CVE-2026-5082

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Source

https://cve.org/CVERecord?id=CVE-2026-5082

Import Source

https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5082.json

JSON Data

https://api.osv.dev/v1/vulns/CVE-2026-5082

Published

2026-04-08T05:48:43.633Z

Modified

2026-07-27T03:56:41.193511977Z

Severity

5.3 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L CVSS Calculator

Summary

Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id

Details

Amon2::Plugin::Web::CSRFDefender versions from 7.00 through 7.03 for Perl generate an insecure session id.

The generatesessionid function will attempt to read bytes from the /dev/urandom device, but if that is unavailable then it generates bytes using SHA-1 hash seeded with the built-in rand() function, the PID, and the high resolution epoch time. The PID will come from a small set of numbers, and the epoch time may be guessed, if it is not leaked from the HTTP Date header. The built-in rand function is unsuitable for cryptographic usage.

Amon2::Plugin::Web::CSRFDefender versions before 7.00 were part of Amon2, which was vulnerable to insecure session ids due to CVE-2025-15604.

Note that the author has deprecated this module.

Database specific

{
    "cwe_ids": [
        "CWE-338",
        "CWE-340"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/5xxx/CVE-2026-5082.json",
    "cna_assigner": "CPANSec"
}

References

Affected packages

Git / github.com/tokuhirom/amon2-plugin-web-csrfdefender

Affected ranges

Type

GIT

Repo

https://github.com/tokuhirom/amon2-plugin-web-csrfdefender

Events

Introduced

f52bc5567d5f863a89be8bef18fcaa42ed33a803

Last affected

de2fe66c42b3ec8f4e202a449e22fa24d6049bd4

Database specific

{
    "source": "AFFECTED_FIELD",
    "extracted_events": [
        {
            "introduced": "7.00"
        },
        {
            "last_affected": "7.03"
        }
    ]
}

Affected versions

7.*

7.00

7.01

7.02

7.03

Database specific

source

"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-5082.json"