CVE-2026-76834

Katalog CVE

CVSS 8.1 · High EPSS 0,85%

Kerentanan Deserialization of Untrusted Data. Skor CVSS 3.1 8.1 (High) menurut vulncheck.com.

Deskripsi (NVD)

b2evolution CMS versions 6.7.8 through 7.2.5 contain an incomplete fix for CVE-2016-8901 where the serialized-array object check in param_check_serialized_array() fails to reject payloads with negative integer array keys. Unauthenticated attackers can submit crafted serialized PHP objects via POST requests to htsrv/call_plugin.php that bypass validation and reach unserialize(), instantiating arbitrary PHP objects with attacker-chosen properties that may enable code execution if suitable POP gadget chains exist.

Rincian

Terbit di NVD

17 September 2026

Terakhir diubah

23 September 2026

Status NVD

Deferred

CVSS 3.1

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

Jenis kelemahan (CWE)

CWE-502: Deserialization of Untrusted Data

EPSS (30 hari)

0,85% peluang dieksploitasi; lebih tinggi dari 56,9% 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://b2evolution.net/news/2022/03/26/2022-update-eol
• https://gist.github.com/axg11/3e29501c33f6e1e05ac2a00107afd64e
• https://github.com/b2evolution/b2evolution
• https://github.com/b2evolution/b2evolution/blob/7.2.5/htsrv/call_plugin.php#L49
• https://github.com/b2evolution/b2evolution/blob/7.2.5/inc/_core/_param.funcs.php#L2860
• https://github.com/b2evolution/b2evolution/commit/25c21cf9cc4261324001f9039509710b37ee2c4d
• https://github.com/b2evolution/b2evolution/commit/335abf09bcea61717bd00bc1e3889f8100ebd1bb
• https://github.com/b2evolution/b2evolution/commit/999b5ad1d59760d7e450ceb541f55432fc74cd27
• https://www.vulncheck.com/advisories/b2evolution-cms-6.7.8-through-7.2.5-object-injection-via-negative-integer...