CVE-2026-67550

re2 provides Node.js bindings for Google's RE2 regular expression engine. Prior to 1.25.2, re2 validates lastIndex against the UTF-8 byte length of a subject but uses it as a UTF-16 code-unit offset in exec, test, match, replace, and split, allowing an attacker-influenced lastIndex on a non-ASCII subject to trigger an out-of-bounds heap read and an uncatchable process crash, with limited heap information disclosure in some cases. This issue is fixed in 1.25.2.

Database specific

{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-125"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/67xxx/CVE-2026-67550.json"
}

References

Affected packages

Git / github.com/uhop/node-re2

Affected ranges

Type

GIT

Repo

https://github.com/uhop/node-re2

Events

Introduced

Fixed

56293de4fc0914d7bc35f92e98de25b0d9bb417d

Fixed

264378394ec80e1cca2188ecb496829da2eec6c8

Database specific

Show details

{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.25.2"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "REFERENCES"
    ]
}

Affected versions

0.*

0.9.0

1.*

1.0.0

1.1.0

1.1.1

1.10.0

1.10.1

1.10.2

1.10.3

1.10.4

1.10.5

1.11.0

1.12.0

1.12.1

1.13.0

1.14.0

1.15.0

1.15.1

1.15.2

1.15.3

1.15.4

1.15.5

1.15.6

1.15.7

1.15.8

1.15.9

1.16.0

1.17.0

1.17.1

1.17.2

1.17.3

1.17.4

1.17.5

1.17.6

1.17.7

1.17.8

1.18.0

1.18.1

1.18.2

1.18.3

1.19.0

1.19.1

1.19.2

1.2.0

1.20.0

1.20.1

1.20.10

1.20.11

1.20.12

1.20.2

1.20.3

1.20.4

1.20.5

1.20.6

1.20.7

1.20.8

1.20.9

1.21.0

1.21.1

1.21.2

1.21.3

1.21.4

1.21.5

1.22.0

1.22.1

1.22.2

1.22.3

1.23.0

1.23.1

1.23.2

1.23.3

1.24.0

1.24.1

1.25.0

1.25.1

1.3.0

1.3.1

1.3.2

1.3.3

1.4.0

1.4.1

1.5.0

1.6.0

1.6.1

1.6.2

1.7.0

1.8.0

1.8.1

1.8.2

1.8.3

1.8.4

1.9.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-67550.json"

vanir_signatures

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        "target": {
            "file": "lib/addon.cc"
        },
        "deprecated": false,
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        "id": "CVE-2026-67550-0a0f1789",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
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        "signature_type": "Line"
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        "target": {
            "file": "lib/wrapped_re2.h"
        },
        "deprecated": false,
        "source": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d",
        "id": "CVE-2026-67550-21b7f83e",
        "signature_version": "v1",
        "digest": {
            "threshold": 0.9,
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        },
        "signature_type": "Line"
    },
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        "target": {
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            "file": "lib/match.cc"
        },
        "deprecated": false,
        "source": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d",
        "id": "CVE-2026-67550-4164da59",
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        "deprecated": false,
        "source": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d",
        "id": "CVE-2026-67550-81243e07",
        "signature_version": "v1",
        "digest": {
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        "signature_type": "Line"
    },
    {
        "target": {
            "function": "getUtf16PositionByCounter",
            "file": "lib/wrapped_re2.h"
        },
        "deprecated": false,
        "source": "https://github.com/uhop/node-re2/commit/56293de4fc0914d7bc35f92e98de25b0d9bb417d",
        "id": "CVE-2026-67550-83ee55b7",
        "signature_version": "v1",
        "digest": {
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        "signature_type": "Function"
    },
    {
        "target": {
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        },
        "deprecated": false,
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        "signature_version": "v1",
        "digest": {
            "length": 491.0,
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        "signature_type": "Function"
    }
]

vanir_signatures_modified

"2026-08-12T16:41:44Z"