Skip to main content
MEDIUM

CVE-2023-49081

CVSS v3

5.3

MEDIUM

EPSS Score

0.9 %

exploit probability, as of 2026-10-19

CISA KEV

No

known exploited

Exploitation

—

SSVC status

Get an alert for each new CVE published for aiohttp.

Set up CVE WatchFree account · no credit card

Affected and fixed versions

Packages from OSV.dev and products from the vendors' CSAF advisories.

version not verifiedVersions not verified: read as OSV.dev and the vendors publish them, not checked against each vendor's release list.

Packages

  • aiohttpPyPIall versions · fixed in 3.9.0

Vendor advisories

  • CVE-2023-49081 Red Hat Product Security38 products fixed · 2 known affected

    aiohttp: HTTP request modification

    aiohttp.src as a component of Red Hat Ansible Automation Platform 1.2 · tfm-pulpcore-python-aiohttp.src as a component of Red Hat Satellite 6

  • RHSA-2024:2010 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.15.0 release

  • RHSA-2024:1878 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: RHUI 4.8 Release - Security Updates, Bug Fixes, and Enhancements

  • RHSA-2024:1536 Red Hat Product Security4 products fixed

    Red Hat Security Advisory: Satellite 6.14.3 Async Security Update

  • RHSA-2024:1057 Red Hat Product Security26 products fixed

    Red Hat Security Advisory: Red Hat Ansible Automation Platform 2.4 Product Security and Bug Fix Update

Full record on NVD

Description

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation made it possible for an attacker to modify the HTTP request (e.g. to insert a new header) or create a new HTTP request if the attacker controls the HTTP version. The vulnerability only occurs if the attacker can control the HTTP version of the request. This issue has been patched in version 3.9.0.

Technical details

Published
2023-11-30

Frequently asked questions

What is CVE-2023-49081?

aiohttp is an asynchronous HTTP client/server framework for asyncio and Python. Improper validation made it possible for an attacker to modify the HTTP request (e.g. to insert a new header) or create a new HTTP request if the attacker controls the HTTP version. The vulnerability only occurs if the attacker can control the HTTP version of the request. This issue has been patched in version 3.9.0.

Is CVE-2023-49081 actively exploited?

Active exploitation of CVE-2023-49081 has not been confirmed. Its EPSS score was 0.9% on 2026-10-19, the estimated probability of exploitation in the next 30 days.

What is the CVSS score for CVE-2023-49081?

CVE-2023-49081 has a CVSS v3 base score of 5.3 (MEDIUM severity).

Running aiohttp? Hear about its next vulnerability

CVE Watch matches each new CVE to the vendors and products you list (vendor and product, not the version) and puts it in your alerts with its KEV and EPSS status.

Get alerts for this productCISA KEV additions, October 2026Search CVEs

Already have an account? Open CVE WatchNo credit card required · No monthly cap on website lookups · 250 API requests/month

Go further

Related vulnerabilities

Same product first, then the same vendor advisory and the same publication week.

Back to CVE Database