`fulgur` converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. In versions prior to 0.19.0, a body-direct child whose CSS-resolved height greatly exceeds the page height was sliced into one fragment per page with no upper bound. This is fixed in version 0.19.0. A `MAX_PAGES` cap bounds the slice loop — halting it even for a `+inf` height — and non-finite layout heights are sanitized so they can no longer drive the loop. As a workaround, validate or constrain untrusted CSS (in particular `height` / `vh` on body-level elements) before passing HTML to fulgur.

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Advisories
Source ID Title
Github GHSA Github GHSA GHSA-4rf6-qx84-q9fv Fulgur: Non-painting replaced elements amplify to thousands of blank PDF pages (denial of service)
Fixes

Solution

No solution given by the vendor.


Workaround

No workaround given by the vendor.

History

Fri, 18 Sep 2026 21:30:00 +0000

Type Values Removed Values Added
First Time appeared Fulgur-rs
Fulgur-rs fulgur
Vendors & Products Fulgur-rs
Fulgur-rs fulgur

Fri, 18 Sep 2026 14:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}


Thu, 17 Sep 2026 20:30:00 +0000

Type Values Removed Values Added
Description `fulgur` converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. In versions prior to 0.19.0, a body-direct child whose CSS-resolved height greatly exceeds the page height was sliced into one fragment per page with no upper bound. This is fixed in version 0.19.0. A `MAX_PAGES` cap bounds the slice loop — halting it even for a `+inf` height — and non-finite layout heights are sanitized so they can no longer drive the loop. As a workaround, validate or constrain untrusted CSS (in particular `height` / `vh` on body-level elements) before passing HTML to fulgur.
Title Fulgur: Unbounded page slicing from attacker-controlled CSS height causes denial of service
Weaknesses CWE-400
CWE-835
References
Metrics cvssV3_1

{'score': 7.5, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H'}


Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: GitHub_M

Published:

Updated: 2026-09-17T20:23:12.488Z

Reserved: 2026-07-30T19:56:44.100Z

Link: CVE-2026-68537

cve-icon Vulnrichment

Updated: 2026-09-17T20:23:07.332Z

cve-icon NVD

Status : Received

Published: 2026-09-17T21:17:19.870

Modified: 2026-09-17T21:17:19.870

Link: CVE-2026-68537

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-19T00:15:13Z

Weaknesses