17
v0.7.18
v0.7.2
v0.7.3
v0.7.4
v0.7.5
v0.7.6
v0.7.7
v0.7.8
v0.7.9
v0.8.0
v0.8.1
v0.8.2
v0.8.3
v0.8.4
v0.8.5
v0.8.6
v0.8.7
v0.8.8
v0.8.9
v0.9.0
v0.9.1
v0.9.10
v0.9.2
v0.9.3
v0.9.4
v0.9.5
v0.9.6
v0.9.7
v0.9.8
v0.9.9
Database specific
vanir_signatures_modified
"2026-07-22T03:08:50Z"
vanir_signatures
[
{
"signature_type": "Function",
"target": {
"file": "test/test.cc",
"function": "TEST"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/de296af3eb5b0d5c116470e033db900e4812c5e6",
"id": "CVE-2026-29076-554c16a0",
"signature_version": "v1",
"digest": {
"function_hash": "237936591402214651401279883398651361996",
"length": 1108.0
}
},
{
"signature_type": "Line",
"target": {
"file": "test/test.cc"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/de296af3eb5b0d5c116470e033db900e4812c5e6",
"id": "CVE-2026-29076-7606882b",
"signature_version": "v1",
"digest": {
"line_hashes": [
"309024782862823533139338211795996186596",
"7839956594439321606962847164061496972",
"12687117214297278841990333245619558674",
"143994490375359120576663796943720785488",
"96208271181828219443939827392695470831",
"234674402923027064236410791687030770732",
"322492796322437330966953077832002777863",
"243898783827694880252824254507942876352"
],
"threshold": 0.9
}
},
{
"signature_type": "Line",
"target": {
"file": "httplib.h"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/de296af3eb5b0d5c116470e033db900e4812c5e6",
"id": "CVE-2026-29076-a521b113",
"signature_version": "v1",
"digest": {
"line_hashes": [
"283461347697145605990353131721631228646",
"317816394311432108134934590617596588190",
"260729738294240947720973995679438464087",
"92606262670744106618818917992551696386",
"758283165799264715444508233140374639",
"167685828088613054992179248988962440460",
"101730038497963474406760851837415666168",
"4886179887345815178455501738634573180",
"114384602934601073345597924936986340169",
"110186337317846723965865112085172832744",
"126759218069447842223487999870084534347",
"187208488398962529278613125758738484047",
"137054790988581298113428252414869384961",
"305920338525971726203288552478051009521",
"228300519572110876182238860862426601967",
"208931648635274734019654502913369448381",
"119198146933619949402160524817870803654",
"12382769242152171805705224765586807681",
"244547348337947176159043738983358464383",
"313086644932006488650364205763955723535",
"282884093883479764805603304034313241597",
"103189393625292220994570787459445843507",
"190412590663406317983732281701957063290",
"269790247183657763970139643354540099035",
"319058851376040146330968978522608749375",
"240522512309630831697827857464120036961",
"63023319149774050960125992398873200987",
"224680879596290974579546047781168707333",
"131499705893380037544389072140749975935",
"322513769813133753122320795084453184916"
],
"threshold": 0.9
}
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-29076.json"