GNU Wget FTP Passive Mode ftp.c ftp_pasv_response_parse IP address server-side request forgery

Summaryinfo

A vulnerability was found in GNU Wget. It has been declared as critical. Affected by this vulnerability is the function ftp_pasv_response_parse of the file ftp.c of the component FTP Passive Mode. The manipulation of the argument IP address results in server-side request forgery. This vulnerability is identified as CVE-2026-15146. The attack can be executed remotely. There is not any exploit available.

Detailsinfo

A vulnerability classified as critical has been found in GNU Wget (version now known). Affected is the function ftp_pasv_response_parse of the file ftp.c of the component FTP Passive Mode. The manipulation of the argument IP Address with an unknown input leads to a server-side request forgery vulnerability. CWE is classifying the issue as CWE-918. The web server receives a URL or similar request from an upstream component and retrieves the contents of this URL, but it does not sufficiently ensure that the request is being sent to the expected destination. This is going to have an impact on confidentiality, integrity, and availability. CVE summarizes:

GNU Wget does not validate the IP address provided by an FTP PASV response while operating in FTP passive mode. A malicious FTP server, or an HTTP server that redirects to an FTP URL, can exploit this behavior to redirect Wget’s data connection to an arbitrary IP address and port. This allows an attacker to forge server-side requests (SSRF) from the machine running Wget, potentially accessing localhost services or internal network resources.

The advisory is available at cgit.git.savannah.gnu.org. This vulnerability is traded as CVE-2026-15146 since 07/08/2026. The exploitability is told to be easy. It is possible to launch the attack remotely. The exploitation doesn't require any form of authentication. Successful exploitation requires user interaction by the victim. Technical details are known, but there is no available exploit. The structure of the vulnerability defines a possible price range of USD $0-$5k at the moment (estimation calculated on 07/10/2026).

There is no information about possible countermeasures known. It may be suggested to replace the affected object with an alternative product.

If you want to get best quality of vulnerability data, you may have to visit VulDB.

Productinfo

Type

• Automation Software

Vendor

• GNU

Name

• Wget

License

• open-source

Website

• Vendor: https://www.gnu.org/

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If you want to get best quality of vulnerability data, you may have to visit VulDB.

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