CVE-2026-79590

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Source

https://cve.org/CVERecord?id=CVE-2026-79590

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79590.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-79590

Downstream

DEBIAN-CVE-2026-79590

Published

2026-09-10T00:00:00Z

Modified

2026-09-12T08:07:31Z

Summary

[none]

Details

A NULL pointer dereference vulnerability exists in the Prism parser component of mruby 4.0.0. An attacker can provide a specially crafted Ruby source file that triggers the parser to pass a NULL pointer to nonnull string handling functions, resulting in undefined behavior and application crash.

Database specific

{
    "cna_assigner": "mitre",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/79xxx/CVE-2026-79590.json"
}

References

Affected packages

Git / github.com/takumin/mruby

Affected ranges

Type

GIT

Repo

https://github.com/takumin/mruby

Events

Introduced

Fixed

c6866eed4ad5640b552ba79d16063e7ec70a0ac9

Database specific

Show details

{
    "source": "REFERENCES"
}

Affected versions

1.*

1.0.0

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-79590.json"

vanir_signatures

[
    {
        "deprecated": false,
        "digest": {
            "line_hashes": [
                "299320156707072644351766599381672284948",
                "160045294839455634109678547094420768054",
                "202852509292430754778706357174299523567"
            ],
            "threshold": 0.9
        },
        "id": "CVE-2026-79590-2d157a0b",
        "signature_type": "Line",
        "signature_version": "v1",
        "source": "https://github.com/takumin/mruby/commit/c6866eed4ad5640b552ba79d16063e7ec70a0ac9",
        "target": {
            "file": "mrbgems/mruby-compiler/include/prism_xallocator.h"
        }
    }
]

vanir_signatures_modified

"2026-09-12T08:07:31Z"