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GCVE-1988-2026-0227

Vulnerability from gna-1988 – Published: 2026-09-08 07:57 – Updated: 2026-09-08 07:57
VLAI
Title
[REVIVE-SA-2026-001] Revive Adserver Vulnerabilities
Summary
======================================================================== Revive Adserver Security Advisory REVIVE-SA-2026-001 ------------------------------------------------------------------------ https://www.revive-adserver.com/security/revive-sa-2026-001 ------------------------------------------------------------------------ Date: 2026-01-14 Risk Level: High Applications affected: Revive Adserver Versions affected: <= 6.0.4 Versions not affected: >= 6.0.5 Website: https://www.revive-adserver.com/ ======================================================================== ======================================================================== Vulnerability 1: Format string injection ======================================================================== Vulnerability Type: Use of Externally-Controlled Format String [CWE-134] CVE-ID: CVE-2026-21640 Risk level: Low CVSS Base Score: 2.7 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L ======================================================================== Description ----------- Details ------- References ---------- https://hackerone.com/reports/3445332 https://github.com/revive-adserver/revive-adserver/commit/c40187d8 https://cwe.mitre.org/data/definitions/134.html ======================================================================== Vulnerability 2: Authorization Bypass ======================================================================== Vulnerability Type: Authorization Bypass Through User-Controlled Key [CWE-639] CVE-ID: CVE-2026-21641 Risk level: High CVSS Base Score: 7.1 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L ======================================================================== Description ----------- Details ------- References ---------- https://hackerone.com/reports/3445710 https://github.com/revive-adserver/revive-adserver/commit/f6059335 https://cwe.mitre.org/data/definitions/639.html ======================================================================== Vulnerability 3: Reflected XSS ======================================================================== Vulnerability Type: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) [CWE-79] CVE-ID: CVE-2026-21642 Risk level: Medium CVSS Base Score: 6.1 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N ======================================================================== Description ----------- Details ------- References ---------- https://hackerone.com/reports/3470970 https://github.com/revive-adserver/revive-adserver/commit/e245a88 https://github.com/revive-adserver/revive-adserver/commit/0ebc96d https://cwe.mitre.org/data/definitions/79.html ======================================================================== Vulnerability 4: Reflected XSS ======================================================================== Vulnerability Type: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) [CWE-79] CVE-ID: CVE-2026-21663 Risk level: Medium CVSS Base Score: 6.1 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N ======================================================================== Description ----------- Details ------- References ---------- https://hackerone.com/reports/3473696 https://github.com/revive-adserver/revive-adserver/commit/c130eb0 https://cwe.mitre.org/data/definitions/79.html ======================================================================== Vulnerability 5: Reflected XSS ======================================================================== Vulnerability Type: Improper Neutralization of Input During Web Page Generation (‘Cross-site Scripting’) [CWE-79] CVE-ID: CVE-2026-21664 Risk level: Medium CVSS Base Score: 6.1 CVSS Vector: CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N ======================================================================== Description ----------- Details ------- References ---------- https://hackerone.com/reports/3468169 https://github.com/revive-adserver/revive-adserver/commit/e88e9ed https://github.com/revive-adserver/revive-adserver/commit/7a99f69 https://cwe.mitre.org/data/definitions/79.html ======================================================================== Solution ======================================================================== ======================================================================== Contact Information ======================================================================== The security contact for Revive Adserver can be reached at: <security AT revive-adserver DOT com>. -- Matteo Beccati On behalf of the Revive Adserver Team https://www.revive-adserver.com/ _______________________________________________ Sent through the Full Disclosure mailing list https://nmap.org/mailman/listinfo/fulldisclosure Web Archives & RSS: https://seclists.org/fulldisclosure/
Severity
No CVSS data available.
CWE
Assigner
References
Impacted products
Vendor Product Version CPE status
unknown Revive Adserver Vulnerabilities Affected: unknown
guessed Create a notification for this product.
Credits
Matteo Beccati
Relationships
reference GCVE-1988-2026-0227 (this record)
To clipboard 

