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CVE-2026-91849 (GCVE-0-2026-91849)

Vulnerability from cvelistv5 – Published: 2026-09-15 15:30 – Updated: 2026-09-15 15:30
VLAI
Title
WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload
Summary
A security flaw has been discovered in WuzhiCMS up to 4.1.0. This affects the function member::setAvatar of the file /index.php?m=member&f=user&v=setAvatar of the component Avatar Upload. The manipulation of the argument File results in unrestricted upload. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The project was informed of the problem early through an issue report but has not responded yet.
Severity
5.3 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
6.3 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
6.3 (Medium)
CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:R
CWE
Assigner
References
URL Tags
https://vuldb.com/vuln/404077 vdb-entrytechnical-description
https://vuldb.com/vuln/404077/cti signaturepermissions-required
https://vuldb.com/cve/CVE-2026-91849 third-party-advisory
https://vuldb.com/submit/933702 third-party-advisory
https://github.com/wuzhicms/wuzhicms/issues/219 exploitissue-tracking
https://github.com/wuzhicms/wuzhicms/ product
Impacted products
Vendor Product Version CPE status
n/a WuzhiCMS Affected: 4.0
Affected: 4.1.0
    cpe:2.3:a:wuzhicms:wuzhicms:*:*:*:*:*:*:*:*
Credits
ZAST.AI (VulDB User) VulDB CNA Team
Show details on NVD website
To clipboard 

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        {
          "cpes": [
            "cpe:2.3:a:wuzhicms:wuzhicms:*:*:*:*:*:*:*:*"
          ],
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          ],
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          "vendor": "n/a",
          "versions": [
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              "version": "4.0"
            },
            {
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        }
      ],
      "metrics": [
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          "tags": [
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          "tags": [
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          "time": "2026-09-15T10:49:49.000Z",
          "value": "VulDB entry last update"
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      ],
      "title": "WuzhiCMS Avatar Upload index.php setAvatar unrestricted upload",
      "x_generator": [
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  },
  "cveMetadata": {
    "assignerOrgId": "1af790b2-7ee1-4545-860a-a788eba489b5",
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    "datePublished": "2026-09-15T15:30:07.894Z",
    "dateReserved": "2026-09-15T08:44:39.948Z",
    "dateUpdated": "2026-09-15T15:30:07.894Z",
    "state": "PUBLISHED"
  },
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      "date": "2026-09-16",
      "epss": "0.00272",
      "percentile": "0.19615"
    },
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  }
}



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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

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.


Detection rules are retrieved from Rulezet.


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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.