# CVE-2026-68540: fulgur: Quadratic style-list reprocessing during containing-block resolution for absolutely-positioned pseudo-elements causes denial of servicefulgur:

Status: published. Published: 2026-11-11. Updated: 2026-11-11.

fulgur converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. From version 0.6.0 to before version 0.33.0, quadratic style-list reprocessing during containing-block resolution for absolutely-positioned pseudo-elements cause denial of service. This issue has been patched in version 0.33.0.

## Remediation

No remediation reported in collected sources

## Affected products and versions

- fulgur-rs / fulgur: >= 0.6.0, < 0.33.0 (affected). Source: CNA: GitHub_M

## Severity and prioritization

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: CNA: GitHub_M

- CVSS 3.1: 7.5 (high); CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H; source: NVD: security-advisories@github.com

- CISA KEV: No listing in collected sources

- EPSS: Not available

- SSVC: Not available

- Weaknesses: CWE-400, CWE-405

## Exploit evidence

No exploit evidence in collected sources. This is not proof of no exploitation.

## References

- https://github.com/fulgur-rs/fulgur/security/advisories/GHSA-v8x5-rchq-jr47 (CNA: GitHub_M; x_refsource_CONFIRM)

- https://github.com/fulgur-rs/fulgur/pull/602 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/fulgur-rs/fulgur/commit/8fabbca271313c56ef48f1d20d0040e1cf130de5 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/fulgur-rs/fulgur/releases/tag/v0.33.0 (CNA: GitHub_M; x_refsource_MISC)

- https://github.com/fulgur-rs/fulgur/commit/8fabbca271313c56ef48f1d20d0040e1cf130de5 (security-advisories@github.com)

- https://github.com/fulgur-rs/fulgur/pull/602 (security-advisories@github.com)

- https://github.com/fulgur-rs/fulgur/releases/tag/v0.33.0 (security-advisories@github.com)

- https://github.com/fulgur-rs/fulgur/security/advisories/GHSA-v8x5-rchq-jr47 (security-advisories@github.com)

## Provenance

- CNA: GitHub_M: https://www.cve.org/CVERecord?id=CVE-2026-68540; retrieved 2026-11-11; source updated 2026-11-11

- NVD: https://nvd.nist.gov/vuln/detail/CVE-2026-68540; retrieved 2026-11-12; source updated 2026-11-11

Revision: a2915f7792adfd15ad12b276eea37b10c9f1c20e5a482244d33bcd54ed048913

Canonical: https://y2.dev/cve/CVE-2026-68540

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