CVE-2026-68747
NVD: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote... NVD: HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output... NVD: @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.
2.3 Severity
LOW EPSS
0.0025 (17) KEV
-
Source-published summary
NVD: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') vulnerability in the CSS scrubber in rrrene html_sanitize_ex allows an unauthenticated remote attacker to inject CSS at-rules, including an import of a remote... NVD: HtmlSanitizeEx.Scrubber.CSS.scrub/1 applies its property and value allowlist through a Regex.replace over substrings matching a property: value declaration pattern, so input that does not match that pattern is never inspected and is copied to the output... NVD: @import url(//attacker.example/style.css); survives, while the same URL inside a background: url(...) declaration is removed.
Possible impact
Source describes remote exposure. Possible impact: This low severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.
Affected context
vendor/product: rrrene / htmlsanitizeex
Remediation / advisory
Remediation reference present; patch status requires confirmation in the linked advisory.
Why it matters
Source describes remote exposure. Possible impact: This low severity issue needs human triage to confirm exposure, affected versions, and vendor guidance for remote exposure.; CVSS 2.3 (LOW); EPSS percentile 17; not listed in KEV; Remediation reference present; patch status requires confirmation in the linked advisory; sources: NVD, OSV.
What to verify
Confirm affected product/version, vendor advisory, patch or mitigation, and exposure.
Exposure hint
remote exposure
Impact tags
Urgency reasons
Source-derived note
Summary derived from NVD / OSV description; unsafe procedural detail is not shown.
Redaction metadata
- source summary used
- True
- fallback summary used
- False
- unsafe procedural detail present
- false
- raw source displayed
- false
- public summary redacted
- true
Remediation handoff
Public-safe static handoff for human/Codex remediation planning. Scan, patch, external execution, and auto remediation are disabled.
Safety note
This radar shows source-published defensive context only. Exploit procedures, exploit strings, scanner commands, and auto-remediation are not provided.
Official references
- https://nvd.nist.gov/vuln/detail/CVE-2026-68747
- https://osv.dev/vulnerability/CVE-2026-68747
- https://cna.erlef.org/cves/CVE-2026-68747.html
- https://github.com/rrrene/html_sanitize_ex/commit/0b9f9ad63a7529d4f2c3c1134c371adc3e654308
- https://github.com/rrrene/html_sanitize_ex/security/advisories/GHSA-87v2-pfhj-r5x7
- https://osv.dev/vulnerability/EEF-CVE-2026-68747