CVE-2026-42006
4.3
MEDIUM
CVSS 3.1
EPSS 0.45%
描述
An attacker can cause uncontrolled memory usage with excessive bracing over IMAP. The fix in CVE-2026-27857 was incomplete, only blocking one way of doing this, so there was still another way left open. In particular, the fix was for closing braces, but you could still use open braces to bypass the limit. Using excessive bracing, attacker can cause memory usage up to configured memory limit. Install fixed version, or configure vsz_limit for imap process to low value. No publicly available exploits are known.
如何修補 CVE-2026-42006
要修補 CVE-2026-42006,請將受影響套件升級到下列已修補版本。
- —升級至 1:2.3.13+dfsg1-2+deb11u4 或更新版本
CVE-2026-42006 正在被利用嗎?
低 — EPSS 為 0.5%,目前沒有觀察到大規模利用活動。
受影響套件(1)
- from 0, < 1:2.3.13+dfsg1-2+deb11u4
CVSS 分數
| 來源 | 版本 | 嚴重程度 | 向量 |
|---|---|---|---|
| osv | CVSS 3.1 | MEDIUM4.3 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:N/A:L |