Snyk agent scan: AIOHTTP: File descriptor exhaustion in multipart requests (CVE-2026-111066)
Description
CVE-2026-111066 is a vulnerability in aiohttp where an attacker can exhaust file descriptors by sending specially crafted multipart requests. This affects handlers using Request.post(), potentially leading to resource exhaustion. Versions from 0.4.3 up to but not including 0.6.9 are affected. A patch is available to address this issue.
CVSS v4.0
Affected software
Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability allows an attacker to cause file descriptor exhaustion in aiohttp by sending specially crafted multipart HTTP requests. The issue arises when a handler uses the Request.post() method, which may allocate an unlimited number of file descriptors, leading to resource exhaustion on the server. This can degrade service availability or cause denial of service conditions. The vulnerability affects aiohttp versions >=0.4.3 and <0.6.9. A patch is available to remediate this vulnerability.
Potential Impact
An attacker can cause resource exhaustion by consuming an unlimited number of file descriptors via multipart requests, potentially leading to denial of service or degraded service availability for affected aiohttp servers using vulnerable versions.
Mitigation Recommendations
A patch is available for this vulnerability. Users should upgrade aiohttp to version 0.6.9 or later to mitigate the risk of file descriptor exhaustion. No additional vendor advisory details are provided, so check the official aiohttp or related vendor advisories for the exact patch and upgrade instructions.
Technical Details
- Gcve Source
- db.gcve.eu
- Osv Id
- BREW-snyk-agent-scan-CVE-2026-111066
- Osv Schema Version
- 1.7.3
- Ecosystems
- ["Homebrew"]
- Cvss Version
- 4.0
- State
- PUBLISHED
Threat ID: 6ada44e84d27ba8daa6a52bb
Added to database: 10/22/2026, 17:16:24 UTC
Last enriched: 10/22/2026, 17:29:13 UTC
Last updated: 10/22/2026, 20:15:13 UTC
Views: 2
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.