CVE-2026-33930

Source
https://cve.org/CVERecord?id=CVE-2026-33930
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33930.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-33930
Downstream
DEBIAN (1)
OESA (3)
UBUNTU (1)
Published
2026-07-29T07:23:54Z
Modified
2026-08-12T03:51:48Z
Severity
  • 8.2 (High) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N CVSS Calculator
Summary
Apache Traffic Server: Buffer overflow via Host field that has a long string value
Details

Apache Traffic Server copies the client Host header into a fixed-size stack buffer without a bound during redirect handling, so an over-long Host header overflows the stack when redirect following is enabled.

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.

Database specific
{
    "cna_assigner":  "apache",
    "cwe_ids":  [
        "CWE-121"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/33xxx/CVE-2026-33930.json",
    "unresolved_ranges":  [
        {
            "extracted_events":  [
                {
                    "introduced":  "8.0.0"
                },
                {
                    "last_affected":  "8.1.9"
                },
                {
                    "introduced":  "9.0.0"
                },
                {
                    "last_affected":  "9.2.14"
                },
                {
                    "introduced":  "10.0.0"
                },
                {
                    "last_affected":  "10.1.3"
                }
            ],
            "source":  "AFFECTED_FIELD"
        },
        {
            "extracted_events":  [
                {
                    "introduced":  "8.0.0"
                },
                {
                    "fixed":  "8.1.9"
                },
                {
                    "introduced":  "9.0.0"
                },
                {
                    "fixed":  "9.2.14"
                },
                {
                    "introduced":  "10.0.0"
                },
                {
                    "fixed":  "10.1.3"
                }
            ],
            "source":  "DESCRIPTION"
        }
    ]
}
References

Affected packages

Git / github.com/apache/trafficserver

Affected ranges

Type
GIT
Repo
https://github.com/apache/trafficserver
Events
Database specific
Show details
{
    "cpe":  "cpe:2.3:a:apache:traffic_server:*:*:*:*:*:*:*:*",
    "extracted_events":  [
        {
            "introduced":  "8.0.0"
        },
        {
            "last_affected":  "8.1.9"
        },
        {
            "introduced":  "9.0.0"
        },
        {
            "fixed":  "9.2.15"
        },
        {
            "introduced":  "10.0.0"
        },
        {
            "fixed":  "10.1.4"
        }
    ],
    "source":  "CPE_RANGE"
}

Affected versions

8.*
8.0.0
8.0.0-rc4
8.0.1
8.0.1-rc0
8.0.2
8.0.2-rc0
8.0.3
8.0.3-rc0
8.0.4
8.0.4-rc0
8.0.5
8.0.6
8.0.6-rc0
8.0.6-rc1
8.1.0
8.1.0-rc0
8.1.1
8.1.1-rc0
8.1.2-rc0
8.1.3
8.1.3-rc0
8.1.3-rc1
8.1.4
8.1.4-rc0
8.1.5
8.1.5-rc0
8.1.6
8.1.6-rc0
8.1.7
8.1.7-rc0
8.1.8
8.1.8-rc0
8.1.9
8.1.9-rc0

Database specific

source
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-33930.json"