FKIE_CVE-2025-40916
Vulnerability from fkie_nvd - Published: 2025-06-16 11:15 - Updated: 2026-06-17 09:22
Severity
Summary
Mojolicious::Plugin::CaptchaPNG version 1.05 for Perl uses a weak random number source for generating the captcha.
That version uses the built-in rand() function for generating the captcha text as well as image noise, which is insecure.
References
Impacted products
| Vendor | Product | Version |
|---|
{
"affected": [
{
"affectedData": [
{
"collectionURL": "https://cpan.org/modules",
"defaultStatus": "unaffected",
"packageName": "Mojolicious-Plugin-CaptchaPNG",
"product": "Mojolicious::Plugin::CaptchaPNG",
"repo": "https://github.com/gryphonshafer/Mojo-Plugin-CaptchaPNG",
"vendor": "GRYPHON",
"versions": [
{
"status": "affected",
"version": "1.05",
"versionType": "custom"
}
]
}
],
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e"
}
],
"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Mojolicious::Plugin::CaptchaPNG version 1.05 for Perl uses a weak random number source for generating the captcha.\n\nThat version uses the built-in rand() function for generating the captcha text as well as image noise, which is insecure."
},
{
"lang": "es",
"value": "La versi\u00f3n 1.05 de Mojolicious::Plugin::CaptchaPNG para Perl utiliza una fuente de n\u00fameros aleatorios d\u00e9bil para generar el captcha. Esta versi\u00f3n utiliza la funci\u00f3n rand() integrada para generar el texto del captcha, as\u00ed como el ruido de la imagen, lo cual es inseguro."
}
],
"id": "CVE-2025-40916",
"lastModified": "2026-06-17T09:22:17.377",
"metrics": {
"cvssMetricV31": [
{
"cvssData": {
"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "NONE",
"baseScore": 9.1,
"baseSeverity": "CRITICAL",
"confidentialityImpact": "HIGH",
"integrityImpact": "HIGH",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N",
"version": "3.1"
},
"exploitabilityScore": 3.9,
"impactScore": 5.2,
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"type": "Secondary"
}
],
"ssvcV203": [
{
"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
"ssvcData": {
"id": "CVE-2025-40916",
"options": [
{
"exploitation": "none"
},
{
"automatable": "yes"
},
{
"technicalImpact": "partial"
}
],
"role": "CISA Coordinator",
"timestamp": "2025-06-16T13:31:12.359144Z",
"version": "2.0.3"
}
}
]
},
"published": "2025-06-16T11:15:17.793",
"references": [
{
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"url": "https://metacpan.org/pod/perlfunc#rand"
},
{
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"url": "https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.04/diff/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.05/lib/Mojolicious/Plugin/CaptchaPNG.pm"
},
{
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"url": "https://metacpan.org/release/GRYPHON/Mojolicious-Plugin-CaptchaPNG-1.06/changes"
},
{
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"url": "https://security.metacpan.org/docs/guides/random-data-for-security.html"
}
],
"sourceIdentifier": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"vulnStatus": "Deferred",
"weaknesses": [
{
"description": [
{
"lang": "en",
"value": "CWE-338"
},
{
"lang": "en",
"value": "CWE-804"
}
],
"source": "9b29abf9-4ab0-4765-b253-1875cd9b441e",
"type": "Secondary"
}
]
}
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Sightings
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Nomenclature
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The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the
vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
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The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.
Browse all ATT&CK techniques and the vulnerabilities related to each.
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Related by attack behaviour
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