CVE-2026-34355

Published Jun 8, 2026

Last updated a day ago

CVSS high 7.5

Overview

Description: A buffer overflow in mod_proxy_html in Apache HTTP Server 2.4.67 and earlier allows an attack by an untrusted backend. Users are recommended to upgrade to version 2.4.68, which fixes this issue.
Source: security@apache.org
NVD status: Analyzed
Products: http_server

Risk scores

CVSS 3.1

Type: Secondary
Base score: 7.5
Impact score: 3.6
Exploitability score: 3.9
Vector string: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H
Severity: HIGH

Weaknesses

security@apache.org: CWE-122

Hype score: Not currently trending

SIOSセキュリティブログを更新しました。 Apacheの脆弱性(Moderate: CVE-2026-34355, CVE-2026-42535, CVE-2026-43951, CVE-2026-44119, CVE-2026-44186, CVE-2026-49975, Low:複数)と2.4.68リリース #sios_tech #security #vulnerability #セキュリティ #脆弱
@omokazuki
9 Jun 2026
126 Impressions
0 Retweets
2 Likes
1 Bookmark
0 Replies
0 Quotes

Configurations

[
  {
    "nodes": [
      {
        "cpeMatch": [
          {
            "criteria": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "matchCriteriaId": "03F07E89-F9BF-4913-8250-F79447AA6EBD",
            "versionEndExcluding": "2.4.68",
            "versionStartIncluding": "2.4.0",
            "vulnerable": true
          }
        ],
        "negate": false,
        "operator": "OR"
      }
    ]
  }
]

References

Sources include official advisories and independent security research.

Overview

Risk scores

CVSS 3.1

Weaknesses

Social media

Configurations

Related CVEs

References