CVE-2025-53628

cpp-httplib is a C++11 single-file header-only cross platform HTTP/HTTPS library. Prior to 0.20.1, cpp-httplib does not have a limit for a unique line, permitting an attacker to explore this to allocate memory arbitrarily. This vulnerability is fixed in 0.20.1. NOTE: This vulnerability is related to CVE-2025-53629.

Database specific

{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2025/53xxx/CVE-2025-53628.json",
    "cwe_ids": [
        "CWE-770",
        "CWE-835"
    ]
}

References

Affected packages

Git / github.com/yhirose/cpp-httplib

Affected ranges

Type

GIT

Repo

https://github.com/yhirose/cpp-httplib

Events

Introduced

Fixed

3af7f2c16147f3fbc6e4d717032daf505dc1652c

Fixed

7b752106ac42bd5b907793950d9125a0972c8e8e

Database specific

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "0.20.1"
        }
    ],
    "cpe": "cpe:2.3:a:yhirose:cpp-httplib:*:*:*:*:*:*:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ]
}

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

v0.3.0

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

[
    {
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 568.0,
            "function_hash": "273893763024305777493719782969948749593"
        },
        "id": "CVE-2025-53628-18f6418d",
        "signature_type": "Function",
        "source": "https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e",
        "target": {
            "function": "stream_line_reader::getline",
            "file": "httplib.h"
        }
    },
    {
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "257985735793026435818868796645710254975",
                "47152089635226046254886122597760746000",
                "277935455136829786777737757595575415649",
                "240428477853514944703987908155197738368",
                "98734447240544736125538254896320203198",
                "12401696439684324966363430957733437059",
                "232918337349665503594913121985807921549",
                "297344248686960807045559079316116779264",
                "235855093667763522674929287323664717147",
                "52669484370524566126415748220010415188"
            ]
        },
        "id": "CVE-2025-53628-1b351755",
        "signature_type": "Line",
        "source": "https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e",
        "target": {
            "file": "test/test.cc"
        }
    },
    {
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "length": 19168.0,
            "function_hash": "88011015293096735173591467930571185687"
        },
        "id": "CVE-2025-53628-d289d55f",
        "signature_type": "Function",
        "source": "https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e",
        "target": {
            "function": "SetUp",
            "file": "test/test.cc"
        }
    },
    {
        "signature_version": "v1",
        "deprecated": false,
        "digest": {
            "threshold": 0.9,
            "line_hashes": [
                "32898783120307941874368505242798629186",
                "162037324753814312112070594927690416950",
                "287480307527108457454058770006969193908",
                "301745308707818391118521842106411970281",
                "263861363138065655965234048318932182331",
                "218911545314115535196603612996816985361",
                "260379456301400884034826106084209849017"
            ]
        },
        "id": "CVE-2025-53628-f50b3fbc",
        "signature_type": "Line",
        "source": "https://github.com/yhirose/cpp-httplib/commit/7b752106ac42bd5b907793950d9125a0972c8e8e",
        "target": {
            "file": "httplib.h"
        }
    }
]

vanir_signatures_modified

"2026-07-22T04:02:18Z"

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2025-53628.json"