CVE-2026-68539

fulgur: Unbounded string-set value accumulation causes memory/CPU exhaustion (denial of service)

Published Nov 11, 2026 CVSS 3.1 · 7.5 High EPSS < 1% KEV · Not listed
Description
fulgur converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. From version 0.4.4 to before version 0.29.0, the CSS string-set named-string values resolved from a document were accumulated per element with no memory budget, letting a small crafted document amplify into large retained memory (and the CPU to copy it) — results in a denial of service. This issue has been patched in version 0.29.0.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
First Time appeared Fulgur-rs
Fulgur-rs fulgur
Vendors & Products Fulgur-rs
Fulgur-rs fulgur
Type Values Removed Values Added
Description fulgur converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. From version 0.4.4 to before version 0.29.0, the CSS string-set named-string values resolved from a document were accumulated per element with no memory budget, letting a small crafted document amplify into large retained memory (and the CPU to copy it) — results in a denial of service. This issue has been patched in version 0.29.0.
Title fulgur: Unbounded string-set value accumulation causes memory/CPU exhaustion (denial of service)
Weaknesses CWE-400
CWE-770
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'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
GitHub_M
Published
Updated
Nov 12, 2026, 5:54 PM
Reserved
Jul 30, 2026, 7:56 PM
Status
Deferred
Published
Nov 11, 2026, 10:17 PM
Modified
Nov 12, 2026, 6:17 PM