CVE-2026-49452

A flaw was found in WeasyPrint, a tool designed to create PDF documents from web content. When processing untrusted HTML with presentational hints enabled, WeasyPrint embeds unescaped HTML attribute values directly into CSS declarations. This vulnerability allows a remote attacker to inject...

CVE-2026-49452 WeasyPrint: CSS Injection via Presentational Hints

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/init.py when presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...

CVE-2026-49452

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/init.py when presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...

CVE-2026-49452

In weasyprint/css/__init__.py, the background HTML attribute is interpolated unescaped into background-image:url({element.get("background")}) and parsed by tinycss2.parse_blocks_contents(). A PoC () demonstrates CSS injection and SSRF against cloud metadata endpoints. Affected only when presentat...

CVE-2026-49452 WeasyPrint: CSS Injection via Presentational Hints

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/init.py when presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...

CVE-2026-49452 WeasyPrint: CSS Injection via Presentational Hints

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/init.py when presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...

EUVD-2026-61143

WeasyPrint helps web developers to create PDF documents. Prior to 69.0, WeasyPrint embeds unescaped HTML presentational-hint attribute values into CSS in weasyprint/css/init.py when presentationalhints=True. The background attribute is inserted into a background-image:url declaration and parsed b...

Security update for python-weasyprint (moderate)

openSUSE Security Update: Security update for python-weasyprint Announcement ID: openSUSE-SU-2026:0251-1 Rating: moderate References: 1270401 Cross-References: CVE-2026-49452 CVSS scores: CVE-2026-49452 SUSE: 6.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N Affected Products: openSUSE Backports...

openSUSE 16 Security Update : python-weasyprint (openSUSE-SU-2026:21364-1)

The remote openSUSE 16 host has a package installed that is affected by a vulnerability as referenced in the openSUSE- SU-2026:21364-1 advisory. Changes in python-weasyprint: - CVE-2026-49452: CSS Injection via Presentational Hints bsc1270401 Tenable has extracted the preceding description block...

OPENSUSE-SU-2026:21364-1 Security update for python-weasyprint

This update for python-weasyprint fixes the following issues: Changes in python-weasyprint: - CVE-2026-49452: CSS Injection via Presentational Hints bsc1270401...

WeasyPrint has CSS Injection via Presentational Hints

SummaryA CSS injection issue exists in WeasyPrint when HTML presentational hints are enabled. Unescaped attribute values are embedded into CSS, allowing injection of arbitrary CSS declarations. This affects applications processing untrusted HTML input. DetailsFile: weasyprint/css/init.pyThe...

PYSEC-2026-3412 WeasyPrint has CSS Injection via Presentational Hints

Summary A CSS injection issue exists in WeasyPrint when HTML presentational hints are enabled. Unescaped attribute values are embedded into CSS, allowing injection of arbitrary CSS declarations. This affects applications processing untrusted HTML input. Details File: weasyprint/css/init.py The...

PT-2026-60023

Summary A CSS injection issue exists in WeasyPrint when HTML presentational hints are enabled. Unescaped attribute values are embedded into CSS, allowing injection of arbitrary CSS declarations. This affects applications processing untrusted HTML input. Details File: weasyprint/css/ init .py The...

GHSA-JHHC-3HCP-QHM5 WeasyPrint has CSS Injection via Presentational Hints

Summary A CSS injection issue exists in WeasyPrint when HTML presentational hints are enabled. Unescaped attribute values are embedded into CSS, allowing injection of arbitrary CSS declarations. This affects applications processing untrusted HTML input. Details File: weasyprint/css/init.py The...

WeasyPrint has CSS Injection via Presentational Hints

Summary A CSS injection issue exists in WeasyPrint when HTML presentational hints are enabled. Unescaped attribute values are embedded into CSS, allowing injection of arbitrary CSS declarations. This affects applications processing untrusted HTML input. Details File: weasyprint/css/init.py The...

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

Overview weasyprint is a The Awesome Document Factory Affected versions of this package are vulnerable to Improper Neutralization of Special Elements in Output Used by a Downstream Component 'Injection' in the processing of presentational hints when unescaped attribute values are embedded into CS...

Avoiding <img> layout shifts: aspect-ratio vs width & height attributes

By default, an takes up zero space until the browser loads enough of the image to know its dimensions: &origin=source&to=/c/senna-d1c8a036.jpg When you run the demo, you'll see the immediately. Then, after a few seconds, this paragraph and subsequent page content shifts downwards to make room for...