CVE-2026-27742 (GCVE-0-2026-27742)

Vulnerability from cvelistv5 – Published: 2026-02-23 21:58 – Updated: 2026-02-23 22:00
VLAI?
Title
Bludit <= 3.16.2 Stored XSS in Post Content
Summary
Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim’s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user’s privileges.
Severity ?
5.1 (Medium)
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
5.4 (Medium)
CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N
CWE
  • CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')
Assigner
References
Impacted products
Vendor Product Version
Bludit Bludit Affected: 0 , ≤ 3.16.2 (semver)
Create a notification for this product.
Credits
Catalin Iovita (@catalin-iovita) Beatriz Fresno Naumova
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      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Bludit",
          "repo": "https://github.com/bludit/bludit",
          "vendor": "Bludit",
          "versions": [
            {
              "lessThanOrEqual": "3.16.2",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Catalin Iovita (@catalin-iovita)"
        },
        {
          "lang": "en",
          "type": "finder",
          "value": "Beatriz Fresno Naumova"
        }
      ],
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            }
          ],
          "value": "Bludit version 3.16.2 contains a stored cross-site scripting (XSS) vulnerability in the post content functionality. The application performs client-side sanitation of content input but does not enforce equivalent sanitation on the server side. An authenticated user can inject arbitrary JavaScript into the content field of a post, which is stored and later rendered to other users without proper output encoding. When viewed, the injected script executes in the context of the victim\u2019s browser, allowing session hijacking, credential theft, content manipulation, or other actions within the user\u2019s privileges."
        }
      ],
      "metrics": [
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            "Recovery": "NOT_DEFINED",
            "Safety": "NOT_DEFINED",
            "attackComplexity": "LOW",
            "attackRequirements": "NONE",
            "attackVector": "NETWORK",
            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "exploitMaturity": "NOT_DEFINED",
            "privilegesRequired": "LOW",
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            "subAvailabilityImpact": "NONE",
            "subConfidentialityImpact": "LOW",
            "subIntegrityImpact": "LOW",
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            "baseScore": 5.4,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N",
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      "problemTypes": [
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          "descriptions": [
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              "cweId": "CWE-79",
              "description": "CWE-79 Improper Neutralization of Input During Web Page Generation (XSS or \u0027Cross-site Scripting\u0027)",
              "lang": "en",
              "type": "CWE"
            }
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      "providerMetadata": {
        "dateUpdated": "2026-02-23T22:00:05.028Z",
        "orgId": "83251b91-4cc7-4094-a5c7-464a1b83ea10",
        "shortName": "VulnCheck"
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      "references": [
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          "tags": [
            "issue-tracking"
          ],
          "url": "https://github.com/bludit/bludit/issues/1579"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://www.vulncheck.com/advisories/bludit-stored-xss-in-post-content"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Bludit \u003c= 3.16.2 Stored XSS in Post Content",
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    "cveId": "CVE-2026-27742",
    "datePublished": "2026-02-23T21:58:56.535Z",
    "dateReserved": "2026-02-23T21:38:48.841Z",
    "dateUpdated": "2026-02-23T22:00:05.028Z",
    "state": "PUBLISHED"
  },
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  "dataVersion": "5.2",
  "vulnerability-lookup:meta": {
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  }
}


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  • 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.
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