CVE-2026-56154

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Source
https://cve.org/CVERecord?id=CVE-2026-56154
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56154.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-56154
Aliases
Downstream
ALPINE (1)
ALSA (3)
AZL (1)
BELL (1)
CLSA (13)
DEBIAN (1)
ECHO (1)
MGASA (1)
MINI (1)
OESA (4)
RHSA (1)
RLSA (3)
ROOT (1)
SUSE (4)
UBUNTU (1)
Related
ALSA (3)
SUSE (4)
Published
2026-10-01T16:03:52Z
Modified
2026-11-05T21:32:23Z
Severity
  • 9.8 (Critical) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS Calculator
Summary
Apache HTTP Server: mod_rewrite use-after-free via %{LA-U:HTTP:...}
Details

Use After Free vulnerability in Apache HTTP Server's mod_rewrite when using lookahead (%{LA-U:HTTP:...})

This issue affects Apache HTTP Server: from 2.4.0 through 2.4.68.

Database specific 
{
    "cna_assigner": "apache",
    "cwe_ids": [
        "CWE-416"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/56xxx/CVE-2026-56154.json",
    "unresolved_ranges": [
        {
            "extracted_events": [
                {
                    "range": [
                        {
                            "introduced": "2.4.0"
                        },
                        {
                            "last_affected": "2.4.68"
                        }
                    ],
                    "source": "AFFECTED_FIELD",
                    "strategy": "StandardRange"
                }
            ]
        }
    ]
}
References

Affected packages

Git / github.com/apache/httpd

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpd
Events
Introduced
da5873e80d6eee7a0838793bf68f1d0254745fbb
Fixed
1e06e9860794ce39605b79a0a787abfe084e5677
Database specific
Show details 
{
    "extracted_events": [
        {
            "cpe": "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
            "range": [
                {
                    "introduced": "2.4.0"
                },
                {
                    "fixed": "2.4.69"
                }
            ],
            "source": "CPE_RANGE"
        }
    ]
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-56154.json"