CVE-2020-1915

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Source
https://cve.org/CVERecord?id=CVE-2020-1915
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1915.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2020-1915
Aliases
Downstream
Published
2020-10-26T21:15:12Z
Modified
2026-11-04T07:07:08Z
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
[none]
Details

An out-of-bounds read in the JavaScript Interpreter in Facebook Hermes prior to commit 8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0 allows attackers to cause a denial of service attack or possible further memory corruption via crafted JavaScript. Note that this is only exploitable if the application using Hermes permits evaluation of untrusted JavaScript. Hence, most React Native applications are not affected.

Database specific 
{
    "unresolved_ranges": [
        {
            "cpes": [
                "cpe:2.3:a:facebook:hermes:*:*:*:*:*:*:*:*"
            ],
            "extracted_events": [
                {
                    "range": [
                        {
                            "fixed": "2020-09-25"
                        }
                    ],
                    "source": "CPE_RANGE"
                }
            ],
            "vendor_product": "facebook:hermes"
        }
    ]
}
References

Affected packages

Git / github.com/facebook/hermes

Affected ranges

Type
GIT
Repo
https://github.com/facebook/hermes
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0"
                },
                {
                    "fixed": "8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0"
                }
            ],
            "source": "DESCRIPTION"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1915.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "function_hash": "76102199999832603340578665056600422627",
            "length": 6272
        },
        "id": "CVE-2020-1915-6791e760",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0",
        "target": {
            "file": "lib/VM/JSObject.cpp",
            "function": "JSObject::putComputedWithReceiver_RJS"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "135956144034824287599203510240045520860",
                "59535154216330709822336031287228864899",
                "302904766700754913432128973260486388357",
                "89188091305003455035125742677423848648",
                "316762698872662512411724767772084270194",
                "31758357314634255677939750668130947896",
                "301263213436010585541961853561609555009",
                "62451868809626111623333399987658352124",
                "4344302303076974697748645628003218526",
                "194498491550440887239009867205058987516",
                "62691305519150685532162300463104589325",
                "336442159923576452865511176140965095980",
                "157007665875523114602629377540372985735",
                "228490885837214343650280659939156114162",
                "33654241025074145835090929311068958911",
                "165659690762511317841694500129088008235",
                "86187380690697214891225919962034128225",
                "226980569898833179271290565157943248023",
                "108104453199949632992716964723728254700",
                "91188019690492403697932285237953900019",
                "192592645315053103672921702974531164666",
                "221517485036356998195263321630054925195",
                "179144560348862641670572785007147119248",
                "46851308687093390178893686184883546023"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2020-1915-eed8507a",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/facebook/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0",
        "target": {
            "file": "lib/VM/JSObject.cpp"
        }
    }
]
vanir_signatures_modified 
"2026-11-04T07:07:08Z"

Git / github.com/meta/hermes

Affected ranges

Type
GIT
Repo
https://github.com/meta/hermes
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "fixed": "8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0"
                }
            ],
            "source": "REFERENCES_COMMIT"
        }
    ]
}

Affected versions

v0.*
v0.1.0
v0.1.1
v0.2.1
v0.3.0
v0.4.0
v0.5.0
v0.6.0
v0.7.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2020-1915.json"
vanir_signatures 
[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "135956144034824287599203510240045520860",
                "59535154216330709822336031287228864899",
                "302904766700754913432128973260486388357",
                "89188091305003455035125742677423848648",
                "316762698872662512411724767772084270194",
                "31758357314634255677939750668130947896",
                "301263213436010585541961853561609555009",
                "62451868809626111623333399987658352124",
                "4344302303076974697748645628003218526",
                "194498491550440887239009867205058987516",
                "62691305519150685532162300463104589325",
                "336442159923576452865511176140965095980",
                "157007665875523114602629377540372985735",
                "228490885837214343650280659939156114162",
                "33654241025074145835090929311068958911",
                "165659690762511317841694500129088008235",
                "86187380690697214891225919962034128225",
                "226980569898833179271290565157943248023",
                "108104453199949632992716964723728254700",
                "91188019690492403697932285237953900019",
                "192592645315053103672921702974531164666",
                "221517485036356998195263321630054925195",
                "179144560348862641670572785007147119248",
                "46851308687093390178893686184883546023"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2020-1915-017cec76",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/meta/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0",
        "target": {
            "file": "lib/VM/JSObject.cpp"
        }
    },
    {
        "deprecated": false,
        "digest": {
            "function_hash": "76102199999832603340578665056600422627",
            "length": 6272
        },
        "id": "CVE-2020-1915-744bd6cb",
        "signature_type": "Function",
        "signature_version": "v1",
        "source": "https://github.com/meta/hermes/commit/8cb935cd3b2321c46aa6b7ed8454d95c75a7fca0",
        "target": {
            "file": "lib/VM/JSObject.cpp",
            "function": "JSObject::putComputedWithReceiver_RJS"
        }
    }
]
vanir_signatures_modified 
"2026-11-04T07:07:08Z"