🛡️ CVE-2026-8258

🟡 CVSS 5.3 — Medium ✅ No Known Exploit CWE-119 NVD
5.3
CVSS Score
0 Low4 Medium7 High9 Critical10

Description

A flaw has been found in Squirrel up to 3.2. Impacted is the function validate_format in the library sqstdlib/sqstdstring.cpp. Executing a manipulation can lead to stack-based buffer overflow. The attack can only be executed locally. The exploit has been published and may be used. The project was informed of the problem early through an issue report but has not responded yet.

How this vulnerability can be exploited

This issue can be reached with local access to the system, attack complexity is low, an attacker needs low-level privileges on the target. No user interaction is required. The scope is unchanged, so the impact stays within the vulnerable component. Rated impact: confidentiality low, integrity low, availability low.

Weakness class

CVE-2026-8258 is classified as CWE-119: Improper Restriction of Operations within Memory Buffer Bounds. A read or write is performed without confirming it stays inside the allocated buffer, corrupting adjacent memory.

Affected software

CVE-2026-8258 is recorded against 1 package.

  • unknown

Timeline and source

Published on 11 May 2026 and last revised on 23 July 2026. No public exploit is currently recorded for this entry. Record sourced from NVD.

References

github.com
github.com
vuldb.com
vuldb.com
vuldb.com
github.com

CVE-2026-8258 on other distributions

Each distribution ships its own build and its own fixed version. Pick the one you run:

Details

Severity MEDIUM
CVSS Score 5.3
CVSS Vector CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CWE CWE-119
Public Exploit ✅ No
Source NVD
Published 2026-05-11
Updated 2026-08-11
Modified 2026-07-23
Fix URL N/A

Affected Packages

Software From version Fixed in
unknown — —

Similar Threats

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