CVE-2021-26691

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Source
https://cve.org/CVERecord?id=CVE-2021-26691
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26691.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2021-26691
Aliases
Downstream
ALPINE (1)
AZL (1)
BELL (1)
CLSA (1)
DEBIAN (1)
MGASA (1)
OESA (1)
openSUSE (2)
RHSA (3)
RLSA (1)
SUSE (3)
UBUNTU (1)
Related
ALSA (2)
openSUSE (2)
SUSE (3)
Published
2021-06-10T07:15:07Z
Modified
2026-07-08T05:59:38Z
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
[none]
Details

In Apache HTTP Server versions 2.4.0 to 2.4.46 a specially crafted SessionHeader sent by an origin server could cause a heap overflow

Database specific 
{
    "unresolved_ranges":  [
        {
            "cpes":  [
                "cpe:2.3:a:oracle:secure_backup:*:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "fixed":  "18.1.0.1.0"
                }
            ],
            "source":  "CPE_RANGE",
            "vendor_product":  "oracle:secure_backup"
        },
        {
            "cpes":  [
                "cpe:2.3:o:debian:debian_linux:10.0:*:*:*:*:*:*:*",
                "cpe:2.3:o:debian:debian_linux:9.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "9.0"
                },
                {
                    "last_affected":  "9.0"
                },
                {
                    "introduced":  "10.0"
                },
                {
                    "last_affected":  "10.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "debian:debian_linux"
        },
        {
            "cpes":  [
                "cpe:2.3:o:fedoraproject:fedora:34:*:*:*:*:*:*:*",
                "cpe:2.3:o:fedoraproject:fedora:35:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "34"
                },
                {
                    "last_affected":  "34"
                },
                {
                    "introduced":  "35"
                },
                {
                    "last_affected":  "35"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "fedoraproject:fedora"
        },
        {
            "cpes":  [
                "cpe:2.3:a:oracle:enterprise_manager_ops_center:12.4.0.0:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "12.4.0.0"
                },
                {
                    "last_affected":  "12.4.0.0"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "oracle:enterprise_manager_ops_center"
        },
        {
            "cpes":  [
                "cpe:2.3:a:oracle:instantis_enterprisetrack:17.1:*:*:*:*:*:*:*",
                "cpe:2.3:a:oracle:instantis_enterprisetrack:17.2:*:*:*:*:*:*:*",
                "cpe:2.3:a:oracle:instantis_enterprisetrack:17.3:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "17.1"
                },
                {
                    "last_affected":  "17.1"
                },
                {
                    "introduced":  "17.2"
                },
                {
                    "last_affected":  "17.2"
                },
                {
                    "introduced":  "17.3"
                },
                {
                    "last_affected":  "17.3"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "oracle:instantis_enterprisetrack"
        },
        {
            "cpes":  [
                "cpe:2.3:a:oracle:zfs_storage_appliance_kit:8.8:*:*:*:*:*:*:*"
            ],
            "extracted_events":  [
                {
                    "introduced":  "8.8"
                },
                {
                    "last_affected":  "8.8"
                }
            ],
            "source":  "CPE_STRING",
            "vendor_product":  "oracle:zfs_storage_appliance_kit"
        }
    ]
}
References

Affected packages

Git / github.com/apache/httpd

Affected ranges

Type
GIT
Repo
https://github.com/apache/httpd
Events
Introduced
da5873e80d6eee7a0838793bf68f1d0254745fbb
Last Affected
8064ccc50bffe86ad464246b9bfac7d78d7dbc1f
Database specific
Show details 
{
    "cpe":  "cpe:2.3:a:apache:http_server:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "2.4.0"
        },
        {
            "last_affected":  "2.4.46"
        }
    ],
    "source":  "CPE_RANGE"
}

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2021-26691.json"