CVE-2026-93990

Katalog CVE

CVSS 7.5 · High EPSS 0,40%

Kerentanan Improper Handling of Unicode Encoding. Skor CVSS 3.1 7.5 (High) menurut vulncheck.com.

Deskripsi (NVD)

Expat before 2.8.5 fails to validate that a high surrogate in UTF-16 input is followed by a low surrogate, allowing malformed UTF-16 sequences to be accepted. Attackers can supply UTF-16 encoded XML containing lone high surrogates that consume the following code unit, causing Expat to pass unpaired surrogates to applications built with XML_UNICODE and to silently replace input characters in other builds.

Rincian

Terbit di NVD

19 September 2026

Terakhir diubah

28 September 2026

Status NVD

Awaiting Analysis

CVSS 3.1

7.5 (High), sumber vulncheck.com
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N · uraikan di kalkulator

Jenis kelemahan (CWE)

CWE-176: Improper Handling of Unicode Encoding

EPSS (30 hari)

0,40% peluang dieksploitasi; lebih tinggi dari 32,7% CVE lain

Produk dan versi terdampak

NVD belum mencantumkan data produk (CPE) untuk CVE ini. Produk yang terdampak biasanya disebut di deskripsi dan di advisory vendor pada daftar referensi.

Referensi dan perbaikan

• https://blog.hartwork.org/posts/expat-2-8-5-released/
• https://github.com/libexpat/libexpat
• https://github.com/libexpat/libexpat/commit/ff6e1d7e750bbe245178f51a47a965dc8342861a
• https://github.com/libexpat/libexpat/pull/1282
• https://github.com/libexpat/libexpat/releases/tag/R_2_8_5
• https://www.vulncheck.com/advisories/expat-through-2.8.4-malformed-utf-16-acceptance-via-unchecked-surrogate