CVE-2020-26293

Katalog CVE

CVSS 6.1 · Medium EPSS 1,0%

Kerentanan Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') pada htmlsanitizer project htmlsanitizer. Skor CVSS 3.1 6.1 (Medium) menurut NVD.

Deskripsi (NVD)

HtmlSanitizer is a .NET library for cleaning HTML fragments and documents from constructs that can lead to XSS attacks. In HtmlSanitizer before version 5.0.372, there is a possible XSS bypass if style tag is allowed. If you have explicitly allowed the `<style>` tag, an attacker could craft HTML that includes script after passing through the sanitizer. The default settings disallow the `<style>` tag so there is no risk if you have not explicitly allowed the `<style>` tag. The problem has been fixed in version 5.0.372.

Rincian

Terbit di NVD

4 Januari 2021

Terakhir diubah

17 Juni 2026

Status NVD

Modified

CVSS 3.1

6.1 (Medium), sumber NVD
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-74: Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')
CWE-79: Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')

EPSS (30 hari)

1,0% peluang dieksploitasi; lebih tinggi dari 62,1% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/mganss/HtmlSanitizer/commit/a3a7602a44d4155d51ec0fbbedc2a49e9c7e2eb8 patch · advisory pihak ketiga
• https://github.com/mganss/HtmlSanitizer/releases/tag/v5.0.372 release notes · advisory pihak ketiga
• https://github.com/mganss/HtmlSanitizer/security/advisories/GHSA-8j9v-h2vp-2hhv advisory pihak ketiga
• https://www.nuget.org/packages/HtmlSanitizer/ product · advisory pihak ketiga