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4 vulnerabilities found for webob by pylonsproject
CVE-2026-44889 (GCVE-0-2026-44889)
Vulnerability from nvd – Published: 2026-06-22 21:30 – Updated: 2026-06-23 15:05
VLAI
Title
WebOb: Location header normalization during redirect leads to open redirect
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Pylons/webob/security/advisori… | x_refsource_CONFIRM |
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CVE-2024-42353 (GCVE-0-2024-42353)
Vulnerability from nvd – Published: 2024-08-14 20:12 – Updated: 2024-08-15 14:04
VLAI
Title
WebOb's location header normalization during redirect leads to open redirect
Summary
WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Pylons/webob/security/advisori… | x_refsource_CONFIRM |
| https://github.com/Pylons/webob/commit/f689bcf4f0… | x_refsource_MISC |
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CVE-2026-44889 (GCVE-0-2026-44889)
Vulnerability from cvelistv5 – Published: 2026-06-22 21:30 – Updated: 2026-06-23 15:05
VLAI
Title
WebOb: Location header normalization during redirect leads to open redirect
Summary
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.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/Pylons/webob/security/advisori… | x_refsource_CONFIRM |
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CVE-2024-42353 (GCVE-0-2024-42353)
Vulnerability from cvelistv5 – Published: 2024-08-14 20:12 – Updated: 2024-08-15 14:04
VLAI
Title
WebOb's location header normalization during redirect leads to open redirect
Summary
WebOb provides objects for HTTP requests and responses. When WebOb normalizes the HTTP Location header to include the request hostname, it does so by parsing the URL that the user is to be redirected to with Python's urlparse, and joining it to the base URL. `urlparse` however treats a `//` at the start of a string as a URI without a scheme, and then treats the next part as the hostname. `urljoin` will then use that hostname from the second part as the hostname replacing the original one from the request. This vulnerability is patched in WebOb version 1.8.8.
Severity
6.1 (Medium)
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
- CWE-601 - URL Redirection to Untrusted Site ('Open Redirect')
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/Pylons/webob/security/advisori… | x_refsource_CONFIRM |
| https://github.com/Pylons/webob/commit/f689bcf4f0… | x_refsource_MISC |
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