Vulnerability-Lookup

CVE-2026-48834 (GCVE-0-2026-48834)

Vulnerability from cvelistv5 – Published: 2026-08-05 15:07 – Updated: 2026-08-06 14:35

Title

Apache Answer: Denial of service via crafted Accept-Language header parsing

Summary

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer. This issue affects Apache Answer: through 2.0.1. Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator (v2.0.3)

CWE

CWE-400 - Uncontrolled Resource Consumption

Assigner

apache

References

2 references

URL	Tags
https://lists.apache.org/thread/0yg5smwnbrhqs55m5…	vendor-advisory
http://www.openwall.com/lists/oss-security/2026/08/05/9

Impacted products

1 product

Vendor	Product	Version
Apache Software Foundation	Apache Answer	Affected: 0 , ≤ 2.0.1 (semver)

Credits

tonghuaroot

Show details on NVD website

JSON

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GHSA-9MXC-X85J-V2WC

Vulnerability from github – Published: 2026-08-05 18:31 – Updated: 2026-08-06 15:32

Details

Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer.

This issue affects Apache Answer: through 2.0.1.

Unauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing. Users are recommended to upgrade to version 2.0.2, which fixes the issue.

Severity

7.5 (High)


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

Show details on source website

JSON

To clipboard

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  "affected": [],
  "aliases": [
    "CVE-2026-48834"
  ],
  "database_specific": {
    "cwe_ids": [
      "CWE-400"
    ],
    "github_reviewed": false,
    "github_reviewed_at": null,
    "nvd_published_at": "2026-08-05T16:16:56Z",
    "severity": "HIGH"
  },
  "details": "Improper Handling of Length Parameter Inconsistency vulnerability in Apache Answer.\n\nThis issue affects Apache Answer: through 2.0.1.\n\nUnauthenticated attackers can cause a denial of service via a specially crafted Accept-Language header that triggers excessive CPU consumption during parsing.\nUsers are recommended to upgrade to version 2.0.2, which fixes the issue.",
  "id": "GHSA-9mxc-x85j-v2wc",
  "modified": "2026-08-06T15:32:33Z",
  "published": "2026-08-05T18:31:35Z",
  "references": [
    {
      "type": "ADVISORY",
      "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-48834"
    },
    {
      "type": "WEB",
      "url": "https://lists.apache.org/thread/0yg5smwnbrhqs55m5h61gn42mcs8s95p"
    },
    {
      "type": "WEB",
      "url": "http://www.openwall.com/lists/oss-security/2026/08/05/9"
    }
  ],
  "schema_version": "1.4.0",
  "severity": [
    {
      "score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
      "type": "CVSS_V3"
    }
  ]
}

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.

Action not permitted

CVE-2026-48834 (GCVE-0-2026-48834)

GHSA-9MXC-X85J-V2WC

Tags

Sightings

Nomenclature