USN-8591-1: python-aiohttp Ubuntu

Published
Published 22-07-2026Last modified 23-07-2026

Vulnerability summary

USN-8591-1 is a vulnerability in python-aiohttp Ubuntu with no CVSS score yet.

Priority
Insufficient evidence

No CVSS vector published; no exploitation reported by the 5 checked sources

Source freshness unavailable

How is this decided?
CVSS score
Not scored
010
No CVSS score recorded
EPSS scoreNot scoredRisk metrics not yet published.
KEVNot listedNot listed by any tracked catalog.
RansomwareNot flaggedNo ransomware use recorded.
Public exploits0No public exploits recorded

Advisory lineage

Upstream 0 · Downstream 0 · Related 4
CVE-2026-22815CVE-2026-34513CVE-2026-34514CVE-2026-34516

Timeline

  1. 22-07-2026
    PublishedVulnerability first disclosed.
  2. 23-07-2026
    Last modifiedVulnerability information updated.

Description

python-aiohttp vulnerabilities Sean Gilligan discovered that AIOHTTP did not properly limit memory usage when processing HTTP headers and trailers. An attacker could possibly use this issue to consume excessive system resources, resulting in a denial of service. (CVE-2026-22815) It was discovered that AIOHTTP did not properly limit the size of its DNS cache. An attacker could possibly use this issue to consume excessive system resources, resulting in a denial of service. (CVE-2026-34513) Mingi Jung discovered that AIOHTTP did not properly sanitize the content_type parameter. An attacker could possibly use this issue to inject malicious HTTP headers, resulting in HTTP response splitting. (CVE-2026-34514) It was discovered that AIOHTTP did not properly limit memory usage when processing multipart headers. An attacker could possibly use this issue to consume excessive system resources, resulting in a denial of service. (CVE-2026-34516)

CVSS metrics

Risk metrics not yet published.

EPSS trend

No EPSS score has been published for this record yet.

Known exploited

Compare KEV catalogs
CISA KEV

Not in the CISA KEV catalog.

ENISA CNW

Not in the ENISA CNW catalog.

CIRCL

Not in the CIRCL catalog.

Public exploits

0 found

No public exploits indexed.

Weaknesses

CWE · root cause

No weakness data has been published for this record.

Affected systems

Version check

Known conditions: not stated in public data.

Ubuntu1 product
  • python-aiohttp< 0.20.2-1ubuntu0.1~esm1 | < 3.0.1-1ubuntu0.1~esm7 | < 3.6.2-1ubuntu1+esm6 | < 3.8.1-4ubuntu0.2+esm3 | < 3.9.1-1ubuntu0.1+esm3 | < 3.13.3-3ubuntu1+esm1

1 vendor · 1 product

References

5 links