Vulnerability-Lookup

GHSA-V3R6-6788-V9XH

Vulnerability from github – Published: 2026-04-15 18:31 – Updated: 2026-04-15 18:31

Details

This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.

Severity

5.3 (Medium)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-20152"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-305"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-04-15T17:17:02Z",
    "severity": "MODERATE"
  },
  "details": "A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\n\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.",
  "id": "GHSA-v3r6-6788-v9xh",
  "modified": "2026-04-15T18:31:58Z",
  "published": "2026-04-15T18:31:57Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-20152"
    },
    {
      "type": "WEB",
      "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
      "type": "CVSS_V3"
    }
  ]
}

CVE-2026-20152 (GCVE-0-2026-20152)

Vulnerability from cvelistv5 – Published: 2026-04-15 16:03 – Updated: 2026-04-16 19:05

Title

Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability

Summary

A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements. This vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device.

Severity

5.3 (Medium)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-04-15 16:47 UTC

CWE

CWE-305 - Authentication Bypass by Primary Weakness

Assigner

cisco CNA under the mitre root

CNA scorecard C 66/100 over 395 records in the last 180 days details

References

1 reference

URL	Tags
https://sec.cloudapps.cisco.com/security/center/c…

Impacted products

1 product

Vendor	Product	Version
Cisco	Cisco Secure Web Appliance	Affected: 11.8.0-453 Affected: 12.5.3-002 Affected: 12.0.3-007 Affected: 12.0.3-005 Affected: 14.1.0-032 Affected: 14.1.0-047 Affected: 14.1.0-041 Affected: 12.0.4-002 Affected: 14.0.2-012 Affected: 11.8.0-414 Affected: 12.0.1-268 Affected: 11.8.1-023 Affected: 11.8.3-021 Affected: 11.8.3-018 Affected: 12.5.1-011 Affected: 11.8.4-004 Affected: 12.5.2-007 Affected: 12.5.2-011 Affected: 14.5.0-498 Affected: 12.5.4-005 Affected: 12.5.4-011 Affected: 12.0.5-011 Affected: 14.0.3-014 Affected: 12.5.5-004 Affected: 12.5.5-005 Affected: 12.5.5-008 Affected: 14.0.4-005 Affected: 14.5.1-008 Affected: 14.5.1-016 Affected: 15.0.0-355 Affected: 15.0.0-322 Affected: 12.5.6-008 Affected: 15.1.0-287 Affected: 14.5.2-011 Affected: 15.2.0-116 Affected: 14.0.5-007 Affected: 15.2.0-164 Affected: 14.5.1-510 Affected: 12.0.2-012 Affected: 12.0.2-004 Affected: 14.5.1-607 Affected: 14.5.3-033 Affected: 15.0.1-004 Affected: 15.2.1-011 Affected: 14.5.0-673 Affected: 14.5.0-537 Affected: 12.0.1-334 Affected: 14.0.1-503 Affected: 14.0.1-053 Affected: 11.8.0-429 Affected: 14.0.1-040 Affected: 14.0.1-014 Affected: 12.5.1-043 Affected: 15.2.2-009 Affected: 15.2.3-007 Affected: 15.2.4-022 Affected: 15.2.5-011 Affected: 15.2.5-013 Affected: 14.6.0-108

