Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Fulgur, an HTML/CSS-to-PDF converter, is vulnerable to denial of service in versions before 0.19.0. An attacker who can submit HTML/CSS to a fulgur-based service can use a very small payload with an oversized CSS height to force an unbounded number of page fragments, exhausting CPU and memory. Upgrade to fulgur 0.19.0, which caps the number of pages and sanitizes non-finite heights.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 7.5 | High | 3.1 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0061, the 49th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 14:24 UTC First seen by agentprime
- 31 Oct 2026, 14:24 UTC Confirmed by OSV