WeasyPrint Vulnerable to Server-Side Request Forgery (SSRF) Protection Bypass via HTTP Redirect

published 2026-01-19 9 mo ago modified 2026-07-15 3 mo ago also EUVD-2025-206301 , GHSA-983w-rhvv-gwmv , PYSEC-2026-2034

cvss: 7.5; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.7%; EPSS 0.7% chance of exploitation in 30 days, percentile 53%
public exploits: 0; none known

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.

Patch / fix

fixed in 2 distros 2 links 1

pypi weasyprint 68.0
kozea weasyprint 68.0

debian opensuse

weasyprint Debian 14 69.0-1

debian advisories DEBIAN-CVE-2025-68616

python-weasyprint openSUSE Tumbleweed 68.0-1.1
python-weasyprint openSUSE Leap 16.0 65.1-bp160.2.1

opensuse advisories openSUSE-SU-2026:10079-1 openSUSE-SU-2026:20069-1

github.com/Kozea/WeasyPrint@b6a14f0 commit

Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

red hat product security vex CVE-2025-68616 updated 2026-11-04 cvss 7.5

WeasyPrint: WeasyPrint Server-Side Request Forgery (SSRF)

Red Hat Ansible Automation Platform 2 ansible-automation-platform-tech-preview/automation-dashboard-rhel9
affected: workaround, no fix available

Red Hat CSAF VEX © Red Hat, Inc., from https://security.access.redhat.com/data/csaf/v2/vex/; changed: reduced to product statuses and remediations. CC BY 4.0 · csaf

CISA SSVC

Exploitation: Proof of concept is public
Automatable: yes
Technical impact: partial
Assessed: 9 mo ago (2026-01-20)

Exploit prediction

0.70% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

github.com https://github.com/Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CISA ADP	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
GitHub	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
NVD	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
OSV	3.1	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Affected packages

ecosystem	package	affected	fixed in
pypi	weasyprint	<68.0	68.0

Affected products

Kozea WeasyPrint
Red Hat Red Hat Ansible Automation Platform 2

Classification

Weakness

CWE-601 URL Redirection to Untrusted Site
CWE-918 Server-Side Request Forgery

References

github.com /Kozea/WeasyPrint/commit/b6a14f0f3f4ce9c0c75c1a2d73cb1c5d43f0e565
web, patch
github.com /Kozea/WeasyPrint/security/advisories/GHSA-983w-rhvv-gwmv
exploit, web, third-party-advisory
access.redhat.com /security/cve/CVE-2025-68616
vdb-entry, web
bugzilla.redhat.com /show_bug.cgi?id=2430858
issue-tracking, web
security.access.redhat.com /data/csaf/v2/vex/2025/cve-2025-68616.json
web
nvd.nist.gov /vuln/detail/CVE-2025-68616
advisory
github.com /Kozea/WeasyPrint
package
pypi.org /project/weasyprint
package
github.com /advisories/GHSA-983w-rhvv-gwmv
advisory

Sources

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

CPEs and fixed versions use Anchore's correction of NVD's data: Added CPE configurations because not yet analyzed by NVD.

Summary