CVE-2026-128131
- Source
- https://cve.org/CVERecord?id=CVE-2026-128131
- Import Source
- https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-128131.json
- JSON Data
- https://api.osv.dev/v1/vulns/CVE-2026-128131
- Aliases
-
- GHSA-h4cc-hm5h-fmm9
- Downstream
- Published
- 2026-11-13T20:39:46Z
- Modified
- 2026-11-14T10:45:27Z
- Severity
-
- 8.7 (High) CVSS_V4 - 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 CVSS Calculator
- Summary
- AIOHTTP: Concatenated compressed streams cause excessive CPU use
- Details
-
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, aiohttp decompresses each member of a payload containing many concatenated gzip, deflate, or zstd streams by passing the entire remaining input to a new decompressor, causing quadratic CPU use. Empty members produce no output, so client_max_size and output backpressure do not limit the work. A remote attacker can block a server event loop with a crafted compressed request body or WebSocket message, and a malicious server can similarly block a client. This issue is fixed in version 3.14.4.
- Database specific
{ "cna_assigner": "GitHub_M", "cwe_ids": [ "CWE-400", "CWE-407" ], "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128131.json" }- References
-
- https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/128xxx/CVE-2026-128131.json
- https://github.com/aio-libs/aiohttp/commit/d041d4d0fd48c3f0832084d33be16cf1c4835f85
- https://github.com/aio-libs/aiohttp/commit/d925a80539ffd227da1d93ab4a5bff123cc777db
- https://github.com/aio-libs/aiohttp/pull/13362
- https://github.com/aio-libs/aiohttp/pull/13391
- https://github.com/aio-libs/aiohttp/releases/tag/v3.14.4
- https://github.com/aio-libs/aiohttp/security/advisories/GHSA-h4cc-hm5h-fmm9
- https://nvd.nist.gov/vuln/detail/CVE-2026-128131
Affected packages
Git / github.com/aio-libs/aiohttp
Affected ranges
- Type
- GIT
- Repo
- https://github.com/aio-libs/aiohttp
- Events
-
Introduced0 Unknown introduced commit / All previous commits are affectedFixedFixedFixed
- Database specific
-
Show details
{ "extracted_events": [ { "range": [ { "introduced": "0" }, { "fixed": "3.14.4" } ], "source": "AFFECTED_FIELD", "strategy": "StringRangeExpression" }, { "range": [ { "fixed": "d041d4d0fd48c3f0832084d33be16cf1c4835f85" } ], "source": "REFERENCES_COMMIT" }, { "range": [ { "fixed": "d925a80539ffd227da1d93ab4a5bff123cc777db" } ], "source": "REFERENCES_COMMIT" }, { "original_tag": "v3.14.4", "range": [ { "fixed": "0c5e5e1c2256c2f46fa83912d01df7632c3b26cd" } ], "source": "REFERENCES_TAG" } ] }
Affected versions
0.*
0.15.2
0.8.2
1.*
1.3.0
2.*
2.0.0
2.0.0rc1
4v0.*
4v0.21.6
v.*
v.0.6.5
v0.*
v0.1
v0.10.0
v0.10.1
v0.11.0
v0.12.0
v0.13.0
v0.13.1
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.14.4
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.16.0
v0.16.1
v0.16.2
v0.16.3
v0.17.0
v0.18.0
v0.19.0
v0.2
v0.20.0
v0.20.1
v0.21.0
v0.22.0
v0.22.0b0
v0.22.0b1
v0.22.0b2
v0.22.0b3
v0.22.0b4
v0.22.0b5
v0.22.0b6
v0.22.1
v0.3
v0.4
v0.4.1
v0.4.2
v0.5.0
v0.6.1
v0.6.2
v0.6.3
v0.6.4
v0.7.0
v0.7.1
v0.7.2
v0.7.3
v0.8.0
v0.8.1
v0.8.3
v0.8.4
v0.9.0
v0.9.1
v0.9.2
v1.*
v1.0.0
v1.0.1
v1.1.0
v1.1.1
v1.2.0
v2.*
v2.1.0
v2.2.0
v2.3.0
v2.3.0a1
v2.3.0a2
v2.3.0a3
v2.3.0a4
v3.*
v3.0.0b0
v3.0.0b1
v3.0.0b2
v3.0.0b3
v3.0.0b4
v3.1.0
v3.10.0
v3.10.0b0
v3.10.0b1
v3.10.0rc0
v3.11.0
v3.11.0b0
v3.11.0b1
v3.11.0b2
v3.11.0b3
v3.11.0b4
v3.11.0b5
v3.11.0rc0
v3.11.0rc1
v3.11.0rc2
v3.12.0
v3.12.0b0
v3.12.0b1
v3.12.0b2
v3.12.0b3
v3.12.0rc0
v3.12.0rc1
v3.13.0
v3.14.0
v3.14.1
v3.14.2
v3.14.3
v3.2.0
v3.4.0
v3.4.0a0
v3.4.0a3
v3.4.0b1
v3.4.0b2
v3.5.0
v3.5.0a1
v3.5.0b1
v3.5.0b2
v3.5.0b3
v3.5.1
v3.5.2
v3.5.3
v3.5.4
v3.6.0
v3.6.0a0
v3.6.0a1
v3.6.0a10
v3.6.0a11
v3.6.0a12
v3.6.0a2
v3.6.0a3
v3.6.0a4
v3.6.0a5
v3.6.0a6
v3.6.0a7
v3.6.0a8
v3.6.0a9
v3.6.0b0
v3.6.1
v3.6.1b3
v3.6.1b4
v3.6.2
v3.6.2a1
v3.6.2a2
v3.7.0
v3.7.0b0
v3.7.0b1
v3.7.1
v3.8.0
v3.9.0
v3.9.0b0
v3.9.0b1
v3.9.0rc0
v4.*
v4.0.0a0
v4.0.0a1