Vulnerability-Lookup

ubuntu-cve-2026-58156

Vulnerability from osv_ubuntu

Published

2026-07-29 09:16

Modified

2026-08-06 00:20

Summary

Details

Apache Traffic Server mis-parses ports in URLs and userinfo, allowing port-based access-control bypass. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.

Severity

4.9 (Medium)


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

6.3 (Medium)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-58156	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-58156	REPORT
	https://lists.apache.org/thread/5prl9glcm9g2swnq9…	REPORT

JSON

To clipboard

{
  "affected": [
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "5.3.0-2ubuntu2"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "5.3.0-2ubuntu2"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:16.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@5.3.0-2ubuntu2?arch=source\u0026distro=xenial"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "5.3.0-2ubuntu1",
        "5.3.0-2ubuntu2"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "7.1.2+ds-3"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "7.1.2+ds-3"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:18.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@7.1.2+ds-3?arch=source\u0026distro=bionic"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "7.0.0-5",
        "7.1.2+ds-2",
        "7.1.2+ds-2build1",
        "7.1.2+ds-3"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "8.0.5+ds-3ubuntu0.1~esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:20.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@8.0.5+ds-3ubuntu0.1~esm1?arch=source\u0026distro=esm-apps/focal"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.0.5+ds-1",
        "8.0.5+ds-2",
        "8.0.5+ds-2build1",
        "8.0.5+ds-2ubuntu1",
        "8.0.5+ds-3",
        "8.0.5+ds-3ubuntu0.1~esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "9.1.1+ds-2ubuntu0.1+esm1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "9.1.1+ds-2ubuntu0.1+esm1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:Pro:22.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@9.1.1+ds-2ubuntu0.1+esm1?arch=source\u0026distro=esm-apps/jammy"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "8.1.1+ds-1.1",
        "9.1.1+ds-2build1",
        "9.1.1+ds-2ubuntu0.1~esm1",
        "9.1.1+ds-2ubuntu0.1",
        "9.1.1+ds-2ubuntu0.1+esm1"
      ]
    },
    {
      "ecosystem_specific": {
        "binaries": [
          {
            "binary_name": "trafficserver",
            "binary_version": "9.2.3+ds-1+deb12u1ubuntu0.1"
          },
          {
            "binary_name": "trafficserver-experimental-plugins",
            "binary_version": "9.2.3+ds-1+deb12u1ubuntu0.1"
          }
        ]
      },
      "package": {
        "ecosystem": "Ubuntu:24.04:LTS",
        "name": "trafficserver",
        "purl": "pkg:deb/ubuntu/trafficserver@9.2.3+ds-1+deb12u1ubuntu0.1?arch=source\u0026distro=noble"
      },
      "ranges": [
        {
          "events": [
            {
              "introduced": "0"
            }
          ],
          "type": "ECOSYSTEM"
        }
      ],
      "versions": [
        "9.2.1+ds-1build1",
        "9.2.2+ds-1",
        "9.2.3+ds-1",
        "9.2.3+ds-1+deb12u1",
        "9.2.3+ds-1+deb12u1build1",
        "9.2.3+ds-1+deb12u1build3",
        "9.2.3+ds-1+deb12u1build4",
        "9.2.3+ds-1+deb12u1ubuntu0.1"
      ]
    }
  ],
  "aliases": [],
  "details": "Apache Traffic Server mis-parses ports in URLs and userinfo, allowing port-based access-control bypass. This issue affects Apache Traffic Server: from 8.0.0 through 8.1.9, from 9.0.0 through 9.2.14, from 10.0.0 through 10.1.3. Users are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.",
  "id": "UBUNTU-CVE-2026-58156",
  "modified": "2026-08-06T00:20:56Z",
  "published": "2026-07-29T09:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-58156"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-58156"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:H/PR:L/UI:N/S:C/C:L/I:L/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:L/SI:L/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-58156"
  ]
}

CVE-2026-58156 (GCVE-0-2026-58156)

Vulnerability from cvelistv5 – Published: 2026-07-29 08:25 – Updated: 2026-07-29 12:17

Title

Apache Traffic Server: URL and port parsing errors allow access-control bypass

Summary

Severity

4.9 (Medium)


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

6.3 (Medium)


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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-29 12:17 UTC

CWE

CWE-863 - Incorrect Authorization

Assigner

apache mitre root

References

1 reference

URL	Tags
https://lists.apache.org/thread/5prl9glcm9g2swnq9…	vendor-advisory

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Traffic Server	Affected: 8.0.0 , ≤ 8.1.9 (semver) Affected: 9.0.0 , ≤ 9.2.14 (semver) Affected: 10.0.0 , ≤ 10.1.3 (semver)

Credits

Apache Community Omkhar Arasaratnam

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2026-58156",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2026-07-29T12:17:07.333380Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2026-07-29T12:17:15.486Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "defaultStatus": "unaffected",
          "product": "Apache Traffic Server",
          "vendor": "Apache Software Foundation",
          "versions": [
            {
              "lessThanOrEqual": "8.1.9",
              "status": "affected",
              "version": "8.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "9.2.14",
              "status": "affected",
              "version": "9.0.0",
              "versionType": "semver"
            },
            {
              "lessThanOrEqual": "10.1.3",
              "status": "affected",
              "version": "10.0.0",
              "versionType": "semver"
            }
          ]
        }
      ],
      "credits": [
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          "lang": "en",
          "type": "reporter",
          "value": "Apache Community"
        },
        {
          "lang": "en",
          "type": "reporter",
          "value": "Omkhar Arasaratnam"
        }
      ],
      "descriptions": [
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          "lang": "en",
          "supportingMedia": [
            {
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              "type": "text/html",
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        }
      ],
      "metrics": [
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            "content": {
              "text": "moderate"
            },
            "type": "Textual description of severity"
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        },
        {
          "cvssV3_1": {
            "attackComplexity": "HIGH",
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            "confidentialityImpact": "LOW",
            "integrityImpact": "LOW",
            "privilegesRequired": "LOW",
            "scope": "CHANGED",
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            "privilegesRequired": "NONE",
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            "valueDensity": "NOT_DEFINED",
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    "datePublished": "2026-07-29T08:25:12.013Z",
    "dateReserved": "2026-06-29T15:46:44.742Z",
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    "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.

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.