CVE Explorer
CVE-2026-69243
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. A WebSocket upgrade request with a body could cause the parser to switch protocols before the complete request body was received, leaving trailing b
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":"< 3.14.2"}]}
- cve_program_cvelist_v5affectedurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/affected/0
Provider-owned CVSS observations
1 source assertion{"metric":{"attackComplexity":"HIGH","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.3,"baseSeverity":"MEDIUM","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"NONE","vectorString":"CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}
- cve_program_cvelist_v5cvssurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/metrics/0/cvssV4_0
CWE assertions
1 source assertion{"cweId":"CWE-444","description":"CWE-444: Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')","lang":"en","type":"CWE"}
- cve_program_cvelist_v5cweurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/problemTypes/0/descriptions/0
Source references
4 source assertions{"name":"https://github.com/aio-libs/aiohttp/commit/6ae358f0983c3f4d6f67692b2f8e65dc8e091c98","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/6ae358f0983c3f4d6f67692b2f8e65dc8e091c98"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/references/2
{"name":"https://github.com/aio-libs/aiohttp/pull/13017","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/pull/13017"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/references/1
{"name":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.2","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.2"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /containers/cna/references/3
{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mfx4-hv73-q22v","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-mfx4-hv73-q22v"}
- cve_program_cvelist_v5referenceurn:baitaphish:normalized-source-record:v2:ce61126fa019b426864b21ff5b742f36103d5da20a1a125c828c5f5b04c653ef · sha256:c104cb9eb700f04a… · /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.