Critical Vulnerabilities in openSUSE Python-aiohttp Prompt Urgent Patching

Critical Vulnerabilities in openSUSE Python-aiohttp Prompt Urgent Patching

First seen 24 Jul 2026, 03:31 UTC •www.suse.comLinuxsecurity •72.0

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Recent updates for the openSUSE Python-aiohttp package address multiple critical vulnerabilities. CVE-2026-22815 and CVE-2026-34513, among others, can lead to denial of service due to unbounded memory usage and header injection. These vulnerabilities affect various SUSE Linux Enterprise and openSUSE versions. The flaws include issues with header handling, DNS caching, and multipart form fields, which can be exploited to exhaust system resources. Security professionals are urged to apply patches immediately to mitigate risks. The vulnerabilities were disclosed between April and June 2026, with the latest advisory issued on July 24, 2026. Affected systems include SUSE Linux Enterprise Server and openSUSE Leap.

Key Points: • Multiple critical CVEs in Python-aiohttp can lead to denial of service. • Patches are available for various SUSE Linux Enterprise and openSUSE versions. • Immediate action is required to mitigate risks from these vulnerabilities.

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Timeline

2026-04-01
CVE-2026-22815 published
Insufficient restrictions in header handling can cause uncapped memory usage, leading to DoS.
Linuxsecurity
2026-04-01
CVE-2026-34513 published
Unbounded DNS cache can cause excessive memory usage, resulting in denial of service.
Linuxsecurity
2026-04-01
CVE-2026-34516 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-04-01
CVE-2026-34519 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-04-01
CVE-2026-34514 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-04-01
CVE-2026-34518 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-04-01
CVE-2026-34517 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE
2026-06-22
CVE-2026-54273 published
No limit in the HTTP/1 pipelined request queue can lead to excessive resource consumption.
Linuxsecurity
2026-06-22
CVE-2026-54274 published
Incomplete websocket frame payloads can bypass memory use limits, causing DoS.
Linuxsecurity
2026-06-22
CVE-2026-54277 published
Vulnerability assigned a CVE identifier and published in the National Vulnerability Database.
MITRE

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