CVE-2026-29078

Katalog CVE

CVSS 7.5 · High EPSS 0,48%

Kerentanan Integer Underflow (Wrap or Wraparound) pada lexbor. Skor CVSS 3.1 7.5 (High) menurut NVD.

Deskripsi (NVD)

Lexbor is a web browser engine library. Prior to 2.7.0, the ISO‑2022‑JP encoder in Lexbor fails to reset the temporary size variable between iterations. The statement ctx->buffer_used -= size with a stale size = 3 causes an integer underflow that wraps to SIZE_MAX. Afterwards, memcpy is called with a negative length, leading to an out‑of‑bounds read from the stack and an out‑of‑bounds write to the heap. The source data is partially controllable via the contents of the DOM tree. This vulnerability is fixed in 2.7.0.

Rincian

Terbit di NVD

13 Maret 2026

Terakhir diubah

17 Juni 2026

Status NVD

Analyzed

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-191: Integer Underflow (Wrap or Wraparound)
CWE-787: Out-of-bounds Write

EPSS (30 hari)

0,48% peluang dieksploitasi; lebih tinggi dari 39,5% CVE lain

Produk dan versi terdampak

> Data dari konfigurasi CPE di NVD.

Referensi dan perbaikan

• https://github.com/lexbor/lexbor/security/advisories/GHSA-mrwr-xh7f-96v3 advisory vendor