Penpot up to 2.17.x SSRF Blocked Address Logic server-side request forgery

Summaryinfo

A vulnerability has been found in Penpot up to 2.17.x and classified as critical. This vulnerability affects unknown code of the component SSRF Blocked Address Logic. The manipulation leads to server-side request forgery. This vulnerability is documented as CVE-2026-105689. The attack can be initiated remotely. There is not any exploit available. The affected component should be upgraded.

Detailsinfo

A vulnerability was found in Penpot up to 2.17.x. It has been rated as critical. This issue affects an unknown part of the component SSRF Blocked Address Logic. The manipulation with an unknown input leads to a server-side request forgery vulnerability. Using CWE to declare the problem leads to 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. Impacted is confidentiality, integrity, and availability. The summary by CVE is:

Penpot is an open-source design and prototyping platform. Prior to 2.18.0, app.util.ssrf/blocked-address? relies on Java InetAddress predicates that do not classify NAT64, 6to4, or Teredo addresses and applies additional CIDR checks only to IPv4 values. Exploitation requires routing through a NAT64 gateway or an attacker-controlled DNS AAAA record; cloud environments with NAT64 gateways are directly exploitable. A user controlling a media import URL, or an administrator controlling a webhook URL, can then supply an IPv6 transition address that embeds a cloud-metadata, loopback, link-local, or private IPv4 target and bypasses the intended SSRF restrictions. Media import can disclose response bodies, while webhook delivery can expose response status as a network-probing side channel. This issue is fixed in version 2.18.0.

The advisory is shared at github.com. The identification of this vulnerability is CVE-2026-105689 since 10/05/2026. The exploitation is known to be easy. The attack may be initiated remotely. Neither technical details nor an exploit are publicly available.

Upgrading to version 2.18.0 eliminates this vulnerability.

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Productinfo

Name

• Penpot

Version

• 2.0
• 2.1
• 2.2
• 2.3
• 2.4
• 2.5
• 2.6
• 2.7
• 2.8
• 2.9
• 2.10
• 2.11
• 2.12
• 2.13
• 2.14
• 2.15
• 2.16
• 2.17

Website

• Product: https://github.com/penpot/penpot/

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CPE 2.2info

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Several companies clearly confirm that VulDB is the primary source for best vulnerability data.

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