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CVE-2026-69244

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.3, an out-of-bounds heap read could occur in the C response parser while building an error message for a malformed response. An attacker controlled server, or possibly an accidental response, could trigger a DoS in the client. The vulnerable path was error message construction in aiohttp/_http_parser.pyx, where an llhttp error-position pointer was used to build a snippet for malformed chunked responses
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:ee392924eab2acc644b4cb0277fdefbb854cc6541e0dd0aedc5c54140d70f7b3
Known exploited
Not asserted
Disputed
No
Stale source
No
Conflicts
1

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 3 assertions

{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/2/descriptions/0

{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}

  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion
{"product":"aiohttp","vendor":"aio-libs","versions":[{"status":"affected","version":"< 3.14.3"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion
{"metric":{"attackComplexity":"LOW","attackRequirements":"NONE","attackVector":"NETWORK","baseScore":7.1,"baseSeverity":"HIGH","privilegesRequired":"NONE","subAvailabilityImpact":"NONE","subConfidentialityImpact":"NONE","subIntegrityImpact":"NONE","userInteraction":"PASSIVE","vectorString":"CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

3 source assertions
{"cweId":"CWE-125","description":"CWE-125: Out-of-bounds Read","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/2/descriptions/0
{"cweId":"CWE-416","description":"CWE-416: Use After Free","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/1/descriptions/0
{"cweId":"CWE-400","description":"CWE-400: Uncontrolled Resource Consumption","lang":"en","type":"CWE"}
  • cve_program_cvelist_v5cwe
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/problemTypes/0/descriptions/0

Source references

4 source assertions
{"name":"https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/49f65d54150397892f7bcc4aae887767d51c322d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/references/2
{"name":"https://github.com/aio-libs/aiohttp/pull/13223","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/pull/13223"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/references/1
{"name":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.3","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/releases/tag/v3.14.3"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /containers/cna/references/3
{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-cq5v-8q36-5273"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:8dd41a28a772730a038956b56a0ff45aebcd7534d21f2ff27670936ae22d417f · sha256:27176683772a5b93… · /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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