Is CVE-2026-68538 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-68538 being exploited in the wild.

How severe is CVE-2026-68538?

High severity, with a CVSS score of 7.5, published 11 November 2026.

Which products and versions are affected?

Fulgur-Rs Fulgur 0.15.0 to before 0.27.0.

Is there a fix for CVE-2026-68538?

Yes: fixed in 0.27.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-68538 attacked?

It is attacked over the network, in a software library.

Am I affected by CVE-2026-68538?

Check whether you run Fulgur-Rs Fulgur at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-68538: fulgur unbounded CSS counters expansion in generated content

CVE-2026-68538 · Severity: high · CVSS 7.5 · Published 2026-11-11

fulgur is a library that converts HTML and CSS into PDF documents, often used by services that process user-supplied input from multiple customers. An attacker can submit specially crafted HTML/CSS to a fulgur-based conversion service to cause the server to exhaust CPU and memory resources, resulting in a denial of service that impacts the service and all co-hosted customers.

Technologies: Fulgur-Rs Fulgur. Vendors: Fulgur-Rs.

Quick answers

Is CVE-2026-68538 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-68538 being exploited in the wild.
How severe is CVE-2026-68538?: High severity, with a CVSS score of 7.5, published 11 November 2026.
Which products and versions are affected?: Fulgur-Rs Fulgur 0.15.0 to before 0.27.0.
Is there a fix for CVE-2026-68538?: Yes: fixed in 0.27.0. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-68538 attacked?: It is attacked over the network, in a software library.
Am I affected by CVE-2026-68538?: Check whether you run Fulgur-Rs Fulgur at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

Fixed in: 0.27.0

Technical details

The vulnerability exists in fulgur's handling of the CSS counters(name, sep) function in generated content. The expansion of these counters was neither bounded in size for a single expansion nor in aggregate work across an element tree, allowing an attacker to trigger unbounded resource consumption. An attacker with the ability to submit HTML/CSS to a fulgur conversion service can trigger CPU and memory exhaustion with a trivial payload, and the fix applies resource limits to counter expansion.

Affected products

fulgur-rs fulgur 0.15.0 to before 0.27.0

Timeline

2026-11-11: disclosed
2026-07-04: patched

References

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