CVE-2026-44889

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Source
https://cve.org/CVERecord?id=CVE-2026-44889
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44889.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-44889
Aliases
Downstream
Related
Published
2026-06-22T21:30:11.789Z
Modified
2026-07-08T08:13:40.048839210Z
Severity
  • 6.1 (Medium) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N CVSS Calculator
Summary
WebOb: Location header normalization during redirect leads to open redirect
Details

WebOb provides objects for HTTP requests and responses. Prior to 1.8.10, the normalization of the HTTP Location header during a redirect is vulnerable to an open redirect: WebOb joins the redirect target to the request URI using Python's urljoin, and since Python 3.10 the underlying urlsplit strips ASCII tab, carriage return, and newline characters before parsing, so a redirect target containing such characters can be reinterpreted as a protocol-relative URL whose authority is an attacker-controlled host. This bypasses the CVE-2024-42353 fix that escaped a leading double slash, allowing an attacker who influences the redirect location to send users to an arbitrary external site instead of the intended one. This vulnerability is fixed in 1.8.10.

Database specific 
{
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/44xxx/CVE-2026-44889.json",
    "cwe_ids": [
        "CWE-601"
    ],
    "cna_assigner": "GitHub_M"
}
References

Affected packages

Git / github.com/pylons/webob

Affected ranges

Type
GIT
Repo
https://github.com/pylons/webob
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
b240857958df492ef71bb00fb4b5365ecd92480a
Database specific 
{
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:pylonsproject:webob:*:*:*:*:*:*:*:*",
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "fixed": "1.8.10"
        }
    ]
}

Affected versions

0.*
0.8
0.8.1
0.8.2
0.8.3
0.8.4
0.8.5
0.9
0.9.1
0.9.2
0.9.3
0.9.4
0.9.5
0.9.6
0.9.6.1
0.9.7
0.9.7.1
0.9.8
1.*
1.0.1
1.0.2
1.0.3
1.0.4
1.0.5
1.0.6
1.0.7
1.0.8
1.1
1.1b2
1.1rc1
1.2
1.2a1
1.2a2
1.2b1
1.2b2
1.2b3
1.2rc1
1.3
1.3.1
1.4
1.5.0a0
1.8.0
1.8.0rc1
1.8.1
1.8.2
1.8.3
1.8.4
1.8.5
1.8.6
1.8.7
1.8.8
1.8.9
v1.*
v1.8.2
v1.8.3

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-44889.json"