CVE-2026-3298
Last modified
CVE-2026-3298 is a high-severity vulnerability rated 8.8/10 on the CVSS scale. The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. EPSS estimates a 0.39% chance of exploitation in the next 30 days.
Description
The method "sock_recvfrom_into()" of "asyncio.ProacterEventLoop" (Windows only) was missing a boundary check for the data buffer when using nbytes parameter. This allowed for an out-of-bounds buffer write if data was larger than the buffer size. Non-Windows platforms are not affected.
Metrics
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:L/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
Weakness Enumeration
Affected Software
Source: CNA advisory (CVE.org). NVD analysis pending.
| Vendor | Product | Versions |
|---|---|---|
| Python Software Foundation | CPython | < 3.11.16; >= 3.12.0, < 3.12.14; >= 3.13.0, < 3.13.14; >= 3.14.0a1, < 3.14.5rc1; >= 3.15.0a1, < 3.15.0b1 |
References
Timeline
- Published
- Last Modified
- Status
- Awaiting Analysis
Frequently Asked Questions
What is CVE-2026-3298?
How severe is CVE-2026-3298?
How do I fix CVE-2026-3298?
How Strix Helps
- How Strix found a critical auth bypass in etcdStrix autonomously discovered a critical authentication bypass in etcd, later designated CVE-2026-33413.
- Autonomous PentestingAI agents that find and validate exploitable vulnerabilities like this one across your applications.
- PR ReviewsPentest every pull request so vulnerable code is caught before it ships to production.
- AI Penetration TestingHow AI-driven penetration testing continuously covers your attack surface.
Related CVEs from 2026
- CVE-2026-32974OpenClaw before 2026.3.12 contains an authentication bypass …9.8
- CVE-2026-32975OpenClaw before 2026.3.12 contains a weak authorization vuln…9.8
- CVE-2026-32976OpenClaw before 2026.3.11 contains an authorization bypass v…7.1
- CVE-2026-32977OpenClaw before 2026.3.11 contains a sandbox boundary bypass…6.3
- CVE-2026-32978OpenClaw before 2026.3.11 contains an approval integrity vul…7.5
- CVE-2026-32979OpenClaw before 2026.3.11 contains an approval integrity vul…6.7
- CVE-2026-32980OpenClaw before 2026.3.13 reads and buffers Telegram webhook…8.7
- CVE-2026-32981A path traversal vulnerability was identified in Ray Dashboa…8.7
- CVE-2026-32982OpenClaw before 2026.3.13 contains an information disclosure…8.7
- CVE-2026-32983Wazuh Manager authd service in wazuh-manager packages throug…7.5
- CVE-2026-32984Wazuh authd contains a heap-buffer overflow vulnerability th…5.3
- CVE-2026-32985Xerte Online Toolkits versions 3.14 and earlier contain an u…9.8
Are you affected by CVE-2026-3298?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST