Vulnerability-Lookup

CVE-2026-11838 (GCVE-0-2026-11838)

Vulnerability from cvelistv5 – Published: 2026-09-09 09:14 – Updated: 2026-09-09 12:51

Title

Improper Authorization in Yordam Informatics' Library Reservation System

Summary

Missing authentication for critical function vulnerability in Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc. Library Reservation System allows Input Data Manipulation. This issue affects Library Reservation System: before v22.2.

Severity

4.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-09 12:50 UTC

CWE

CWE-306 - Missing authentication for critical function

Assigner

TR-CERT mitre root

References

1 reference

URL	Tags
https://siberguvenlik.gov.tr/guvenlik-bildirimler…	government-resource

Impacted products

1 product

Vendor	Product	Version	CPE status
Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc.	Library Reservation System	Affected: 0 , < v22.2 (custom)	guessed

Date Public

2026-09-09 08:53

Credits

Çınar FİDANBOY

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-11838

Vulnerability from fkie_nvd - Published: 2026-09-09 10:17 - Updated: 2026-09-09 15:37

Severity

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

Summary

References

	URL	Tags
	iletisim@usom.gov.tr	https://siberguvenlik.gov.tr/guvenlik-bildirimleri/detay/tr-26-1035

Impacted products

	Vendor	Product	Version

JSON

To clipboard

{
  "affected": [
    {
      "affectedData": [
        {
          "defaultStatus": "unaffected",
          "product": "Library Reservation System",
          "vendor": "Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc.",
          "versions": [
            {
              "lessThan": "v22.2",
              "status": "affected",
              "version": "0",
              "versionType": "custom"
            }
          ]
        }
      ],
      "source": "iletisim@usom.gov.tr"
    }
  ],
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    {
      "lang": "en",
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    }
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        "impactScore": 1.4,
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        "type": "Secondary"
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GHSA-M8QV-W7P3-M7CV

Vulnerability from github – Published: 2026-09-09 12:32 – Updated: 2026-09-09 12:32

Details

This issue affects Library Reservation System: before v22.2.

Severity

4.3 (Medium)


                  
                    CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:N

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-11838"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-306"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-09-09T10:17:03Z",
    "severity": "MODERATE"
  },
  "details": "Missing authentication for critical function vulnerability in Yordam Informatics Technology Consulting, Training, and Electronic Systems Industry and Trade Inc. Library Reservation System allows Input Data Manipulation.\n\nThis issue affects Library Reservation System: before v22.2.",
  "id": "GHSA-m8qv-w7p3-m7cv",
  "modified": "2026-09-09T12:32:10Z",
  "published": "2026-09-09T12:32:09Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-11838"
    },
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      "type": "WEB",
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      "type": "CVSS_V3"
    }
  ]
}

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.

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.

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.

Action not permitted

CVE-2026-11838 (GCVE-0-2026-11838)

FKIE_CVE-2026-11838

GHSA-M8QV-W7P3-M7CV

Tags

Sightings

Nomenclature

Related by attack behaviour