FKIE_CVE-2020-26238
Vulnerability from fkie_nvd - Published: 2020-11-25 00:15 - Updated: 2026-06-17 03:07
Severity
7.9 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:C/C:H/I:H/A:N
8.1 (High) - CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H
8.1 (High) - CVSS:3.1/
Summary
Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3.
References
Impacted products
| Vendor | Product | Version | |
|---|---|---|---|
| cron-utils_project | cron-utils | * |
{
"affected": [
{
"affectedData": [
{
"product": "cron-utils",
"vendor": "jmrozanec",
"versions": [
{
"status": "affected",
"version": "\u003c 9.1.3"
}
]
}
],
"source": "security-advisories@github.com"
}
],
"configurations": [
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"nodes": [
{
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"criteria": "cpe:2.3:a:cron-utils_project:cron-utils:*:*:*:*:*:*:*:*",
"matchCriteriaId": "8238FCBC-72CF-45D6-93F9-FF1B7D14046F",
"versionEndExcluding": "9.1.3",
"vulnerable": true
}
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"cveTags": [],
"descriptions": [
{
"lang": "en",
"value": "Cron-utils is a Java library to parse, validate, migrate crons as well as get human readable descriptions for them. In cron-utils before version 9.1.3, a template Injection vulnerability is present. This enables attackers to inject arbitrary Java EL expressions, leading to unauthenticated Remote Code Execution (RCE) vulnerability. Only projects using the @Cron annotation to validate untrusted Cron expressions are affected. This issue was patched in version 9.1.3."
},
{
"lang": "es",
"value": "Cron-utils es una biblioteca de Java para analizar, comprobar, migrar crons y obtener descripciones legibles por humanos para ellos.\u0026#xa0;En cron-utils versiones anteriores a 9.1.3, se presenta una vulnerabilidad de inyecci\u00f3n de plantilla.\u0026#xa0;Esto permite a atacantes inyectar expresiones EL de Java arbitrarias, conllevando a una vulnerabilidad de Ejecuci\u00f3n de C\u00f3digo Remota (RCE) no autenticada.\u0026#xa0;Solo est\u00e1n afectados los proyectos que usan la anotaci\u00f3n @Cron para comprobar expresiones Cron que no son confiables.\u0026#xa0;Este problema se corrigi\u00f3 en la versi\u00f3n 9.1.3"
}
],
"id": "CVE-2020-26238",
"lastModified": "2026-06-17T03:07:53.570",
"metrics": {
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"published": "2020-11-25T00:15:10.747",
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Experimental. This forecast is provided for visualization only and may change without notice. Do not use it for operational decisions.
Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.
Sightings
| Author | Source | Type | Date | Other |
|---|
Nomenclature
- Seen: The vulnerability was mentioned, discussed, or observed by the user.
- Confirmed: The vulnerability has been validated from an analyst's perspective.
- Published Proof of Concept: A public proof of concept is available for this vulnerability.
- Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
- Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
- Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
- Not confirmed: The user expressed doubt about the validity of the vulnerability.
- Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.
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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
model, served locally by ML-Gateway.
They have not been verified by an analyst and are provided for guidance only.
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.
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
Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.
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