Vulnerability-Lookup

GHSA-MXQW-8V8M-QPMF

Vulnerability from github – Published: 2026-06-18 15:32 – Updated: 2026-06-18 15:32

Details

Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.

Severity

5.1 (Medium)


                  
                    CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

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{
  "affected": [],
  "aliases": [
    "CVE-2026-54219"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-79"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-06-18T14:17:30Z",
    "severity": "MODERATE"
  },
  "details": "UBB.threads is vulnerable to Stored XSS via user posts and user profile fields. The application fails to properly sanitize user input, allowing low privileged attackers to inject arbitrary JavaScript that executes in a victim\u0027s browser upon viewing.\n\nBecause vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.",
  "id": "GHSA-mxqw-8v8m-qpmf",
  "modified": "2026-06-18T15:32:02Z",
  "published": "2026-06-18T15:32:02Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-54219"
    },
    {
      "type": "WEB",
      "url": "https://cert.pl/en/posts/2026/06/CVE-2026-54219"
    },
    {
      "type": "WEB",
      "url": "https://www.ubbcentral.com"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X",
      "type": "CVSS_V4"
    }
  ]
}

CVE-2026-54219 (GCVE-0-2026-54219)

Vulnerability from cvelistv5 – Published: 2026-06-18 12:56 – Updated: 2026-06-18 13:31

Title

Stored XSS in UBB.threads

Summary

UBB.threads is vulnerable to Stored XSS via user posts and user profile fields. The application fails to properly sanitize user input, allowing low privileged attackers to inject arbitrary JavaScript that executes in a victim's browser upon viewing. Because vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions.

Severity

5.1 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-79 - Improper Neutralization of Input During Web Page Generation (XSS or 'Cross-site Scripting')

Assigner

CERT-PL

References

2 references

URL	Tags
https://www.ubbcentral.com/	product
https://cert.pl/en/posts/2026/06/CVE-2026-54219	third-party-advisory

Impacted products

1 product

Vendor	Product	Version
UBB Systems	UBB.threads	Affected: 0 , ≤ 7.7.5 (semver)

Date Public

2026-06-18 12:55

Credits

Kamil Szczurowski (Securitum) Michał Wnękowicz (Securitum)

Show details on NVD website

JSON

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{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-54219",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-06-18T13:31:38.865613Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
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        ],
        "providerMetadata": {
          "dateUpdated": "2026-06-18T13:31:59.555Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
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          "defaultStatus": "unknown",
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          "vendor": "UBB Systems",
          "versions": [
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              "lessThanOrEqual": "7.7.5",
              "status": "affected",
              "version": "0",
              "versionType": "semver"
            }
          ]
        }
      ],
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          "lang": "en",
          "type": "finder",
          "value": "Kamil Szczurowski (Securitum)"
        },
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          "lang": "en",
          "type": "finder",
          "value": "Micha\u0142 Wn\u0119kowicz (Securitum)"
        }
      ],
      "datePublic": "2026-06-18T12:55:00.000Z",
      "descriptions": [
        {
          "lang": "en",
          "supportingMedia": [
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              "base64": false,
              "type": "text/html",
              "value": "UBB.threads is vulnerable to Stored XSS via user posts and user profile fields. The application fails to properly sanitize user input, allowing low privileged attackers to inject arbitrary JavaScript that executes in a victim\u0027s browser upon viewing.\u003cbr\u003e\u003cbr\u003eBecause vendor contact attempts were unsuccessful, the vulnerability has only been confirmed in version 7.7.5 but may also affect other versions."
            }
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      "impacts": [
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      "metrics": [
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            "Recovery": "NOT_DEFINED",
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            "baseScore": 5.1,
            "baseSeverity": "MEDIUM",
            "privilegesRequired": "LOW",
            "providerUrgency": "NOT_DEFINED",
            "subAvailabilityImpact": "NONE",
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            "userInteraction": "PASSIVE",
            "valueDensity": "NOT_DEFINED",
            "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:P/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N",
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        "orgId": "4bb8329e-dd38-46c1-aafb-9bf32bcb93c6",
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      },
      "references": [
        {
          "tags": [
            "product"
          ],
          "url": "https://www.ubbcentral.com/"
        },
        {
          "tags": [
            "third-party-advisory"
          ],
          "url": "https://cert.pl/en/posts/2026/06/CVE-2026-54219"
        }
      ],
      "source": {
        "discovery": "EXTERNAL"
      },
      "title": "Stored XSS in UBB.threads",
      "x_generator": {
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  "cveMetadata": {
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    "datePublished": "2026-06-18T12:56:17.425Z",
    "dateReserved": "2026-06-12T11:03:23.916Z",
    "dateUpdated": "2026-06-18T13:31:59.555Z",
    "state": "PUBLISHED"
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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.

Action not permitted

GHSA-MXQW-8V8M-QPMF

CVE-2026-54219 (GCVE-0-2026-54219)

Tags

Sightings

Nomenclature