Baitaphish
Security intelligence
SearchLatest briefing
CVE Explorer

CVE-2026-54277

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, it is possible to bypass the max_line_size check in parts of an HTTP request in the C parser. If using the optimised C parser (the default in pre-built wheels), then an attacker may be able to send oversized lines through the HTTP parser and use an excessive amount of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:0c969d8afdc3694376f3b55ec995826c1bda9b3e7aef6378a4e7daee59e2aeae
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":"< 3.14.1"}]}
  • cve_program_cvelist_v5affected
    urn:baitaphish:normalized-source-record:v2:4df5237dfb87d2f2c21cb2da6d6ab6a218e0a4b08893cc78a5c5d13780cce539 · sha256:a92a4ece4142acd4… · /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:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U","version":"4.0","vulnAvailabilityImpact":"HIGH","vulnConfidentialityImpact":"NONE","vulnIntegrityImpact":"NONE"},"metric_type":"cvssV4_0"}
  • cve_program_cvelist_v5cvss
    urn:baitaphish:normalized-source-record:v2:4df5237dfb87d2f2c21cb2da6d6ab6a218e0a4b08893cc78a5c5d13780cce539 · sha256:a92a4ece4142acd4… · /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_v5cwe
    urn:baitaphish:normalized-source-record:v2:4df5237dfb87d2f2c21cb2da6d6ab6a218e0a4b08893cc78a5c5d13780cce539 · sha256:a92a4ece4142acd4… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions
{"name":"https://github.com/aio-libs/aiohttp/commit/5ab61bb4cd88f19b712f12c7c9295fe262bf804d","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/5ab61bb4cd88f19b712f12c7c9295fe262bf804d"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4df5237dfb87d2f2c21cb2da6d6ab6a218e0a4b08893cc78a5c5d13780cce539 · sha256:a92a4ece4142acd4… · /containers/cna/references/1
{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-63hw-fmq6-xxg2","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-63hw-fmq6-xxg2"}
  • cve_program_cvelist_v5reference
    urn:baitaphish:normalized-source-record:v2:4df5237dfb87d2f2c21cb2da6d6ab6a218e0a4b08893cc78a5c5d13780cce539 · sha256:a92a4ece4142acd4… · /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.

← Back to CVE Explorer