CVE-2025-53629
- Source
- https://cve.org/CVERecord?id=CVE-2025-53629
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53629.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2025-53629
- Downstream
- Related
- Published
- 2025-07-10T19:46:01.872Z
- Modified
- 2026-07-15T20:54:36.485806Z
- Severity
-
- 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
- Summary
- cpp-httplib Unbounded Memory Allocation in Chunked/No-Length Requests Vulnerability
- Details
-
cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.23.0, incoming requests using Transfer-Encoding: chunked in the header can allocate memory arbitrarily in the server, potentially leading to its exhaustion. This vulnerability is fixed in 0.23.0. NOTE: This vulnerability is related to CVE-2025-53628.
- Database specific
{ "cwe_ids": [ "CWE-770" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53629.json", "cna_assigner": "GitHub_M" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53629.json
- https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-j6p8-779x-p5pw
- https://github.com/yhirose/cpp-httplib/security/advisories/GHSA-qjmq-h3cc-qv6w
- https://nvd.nist.gov/vuln/detail/CVE-2025-53629
- https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99
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": "0.23.0" } ] }
Affected versions
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
v0.3.0
v0.3.1
v0.3.2
v0.3.3
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
"2026-07-15T20:54:36Z"
vanir_signatures
[
{
"signature_type": "Line",
"target": {
"file": "httplib.h"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99",
"id": "CVE-2025-53629-51536f41",
"signature_version": "v1",
"digest": {
"line_hashes": [
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"288326940859781463957734342028996878695",
"297363821923707760301441192804047150422",
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"332961119277007769851213870930383911487",
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"120576207178700527404694121735721518876",
"53237574012263135774486892352033226510",
"292634964069883026736939148290991205255",
"307015537166185343876694251539742520392",
"132516790775411026159359503908778088653",
"169837434549799774299341236548756316779",
"292335094172956404578648148576097864303",
"259254892090884070752440449394210209075",
"164380346724209714837267416781148998330",
"59423945478876370211613438286834497724",
"179017214993518399257847108043015089395",
"247055664394971458722388735134688385937",
"142383695468159561099580613468756248028",
"304167139755899475484609117919485067791",
"271218819453716100754564275103897560218",
"93695726838761958007818518629843454012",
"49850466351355713629992903153275447867",
"269529242931526513953273825685870424713",
"246341959574433841927344090040453605083",
"104200263907913986650594648025431208928",
"201599137572375611230894186625871262686",
"34454009186070578903854342300730811724",
"23222426063267238159999575072059450696",
"279196033155740987593201962810448484335",
"111661590877232261277549872926427177169",
"196912973415306529857786817635776453596"
],
"threshold": 0.9
}
},
{
"signature_type": "Function",
"target": {
"file": "httplib.h",
"function": "read_content_chunked"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99",
"id": "CVE-2025-53629-d6331234",
"signature_version": "v1",
"digest": {
"function_hash": "300647741648752637084487631199956454766",
"length": 1475.0
}
},
{
"signature_type": "Line",
"target": {
"file": "test/test.cc"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99",
"id": "CVE-2025-53629-ddf24767",
"signature_version": "v1",
"digest": {
"line_hashes": [
"71835222838686621250286688722251933616",
"276584867859912751115153440147786483036",
"291578792499164081159744552859857304325",
"116780648414751796823354903953399496260",
"289036440152358346294886277958434667601",
"332570344452481549640569201778889365754"
],
"threshold": 0.9
}
},
{
"signature_type": "Function",
"target": {
"file": "test/test.cc",
"function": "TEST_F"
},
"deprecated": false,
"source": "https://github.com/yhirose/cpp-httplib/commit/17ba303889b8d4d719be3879a70639ab653efb99",
"id": "CVE-2025-53629-f7fb1db0",
"signature_version": "v1",
"digest": {
"function_hash": "100031104252767916215606970190726631503",
"length": 390.0
}
}
]
source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53629.json"