CVE Explorer
CVE-2026-34513
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.13.4, an unbounded DNS cache could result in excessive memory usage possibly resulting in a DoS situation. This issue has been patched in version 3.13.4.
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
0
Affected products and versions
1 source assertion{"product":"aiohttp","vendor":"aio-libs","versions":[{"status":"affected","version":"< 3.13.4"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":2.7,"baseSeverity":"LOW","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"LOW","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-770","description":"CWE-770: Allocation of Resources Without Limits or Throttling","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/problemTypes/0/descriptions/0
Source references
3 source assertions{"name":"https://github.com/aio-libs/aiohttp/commit/c4d77c3533122be353b8afca8e8675e3b4cbda98","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/c4d77c3533122be353b8afca8e8675e3b4cbda98"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/references/1
{"name":"https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.13.4"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/references/2
{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hcc4-c3v8-rx92","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hcc4-c3v8-rx92"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:d44e30f51c3092a880bc0d04503e12036dc3a36f30db1ce0a7c5f7ac6480e78c · sha256:5160a640598f927e… · /containers/cna/references/0
Attribution and limitations
- CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →
Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.