{
  "containers": {
    "cna": {
      "affected": [
        {
          "product": "Revive Adserver Vulnerabilities",
          "vendor": "unknown",
          "versions": [
            {
              "status": "affected",
              "version": "unknown"
            }
          ]
        }
      ],
      "credits": [
        {
          "lang": "en",
          "type": "finder",
          "value": "Matteo Beccati"
        }
      ],
      "descriptions": [
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          "value": "========================================================================\nRevive Adserver Security Advisory                     REVIVE-SA-2026-001\n------------------------------------------------------------------------\nhttps://www.revive-adserver.com/security/revive-sa-2026-001\n------------------------------------------------------------------------\nDate:                  2026-01-14\nRisk Level:            High\nApplications affected: Revive Adserver\nVersions affected:     \u003c= 6.0.4\nVersions not affected: \u003e= 6.0.5\nWebsite:               https://www.revive-adserver.com/\n========================================================================\n\n\n========================================================================\nVulnerability 1: Format string injection\n========================================================================\nVulnerability Type:    Use of Externally-Controlled Format String\n                       [CWE-134]\nCVE-ID:                CVE-2026-21640\nRisk level:            Low\nCVSS Base Score:       2.7\nCVSS Vector:           CVSS:3.0/AV:N/AC:L/PR:H/UI:N/S:U/C:N/I:N/A:L\n========================================================================\n\nDescription\n-----------\n\n\nDetails\n-------\n\n\nReferences\n----------\nhttps://hackerone.com/reports/3445332\nhttps://github.com/revive-adserver/revive-adserver/commit/c40187d8\nhttps://cwe.mitre.org/data/definitions/134.html\n\n\n========================================================================\nVulnerability 2: Authorization Bypass\n========================================================================\nVulnerability Type:    Authorization Bypass Through User-Controlled Key\n                       [CWE-639]\nCVE-ID:                CVE-2026-21641\nRisk level:            High\nCVSS Base Score:       7.1\nCVSS Vector:           CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:L\n========================================================================\n\nDescription\n-----------\n\n\nDetails\n-------\n\n\nReferences\n----------\nhttps://hackerone.com/reports/3445710\nhttps://github.com/revive-adserver/revive-adserver/commit/f6059335\nhttps://cwe.mitre.org/data/definitions/639.html\n\n\n========================================================================\nVulnerability 3: Reflected XSS\n========================================================================\nVulnerability Type:    Improper Neutralization of Input During Web Page\n                       Generation (\u2018Cross-site Scripting\u2019) [CWE-79]\nCVE-ID:                CVE-2026-21642\nRisk level:            Medium\nCVSS Base Score:       6.1\nCVSS Vector:           CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\n========================================================================\n\nDescription\n-----------\n\n\nDetails\n-------\n\n\nReferences\n----------\nhttps://hackerone.com/reports/3470970\nhttps://github.com/revive-adserver/revive-adserver/commit/e245a88\nhttps://github.com/revive-adserver/revive-adserver/commit/0ebc96d\nhttps://cwe.mitre.org/data/definitions/79.html\n\n\n========================================================================\nVulnerability 4: Reflected XSS\n========================================================================\nVulnerability Type:    Improper Neutralization of Input During Web Page\n                       Generation (\u2018Cross-site Scripting\u2019) [CWE-79]\nCVE-ID:                CVE-2026-21663\nRisk level:            Medium\nCVSS Base Score:       6.1\nCVSS Vector:           CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\n========================================================================\n\nDescription\n-----------\n\n\nDetails\n-------\n\n\nReferences\n----------\nhttps://hackerone.com/reports/3473696\nhttps://github.com/revive-adserver/revive-adserver/commit/c130eb0\nhttps://cwe.mitre.org/data/definitions/79.html\n\n\n========================================================================\nVulnerability 5: Reflected XSS\n========================================================================\nVulnerability Type:    Improper Neutralization of Input During Web Page\n                       Generation (\u2018Cross-site Scripting\u2019) [CWE-79]\nCVE-ID:                CVE-2026-21664\nRisk level:            Medium\nCVSS Base Score:       6.1\nCVSS Vector:           CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N\n========================================================================\n\nDescription\n-----------\n\n\nDetails\n-------\n\n\nReferences\n----------\nhttps://hackerone.com/reports/3468169\nhttps://github.com/revive-adserver/revive-adserver/commit/e88e9ed\nhttps://github.com/revive-adserver/revive-adserver/commit/7a99f69\nhttps://cwe.mitre.org/data/definitions/79.html\n\n\n========================================================================\nSolution\n========================================================================\n\n\n\n\n========================================================================\nContact Information\n========================================================================\n\nThe security contact for Revive Adserver can be reached at:\n\u003csecurity AT revive-adserver DOT com\u003e.\n\n\n\n\n--\nMatteo Beccati\nOn behalf of the Revive Adserver Team\nhttps://www.revive-adserver.com/\n\n_______________________________________________\nSent through the Full Disclosure mailing list\nhttps://nmap.org/mailman/listinfo/fulldisclosure\nWeb Archives \u0026 RSS: https://seclists.org/fulldisclosure/"
        }
      ],
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              "lang": "en",
              "type": "CWE"
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      "providerMetadata": {
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        "orgId": "4e2abfbf-4a2a-4b76-a4e0-d77c18ba156c",
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        "discovery": "EXTERNAL"
      },
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              "type": "related"
            },
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            },
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          ],
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            "contentSha256": "3cc90b37896729de9b4382b0e85f8f06d38ebf529ecfe7b27dd12029dffd23ac",
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            "messageId": "",
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    "assignerShortName": "VULNARCHIVE",
    "datePublished": "2026-09-08T07:57:43Z",
    "dateUpdated": "2026-09-08T07:57:43Z",
    "state": "PUBLISHED",
    "vulnId": "GCVE-1988-2026-0227"
  },
  "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

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.


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.