CVE Explorer

CVE-2026-47265

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to version 3.14.0, cookies set with the `cookies` parameter on requests are sent after following a cross-origin redirect. If a developer uses the `cookies` parameter on a per-request basis then sensitive data might be leaked to an attacker if they manage to control a redirect. Version 3.14.0 patches the issue. If unable to upgrade, using a `Cookie` header in the `headers` parameter is not vulnerable.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:b42dec148fd539a6b9490528862b439defa320273c488d22e28125973c90a5f7

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"aiohttp","vendor":"aio-libs","versions":[{"status":"affected","version":"< 3.14.0"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:b88e91117f3e8d6f023fe1f6e40bec2b76a8d5bef3042eb79eaa25f99e5ff50f · sha256:a83b20984783634e… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":6.6,"baseSeverity":"MEDIUM","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:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"HIGH","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:b88e91117f3e8d6f023fe1f6e40bec2b76a8d5bef3042eb79eaa25f99e5ff50f · sha256:a83b20984783634e… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-346","description":"CWE-346: Origin Validation Error","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:b88e91117f3e8d6f023fe1f6e40bec2b76a8d5bef3042eb79eaa25f99e5ff50f · sha256:a83b20984783634e… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/f54c40851b0d6c4bbdab97ba518a223adda32478"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b88e91117f3e8d6f023fe1f6e40bec2b76a8d5bef3042eb79eaa25f99e5ff50f · sha256:a83b20984783634e… · /containers/cna/references/1

{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-hg6j-4rv6-33pg"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:b88e91117f3e8d6f023fe1f6e40bec2b76a8d5bef3042eb79eaa25f99e5ff50f · sha256:a83b20984783634e… · /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.

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