Vulnerability-Lookup

CVE-2026-58155 (GCVE-0-2026-58155)

Vulnerability from cvelistv5 – Published: 2026-07-29 08:24 – Updated: 2026-07-29 12:19

Title

Apache Traffic Server: Header-name length truncation enables header aliasing and request smuggling

Summary

Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy 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

9.3 (Critical)


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

9.2 (Critical)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-07-29 12:18 UTC

CWE

CWE-444 - Inconsistent Interpretation of HTTP Requests

Assigner

apache mitre root

References

1 reference

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

Impacted products

1 product

Vendor	Product	Version	CPE status
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)	guessed

Credits

Omkhar Arasaratnam

Show details on NVD website

JSON

To clipboard

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FKIE_CVE-2026-58155

Vulnerability from fkie_nvd - Published: 2026-07-29 09:16 - Updated: 2026-08-03 13:40

Severity

9.3 (Critical) - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N

Summary

References

	URL	Tags
	security@apache.org	https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d	Vendor Advisory, Mailing List

Impacted products

Vendor	Product	Version
apache	traffic_server	*
apache	traffic_server	*
apache	traffic_server	*

JSON

To clipboard

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          "providerUrgency": "NOT_DEFINED",
          "subAvailabilityImpact": "NONE",
          "subConfidentialityImpact": "NONE",
          "subIntegrityImpact": "HIGH",
          "userInteraction": "NONE",
          "valueDensity": "NOT_DEFINED",
          "vectorString": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/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",
          "version": "4.0",
          "vulnAvailabilityImpact": "NONE",
          "vulnConfidentialityImpact": "NONE",
          "vulnIntegrityImpact": "HIGH",
          "vulnerabilityResponseEffort": "NOT_DEFINED"
        },
        "source": "security@apache.org",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2026-58155",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2026-07-29T12:18:55.913684Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2026-07-29T09:16:29.877",
  "references": [
    {
      "source": "security@apache.org",
      "tags": [
        "Vendor Advisory",
        "Mailing List"
      ],
      "url": "https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d"
    }
  ],
  "sourceIdentifier": "security@apache.org",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "CWE-444"
        }
      ],
      "source": "security@apache.org",
      "type": "Secondary"
    }
  ]
}

GHSA-9JFM-2XHC-GHXJ

Vulnerability from github – Published: 2026-07-29 09:31 – Updated: 2026-07-29 09:31

Details

Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy 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

9.3 (Critical)


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

9.2 (Critical)


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

Show details on source website

JSON

To clipboard

{
  "affected": [],
  "aliases": [
    "CVE-2026-58155"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-444"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-07-29T09:16:29Z",
    "severity": "CRITICAL"
  },
  "details": "Apache Traffic Server truncates over-long header names, allowing header aliasing, request smuggling, and policy bypass.\n\nThis 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.\n\nUsers are recommended to upgrade to version 9.2.15 or 10.1.4, which fix the issue.",
  "id": "GHSA-9jfm-2xhc-ghxj",
  "modified": "2026-07-29T09:31:30Z",
  "published": "2026-07-29T09:31:30Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-58155"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/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"
    }
  ]
}

ubuntu-cve-2026-58155

Vulnerability from osv_ubuntu

Published

2026-07-29 09:16

Modified

2026-08-06 00:20

Summary

Details

Severity

9.3 (Critical)


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

9.2 (Critical)


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

N/A (UNKNOWN)


                    
                      medium

References

URL

Type

	https://ubuntu.com/security/CVE-2026-58155	REPORT
	https://www.cve.org/CVERecord?id=CVE-2026-58155	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 truncates over-long header names, allowing header aliasing, request smuggling, and policy 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-2026-58155",
  "modified": "2026-08-06T00:20:56Z",
  "published": "2026-07-29T09:16:00Z",
  "references": [
    {
      "type": "REPORT",
      "url": "https://ubuntu.com/security/CVE-2026-58155"
    },
    {
      "type": "REPORT",
      "url": "https://www.cve.org/CVERecord?id=CVE-2026-58155"
    },
    {
      "type": "REPORT",
      "url": "https://lists.apache.org/thread/5prl9glcm9g2swnq9hqxvnokylm1gr6d"
    }
  ],
  "related": [],
  "schema_version": "1.7.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:H/A:N",
      "type": "CVSS_V3"
    },
    {
      "score": "CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:H/VA:N/SC:N/SI:H/SA:N",
      "type": "CVSS_V4"
    },
    {
      "score": "medium",
      "type": "Ubuntu"
    }
  ],
  "upstream": [
    "CVE-2026-58155"
  ]
}

WID-SEC-W-2026-2561

Vulnerability from csaf_certbund - Published: 2026-07-28 22:00 - Updated: 2026-07-29 22:00

Summary

Apache Traffic Server: Mehrere Schwachstellen

Severity

Hoch

Scope

38 vulnerabilities in this advisory, including CVE-2026-58155.

CVE-2026-58155

Known affected: 2 products

Open the full advisory

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.

Action not permitted

CVE-2026-58155 (GCVE-0-2026-58155)

FKIE_CVE-2026-58155

GHSA-9JFM-2XHC-GHXJ

ubuntu-cve-2026-58155

Vulnerability from osv_ubuntu

WID-SEC-W-2026-2561

Tags

Sightings

Nomenclature