CVE-2026-34517
python-aiohttp: large multipart form fields read into memory without size check can cause a denial of service
CVE-2026-34517 is fixed in 3 products on 1 platform, first by DEBIAN-CVE-2026-34517, released April 1, 2026. It is not reported as exploited. Patch Radar priority: Routine.
Routine
CVSS
5.3
IMPORTANT
Exploitation
None reported
No vendor assessment
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0040
34th percentile
large multipart form fields read into memory without size check can cause a denial of service
Where it's fixed
| Product | Fixed in | Fix | Released |
|---|---|---|---|
| Linux | |||
| python-aiohttp · Debian 12.15 (bookworm) | 3.8.4-1+deb12u2 | DEBIAN-CVE-2026-34517 | Apr 1, 2026 |
| python-aiohttp · Debian 14 | 3.13.5-1 | DEBIAN-CVE-2026-34517 | Apr 1, 2026 |
| python-aiohttp · opensuse-leap 16.0 | 3.11.16-160000.5.1 | OPENSUSE-SU-2026:21098-1 | Jun 19, 2026 |
| python-aiohttp · sles 15.6 | 3.9.3-150400.10.43.1 | SUSE-SU-2026:3207-1 | Jul 23, 2026 |
| python-aiohttp · sles 15.7 | 3.9.3-150400.10.43.1 | SUSE-SU-2026:3207-1 | Jul 23, 2026 |
| python-aiohttp · sles 16.0 | 3.11.16-160000.5.1 | SUSE-SU-2026:22173-1 | Jun 19, 2026 |
| python39-oci-sdk · ol 9 | 0:2.187.0-1.0.5.el9 | ELSA-2026-604898 | Nov 7, 2026 |
| python39-oci-sdk-docs · ol 9 | 0:2.187.0-1.0.5.el9 | ELSA-2026-604898 | Nov 7, 2026 |
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