CVE-2026-68538

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Source
https://cve.org/CVERecord?id=CVE-2026-68538
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68538.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-68538
Aliases
  • GHSA-395p-pj7r-jm42
Published
2026-11-11T22:12:06Z
Modified
2026-11-13T02:47:36Z
Severity
  • 7.5 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H CVSS Calculator
Summary
fulgur: Unbounded counters() expansion in generated content causes memory/CPU exhaustion (denial of service)
Details

fulgur converts untrusted HTML/CSS into PDF, commonly on a server that processes input supplied by many tenants. From version 0.15.0 to before version 0.27.0, resolving the CSS counters(name, sep) function in generated content was bounded neither in the size of a single expansion nor in the aggregate work across an element tree. An attacker able to submit HTML/CSS to a fulgur-based conversion service can trigger CPU and memory exhaustion with a trivially small payload, denying service to the host and any co-tenants. This issue has been patched in version 0.27.0.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "cwe_ids": [
        "CWE-400"
    ],
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/68xxx/CVE-2026-68538.json"
}
References

Affected packages

Git / github.com/fulgur-rs/fulgur

Affected ranges

Type
GIT
Repo
https://github.com/fulgur-rs/fulgur
Events
Introduced
dd80c1a8ea62d014e5afc4131b73e94ed15c2ada
Fixed
6ebb403baa54a1fdeaba284bf49ca3a381d11557
Fixed
ebc75691ad368f1c1a211543313b04da2af466d6
Database specific
Show details 
{
    "extracted_events": [
        {
            "range": [
                {
                    "introduced": "0.15.0"
                },
                {
                    "fixed": "0.27.0"
                }
            ],
            "source": "AFFECTED_FIELD",
            "strategy": "StringRangeExpression"
        },
        {
            "range": [
                {
                    "fixed": "ebc75691ad368f1c1a211543313b04da2af466d6"
                }
            ],
            "source": "REFERENCES_COMMIT"
        },
        {
            "original_tag": "v0.27.0",
            "range": [
                {
                    "fixed": "6ebb403baa54a1fdeaba284bf49ca3a381d11557"
                }
            ],
            "source": "REFERENCES_TAG"
        }
    ]
}

Affected versions

v0.*
v0.15.0
v0.16.0
v0.17.0
v0.18.0
v0.19.0
v0.20.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-68538.json"