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CVE-2026-79591

Quick assessment

Affected
n/a n/a
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

在 libxls 1.6.3 版本的 函数中存在堆缓冲区溢出和释放后使用（use-after-free）漏洞，这是由于对文件控制的字体索引缺乏充分验证所致。

AI Predicted 7.8 Difficulty: Moderate

Possible ATT&CK Techniques 1 AI

T1190 · Exploit Public-Facing Application
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I. Basic Information for CVE-2026-79591

Vulnerability Information
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Vulnerability Title
N/A
Source: CVE Program / CVE List V5
Vulnerability Description
A heap-buffer-overflow and use-after-free vulnerability exists in the xls_getCSS() function of libxls 1.6.3 due to insufficient validation of a file-controlled font index.
Source: CVE Program / CVE List V5
CVSS Information
N/A
Source: CVE Program / CVE List V5
Vulnerability Type
N/A
Source: CVE Program / CVE List V5

Affected Products

Vendor Product Affected Versions CPE Subscribe
- n/a n/a -

II. Public POCs for CVE-2026-79591

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III. Intelligence Information for CVE-2026-79591

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Patches & Fixes for CVE-2026-79591 (2)

Same Patch Batch · n/a · 2026-09-10 · 7 CVEs total

CVE-2026-38626 Garlic-Hub v1.0.1 SQL注入漏洞
CVE-2026-52098 Flowise 3.1.2 远程代码执行漏洞
CVE-2026-52097 AppFlowy 0.11.8 远程代码执行漏洞
CVE-2026-68006 Puma 8.0.3前任意代码执行
CVE-2026-79592 libxls 1.6.3 xls_dumpSummary越界读取
CVE-2022-26962 Italtel NFV 11.1.2 存储型XSS漏洞

IV. Related Vulnerabilities

Same product: n/a
Same vendor: n/a

V. Comments for CVE-2026-79591

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