VulnSocial

CVE-2026-34519Disclosure(aiohttp / aiohttp)

LOWCVSS 5.3 · 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, an attacker who controls the reason parameter when creating a Response may be able to inject extra headers or similar exploits. 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-113

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 2 signals
  • Technical details provided in 2 signals
  • Disclosure: 1 classified signal
  • 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: 2Technical Details · 2026-04-02: 204-02
Signal classification2 categories
Disclosure
150.0%
Patch
150.0%
Referenced assets2 URLs
By indicator
Full discourse2 posts
  • CVE@CVEnew
    Disclosure

    CVE-2026-34519 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a… https://www.cve.org/CVERecord?id=CVE-2026-34519

    Post summary

    CVE-2026-34519 highlights a vulnerability in AIOHTTP that can be mitigated by upgrading to version 3.13.4 or later. The announcement focuses on the discovery and available patch rather than exploit details.

    00020200
    57.6K followersView on X
  • Infoflowcloud@infoflowcloud
    Patch

    🚨*CVE* CVE-2026-34519 AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an attacker who controls the reason parameter when creating a… https://www.cve.org/CVERecord?id=CVE-2026-34519 ----- Traducción: CVE-2026-34519 AIO… http://infoflow.cloud`

    Post summary

    The tweet highlights CVE‑2026‑34519 in AIOHTTP, describes a reason‑parameter control flaw, and indicates the vulnerability is fixed in version 3.13.4.

    0000031
    65 followersView on X
CPE platform detail1 entries

1 of 1 entries

PartVendorProductVersionTarget SWTarget HW
Appaiohttpaiohttp---

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