CVE-2026-56021 (GCVE-0-2026-56021)

Vulnerability from cvelistv5 – Published: 2026-06-18 16:11 – Updated: 2026-06-18 16:11
VLAI
Title
Webmin information disclosure via regex pattern
Summary
Webmin allows unauthenticated attackers to read the contents of any file ending in .conf within module directories, due to a bypassable regex pattern.
Severity
5.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
6.9 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N
CWE
  • CWE-185 - Incorrect Regular Expression
  • CWE-777 - Regular Expression without Anchors
Assigner
References
Impacted products
Vendor Product Version
Webmin Webmin Affected: *
Create a notification for this product.
Date Public
2026-06-18 00:00
Credits
Adem El Adeb, vulone.com/vul1.com
Show details on NVD website
To clipboard 

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            "baseSeverity": "MEDIUM",
            "privilegesRequired": "NONE",
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              "options": [
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              "role": "CISA Coordinator",
              "timestamp": "2026-05-29T20:05:32.308076Z",
              "version": "2.0.3"
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        {
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              "type": "CWE"
            }
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        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-06-18T16:11:46.310Z",
        "orgId": "9119a7d8-5eab-497f-8521-727c672e3725",
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          "url": "https://webmin.com/security/#webmin-prior-to-2641"
        },
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          "name": "url",
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    "dateReserved": "2026-06-18T14:15:35.109Z",
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    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}


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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

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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.


Detection rules are retrieved from Rulezet.