CVE-2025-68616
Prior to version 68.0, a server-side request forgery (SSRF) protection bypass exists in WeasyPrint's `default_url_fetcher`.
Does this matter?
High impact if exploited, but EPSS currently rates exploitation as unlikely (0.67%). Schedule it in the normal patch cycle and watch for a rise in EPSS or a public exploit.
Description
WeasyPrint helps web developers to create PDF documents. Prior to version 68.0, a server-side request forgery (SSRF) protection bypass exists in WeasyPrint's `default_url_fetcher`. The vulnerability allows attackers to access internal network resources (such as `localhost` services or cloud metadata endpoints) even when a developer has implemented a custom `url_fetcher` to block such access. This occurs because the underlying `urllib` library follows HTTP redirects automatically without re-validating the new destination against the developer's security policy. Version 68.0 contains a patch for the issue.
- CVSS 3.1
- 7.5 HIGHCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
- EPSS
- 0.67% probability · 50th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-601, CWE-918
- Affected
- kozea/weasyprint
- Source
- security-advisories@github.com
References
- https://github.com/Kozea/WeasyPrint/commit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565Patch
- https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmvExploit, Third Party Advisory
- https://access.redhat.com/security/cve/CVE-2025-68616
- https://bugzilla.redhat.com/show_bug.cgi?id=2430858
- https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmvExploit, Third Party Advisory
- https://security.access.redhat.com/data/csaf/v2/vex/2025/cve-2025-68616.json
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.