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-20152",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-04-15T16:47:46.764093Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-04-15T16:56:35.035Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unknown",
          "product": "Cisco Secure Web Appliance",
          "vendor": "Cisco",
          "versions": [
            {
              "status": "affected",
              "version": "11.8.0-453"
            },
            {
              "status": "affected",
              "version": "12.5.3-002"
            },
            {
              "status": "affected",
              "version": "12.0.3-007"
            },
            {
              "status": "affected",
              "version": "12.0.3-005"
            },
            {
              "status": "affected",
              "version": "14.1.0-032"
            },
            {
              "status": "affected",
              "version": "14.1.0-047"
            },
            {
              "status": "affected",
              "version": "14.1.0-041"
            },
            {
              "status": "affected",
              "version": "12.0.4-002"
            },
            {
              "status": "affected",
              "version": "14.0.2-012"
            },
            {
              "status": "affected",
              "version": "11.8.0-414"
            },
            {
              "status": "affected",
              "version": "12.0.1-268"
            },
            {
              "status": "affected",
              "version": "11.8.1-023"
            },
            {
              "status": "affected",
              "version": "11.8.3-021"
            },
            {
              "status": "affected",
              "version": "11.8.3-018"
            },
            {
              "status": "affected",
              "version": "12.5.1-011"
            },
            {
              "status": "affected",
              "version": "11.8.4-004"
            },
            {
              "status": "affected",
              "version": "12.5.2-007"
            },
            {
              "status": "affected",
              "version": "12.5.2-011"
            },
            {
              "status": "affected",
              "version": "14.5.0-498"
            },
            {
              "status": "affected",
              "version": "12.5.4-005"
            },
            {
              "status": "affected",
              "version": "12.5.4-011"
            },
            {
              "status": "affected",
              "version": "12.0.5-011"
            },
            {
              "status": "affected",
              "version": "14.0.3-014"
            },
            {
              "status": "affected",
              "version": "12.5.5-004"
            },
            {
              "status": "affected",
              "version": "12.5.5-005"
            },
            {
              "status": "affected",
              "version": "12.5.5-008"
            },
            {
              "status": "affected",
              "version": "14.0.4-005"
            },
            {
              "status": "affected",
              "version": "14.5.1-008"
            },
            {
              "status": "affected",
              "version": "14.5.1-016"
            },
            {
              "status": "affected",
              "version": "15.0.0-355"
            },
            {
              "status": "affected",
              "version": "15.0.0-322"
            },
            {
              "status": "affected",
              "version": "12.5.6-008"
            },
            {
              "status": "affected",
              "version": "15.1.0-287"
            },
            {
              "status": "affected",
              "version": "14.5.2-011"
            },
            {
              "status": "affected",
              "version": "15.2.0-116"
            },
            {
              "status": "affected",
              "version": "14.0.5-007"
            },
            {
              "status": "affected",
              "version": "15.2.0-164"
            },
            {
              "status": "affected",
              "version": "14.5.1-510"
            },
            {
              "status": "affected",
              "version": "12.0.2-012"
            },
            {
              "status": "affected",
              "version": "12.0.2-004"
            },
            {
              "status": "affected",
              "version": "14.5.1-607"
            },
            {
              "status": "affected",
              "version": "14.5.3-033"
            },
            {
              "status": "affected",
              "version": "15.0.1-004"
            },
            {
              "status": "affected",
              "version": "15.2.1-011"
            },
            {
              "status": "affected",
              "version": "14.5.0-673"
            },
            {
              "status": "affected",
              "version": "14.5.0-537"
            },
            {
              "status": "affected",
              "version": "12.0.1-334"
            },
            {
              "status": "affected",
              "version": "14.0.1-503"
            },
            {
              "status": "affected",
              "version": "14.0.1-053"
            },
            {
              "status": "affected",
              "version": "11.8.0-429"
            },
            {
              "status": "affected",
              "version": "14.0.1-040"
            },
            {
              "status": "affected",
              "version": "14.0.1-014"
            },
            {
              "status": "affected",
              "version": "12.5.1-043"
            },
            {
              "status": "affected",
              "version": "15.2.2-009"
            },
            {
              "status": "affected",
              "version": "15.2.3-007"
            },
            {
              "status": "affected",
              "version": "15.2.4-022"
            },
            {
              "status": "affected",
              "version": "15.2.5-011"
            },
            {
              "status": "affected",
              "version": "15.2.5-013"
            },
            {
              "status": "affected",
              "version": "14.6.0-108"
            }
          ]
        }
      ],
      "descriptions": [
        {
          "lang": "en",
          "value": "A vulnerability in the authentication service feature of Cisco AsyncOS Software for Cisco Secure Web Appliance could allow an unauthenticated, remote attacker to bypass authentication policy requirements.\r\n\r\nThis vulnerability is due to improper validation of user-supplied authentication input in HTTP requests. An attacker could exploit this vulnerability by sending HTTP requests that contain specific authentication requests to an affected device. A successful exploit could allow the attacker to bypass policy enforcement on the device. There is no direct impact to the Cisco Secure Web Appliance. However, as a result of exploiting this vulnerability, an attacker could send HTTP requests that should be restricted through the device."
        }
      ],
      "exploits": [
        {
          "lang": "en",
          "value": "The Cisco PSIRT is not aware of any public announcements or malicious use of the vulnerability that is described in this advisory."
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 5.3,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "NONE",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N",
            "version": "3.1"
          },
          "format": "cvssV3_1"
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "cweId": "CWE-305",
              "description": "Authentication Bypass by Primary Weakness",
              "lang": "en",
              "type": "cwe"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2026-04-16T19:05:18.524Z",
        "orgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
        "shortName": "cisco"
      },
      "references": [
        {
          "name": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
          "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-wsa-auth-bypass-6YZkTQhd"
        }
      ],
      "source": {
        "advisory": "cisco-sa-wsa-auth-bypass-6YZkTQhd",
        "defects": [
          "CSCwr20696"
        ],
        "discovery": "EXTERNAL"
      },
      "title": "Cisco Secure Web Appliance Authentication Service Traffic Bypass Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "d1c1063e-7a18-46af-9102-31f8928bc633",
    "assignerShortName": "cisco",
    "cveId": "CVE-2026-20152",
    "datePublished": "2026-04-15T16:03:43.828Z",
    "dateReserved": "2025-10-08T11:59:15.386Z",
    "dateUpdated": "2026-04-16T19:05:18.524Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.2"
}

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.

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

GHSA-V3R6-6788-V9XH

CVE-2026-20152 (GCVE-0-2026-20152)

Tags

Sightings

Nomenclature

Related by attack behaviour