CVE Explorer

CVE-2026-54278

AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, during cleanup it is possible for a compressed request body to be decompressed into memory in one chunk. An attacker may be able to send a compressed payload in specific situations that could be decompressed into memory, potentially leading to DoS (a zip bomb edge case). This vulnerability is fixed in 3.14.1.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:5ec5673fed5c2b2d0f9d01527ac110e6d3547b92730939289129c93b641a4c4c

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Affected products and versions

1 source assertion

{"product":"aiohttp","vendor":"aio-libs","versions":[{"status":"affected","version":"< 3.14.1"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:50b0eaadab82e9bc2b969a98b420862c98772e8b78cb319cbb2c6d2d26bfad9f · sha256:2517c887c476053a… · /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:v2:50b0eaadab82e9bc2b969a98b420862c98772e8b78cb319cbb2c6d2d26bfad9f · sha256:2517c887c476053a… · /containers/cna/metrics/0/cvssV4_0

CWE assertions

1 source assertion

{"cweId":"CWE-409","description":"CWE-409: Improper Handling of Highly Compressed Data (Data Amplification)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:50b0eaadab82e9bc2b969a98b420862c98772e8b78cb319cbb2c6d2d26bfad9f · sha256:2517c887c476053a… · /containers/cna/problemTypes/0/descriptions/0

Source references

2 source assertions

{"name":"https://github.com/aio-libs/aiohttp/commit/4f7480e474cccc6a8cc2c92ad3f17a31dedf8232","tags":["x_refsource_MISC"],"url":"https://github.com/aio-libs/aiohttp/commit/4f7480e474cccc6a8cc2c92ad3f17a31dedf8232"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:50b0eaadab82e9bc2b969a98b420862c98772e8b78cb319cbb2c6d2d26bfad9f · sha256:2517c887c476053a… · /containers/cna/references/1

{"name":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-g3cq-j2xw-wf74","tags":["x_refsource_CONFIRM"],"url":"https://github.com/aio-libs/aiohttp/security/advisories/GHSA-g3cq-j2xw-wf74"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:50b0eaadab82e9bc2b969a98b420862c98772e8b78cb319cbb2c6d2d26bfad9f · sha256:2517c887c476053a… · /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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