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CVE-2023-49081

Aiohttp vulnerability

7.2 HIGHPublic exploitEPSS 0.88%
  1. Published30 Nov 2023

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.

CVSS 3.1 breakdown

Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
ScopeChanged
ConfidentialityLow
IntegrityLow
AvailabilityNone
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:L/A:N

Affected products

Aiohttp< 3.9.0

Remediation

Fixed in
Aiohttp≥ 3.9.0

References

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Frequently asked

Is CVE-2023-49081 being actively exploited?

CVE-2023-49081 is not in the CISA KEV catalog. A public exploit reference exists, so treat it as exploitable. Its EPSS exploit probability is 0.88%.

How severe is CVE-2023-49081?

CVE-2023-49081 has a CVSS 3.1 base score of 7.2, rated high. EPSS estimates a 0.88% probability of exploitation.

Which products are affected by CVE-2023-49081?

Affected products include Aiohttp.

How do I fix CVE-2023-49081?

Upgrade affected software to a fixed version, for example Aiohttp 3.9.0 or later, then confirm no affected versions remain in your inventory.

How Secuno handles this

Secuno correlates vulnerabilities like CVE-2023-49081 against the real software inventory on every managed device, as each hourly inventory arrives. Rather than a static severity, each match is scored in context: exploit availability, EPSS, the asset's exposure, and business criticality decide where it lands in the queue. If an affected version is present anywhere across your portfolio, it surfaces automatically with a prioritised remediation path.

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Data from the NVD, CISA KEV catalog and FIRST EPSS. CVSS 3.1 base score shown where available.