VulnSocial

CVE-2026-34516Disclosure(aiohttp / aiohttp)

LOWCVSS 6.6 · MEDIUM

Signal is active with 2 mentions in latest observed window

Immediate actions

  • Patch aiohttp aiohttp systems immediately

Recommended action window: Monitor and triage in normal cycle

NVD description

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may be allowed to use more memory than intended, potentially allowing a DoS vulnerability. This issue has been patched in version 3.13.4.

aiohttp CVEsBack to dashboard
0.5/ 10 priority

Sources & remediation

Patch / fix
Other references
Weakness type (CWE)
CWE-770

Priority

LOW

Exploitation

NONE

PoC

NONE

Patch

AVAILABLE

Momentum

NONE

Are you affected?

If you run products in this scope, you should treat this CVE as relevant to your environment.

  • aiohttp

Threat summary

  • Patch or workaround signal is available
  • 2 mentions across 1 observed day

What's happening

  • Patch or workaround mentioned in 1 signal
  • Technical details provided in 2 signals
  • Disclosure: 2 classified signals
  • 2 total mentions across 1 day

Affected systems

Vendors
aiohttp
Products
aiohttp

Deep dive

Activity timeline2 mentions / 1d
01122Mentions · 2026-04-02: 2Patch / Workaround · 2026-04-02: 1Technical Details · 2026-04-02: 204-02
Signal classification1 categories
Disclosure
2100.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • Infoflowcloud@infoflowcloud
    Disclosure

    🚨*CVE* CVE-2026-34516 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may … https://www.cve.org/CVERecord?id=CVE-2026-34516 ----- Traducción: CVE-2026-34516 AIO… http://infoflow.cloud`

    Post summary

    A new CVE (CVE-2026-34516) affecting AIOHTTP versions prior to 3.13.4 is described, highlighting a potential issue with excessive multipart headers, but no exploit details, patches, or active attacks are mentioned.

    0000027
    65 followersView on X
  • CVE@CVEnew
    Disclosure

    CVE-2026-34516 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, a response with an excessive number of multipart headers may … https://www.cve.org/CVERecord?id=CVE-2026-34516

    Post summary

    The post announces CVE-2026-34516 in AIOHTTP, describing an issue with excessive multipart headers and noting that the problem is resolved in version 3.13.4, with no PoC, exploit, or active usage reported.

    00000166
    56.9K followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appaiohttpaiohttp---

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