CVE Explorer

CVE-2026-50269

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.0, attacker-controlled input included into multipart/payload headers can be used to modify a request to inject additional headers or similar. In the unlikely situation that an application is passing user-controlled strings into MultipartWriter.append(headers=...) or Payload.headers, then an attacker may be able to modify the request to inject headers or change the contents of the request. This vulnerabi

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ee8c31f98f208655901d45a71452aee0675e21e3f81b3cd775213292623f8a78

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-113","description":"CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/problemTypes/0/descriptions/0

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:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /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:L/VA:N/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"NONE","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"LOW"},"metric_type":"cvssV4_0"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

2 source assertions

{"cweId":"CWE-113","description":"CWE-113: Improper Neutralization of CRLF Sequences in HTTP Headers ('HTTP Request/Response Splitting')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-93","description":"CWE-93: Improper Neutralization of CRLF Sequences ('CRLF Injection')","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/aio-libs/aiohttp/commit/bf88077ebb14f4c29924b8e8904cba20c55c28b8","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/bf88077ebb14f4c29924b8e8904cba20c55c28b8"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /containers/cna/references/1

{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m6qw-4cw2-hm4m","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-m6qw-4cw2-hm4m"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:fb54b946afb1ef1d1b78d1742bca017a3779c5e183e60d4ae569147cd582c0da · sha256:a28744bf62d70771… · /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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