CVE-2026-42497

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Source
https://cve.org/CVERecord?id=CVE-2026-42497
Import Source
https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42497.json
JSON Data
https://api.test.osv.dev/v1/vulns/CVE-2026-42497
Downstream
Published
2026-05-26T00:17:50.656Z
Modified
2026-06-18T03:54:58.779770285Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N CVSS Calculator
Summary
Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory
Details

Archive::Tar versions before 3.08 for Perl extract hardlinks to attacker controlled paths outside the extraction directory.

makespecial_file() passes the tar header's linkname to link() without validating it against absolute paths or .. segments, creating a hardlink that shares the victim file's inode.

A subsequent write through the extracted name modifies the victim file, and the post-extraction chmod, chown, and utime block in extractfile() (guarded only against symlinks via -l) applies the tar header's mode, owner, and timestamps to the shared inode during extraction alone.

Database specific 
{
    "cna_assigner": "CPANSec",
    "cwe_ids": [
        "CWE-59",
        "CWE-732"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/42xxx/CVE-2026-42497.json"
}
References

Affected packages

Git / github.com/jib/archive-tar-new

Affected ranges

Type
GIT
Repo
https://github.com/jib/archive-tar-new
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
56670a5136ae16cacdca3ccd0735de044af01b48
Fixed
17c873492a05eddc0de18c1485e0b2cccd5a9158
Database specific 
{
    "cpe": "cpe:2.3:a:archive\\:\\:tar_project:archive\\:\\:tar:*:*:*:*:*:perl:*:*",
    "source": [
        "CPE_RANGE",
        "REFERENCES"
    ],
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "3.08"
        }
    ]
}

Affected versions

1.*
1.78
1.80
1.82
1.84
1.86
1.88
1.92
1.93_01
1.93_02
1.94
1.96
1.98
2.*
2.00
2.02
2.04
2.06
2.08
2.10
2.12
2.14
2.16
2.18
2.20
2.22
2.24
2.26
2.28
2.30
2.32
2.34
2.36
2.38
2.40
3.*
3.00
3.02
3.04
3.06

Database specific

source 
"https://storage.googleapis.com/osv-test-cve-osv-conversion/osv-output/CVE-2026-42497.json"