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120 vulnerabilities by aio-libs
CVE-2026-111750 (GCVE-0-2026-111750)
Vulnerability from nvd – Published: 2026-10-19 17:06 – Updated: 2026-10-19 17:06
VLAI
EPSS
VEX
Title
AIOHTTP: Pure-Python parser request smuggling
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/9b2734… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111749 (GCVE-0-2026-111749)
Vulnerability from nvd – Published: 2026-10-19 17:04 – Updated: 2026-10-19 17:04
VLAI
EPSS
VEX
Title
AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, although impact is limited when applications do not reflect those cookies to a browser. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-565 - Reliance on Cookies without Validation and Integrity Checking
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/6a07c1… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111748 (GCVE-0-2026-111748)
Vulnerability from nvd – Published: 2026-10-19 17:02 – Updated: 2026-10-19 18:22
VLAI
EPSS
VEX
Title
AIOHTTP: Absolute-form request targets can spoof Request.scheme
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme for security decisions can consequently be tricked into treating an unencrypted connection as encrypted or an encrypted connection as unencrypted. This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 18:21 UTC
CWE
- CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/6d4e7b… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111066 (GCVE-0-2026-111066)
Vulnerability from nvd – Published: 2026-10-19 16:59 – Updated: 2026-10-20 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: File descriptor exhaustion in multipart requests
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 15:10 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/2d9463… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111065 (GCVE-0-2026-111065)
Vulnerability from nvd – Published: 2026-10-19 16:57 – Updated: 2026-10-19 17:35
VLAI
EPSS
VEX
Title
AIOHTTP: Connector pool exhaustion via Max-Age overflow
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Max-Age processing can overflow and skip closing a connection. An attacker can consequently exhaust the connection pool temporarily until garbage collection resolves the connections. This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 17:34 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/9dd8ea… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111064 (GCVE-0-2026-111064)
Vulnerability from nvd – Published: 2026-10-19 16:47 – Updated: 2026-10-19 16:47
VLAI
EPSS
VEX
Title
aiohttp server lacks an initial request/header timeout
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, keepalive timeout handling is absent during the initial portion of a request. An attacker can keep an idle connection open indefinitely before sending any request data, consuming server connection capacity. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/be8468… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111063 (GCVE-0-2026-111063)
Vulnerability from nvd – Published: 2026-10-19 16:44 – Updated: 2026-10-19 16:44
VLAI
EPSS
VEX
Title
AIOHTTP: Secure attribute not enforced for shared cookie
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the Secure attribute for a shared cookie is not enforced. An attacker can consequently cause a shared cookie marked Secure to be sent with an unencrypted request. This issue is fixed in version 3.14.4.
Severity
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/999c35… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-104874 (GCVE-0-2026-104874)
Vulnerability from nvd – Published: 2026-10-02 20:21 – Updated: 2026-10-05 16:25
VLAI
EPSS
VEX
Title
Multidict: Reference leak in CIMultiDict/MultiDict items-view union and subtraction
Summary
Multidict is an implementation of a multidict data structure. From 6.7.0 until 6.9.1, the C extension's items-view reflected union operation, operand | d.items(), in multidict_itemsview_or2_impl and subtraction operation, d.items() - operand, in multidict_itemsview_sub1_impl fail to release new key-identity and value references returned for each operand element. Applications that perform these operations over attacker-influenced sequences can leak two strong references per element, and garbage collection cannot reclaim them, so repeated operations can cause unbounded process memory growth and denial of service. Forward union, intersection, non-tuple operand elements, and pure-Python builds are not affected by this reference leak. This issue is fixed in version 6.9.1.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:25 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/multidict/security/ad… | x_refsource_CONFIRM |
| https://github.com/aio-libs/multidict/commit/350b… | x_refsource_MISC |
| https://github.com/aio-libs/multidict/releases/ta… | x_refsource_MISC |
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CVE-2026-69244 (GCVE-0-2026-69244)
Vulnerability from nvd – Published: 2026-08-03 20:50 – Updated: 2026-08-04 14:13
VLAI
EPSS
VEX
Title
AIOHTTP: Out-of-bounds heap read in C HTTP response parser error path (malformed chunked response)
Summary
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 and malformed request or response bytes at the buffer end. This issue is fixed in version 3.14.3.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 14:13 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/13223 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/49f65d… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-69243 (GCVE-0-2026-69243)
Vulnerability from nvd – Published: 2026-08-03 20:45 – Updated: 2026-08-05 14:54
VLAI
EPSS
VEX
Title
AIOHTTP: HTTP request smuggling via WebSocket upgrade
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. A WebSocket upgrade request with a body could cause the parser to switch protocols before the complete request body was received, leaving trailing bytes to be handled as upgraded-protocol or pipelined data rather than normal HTTP body data. This issue is fixed in version 3.14.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:53 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/13017 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/6ae358… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-59881 (GCVE-0-2026-59881)
Vulnerability from nvd – Published: 2026-07-30 17:34 – Updated: 2026-07-30 18:35
VLAI
EPSS
VEX
Title
AIOHTTP: WebSocket client accepts compressed frames without negotiated permessage-deflate
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 18:35 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/12978 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/47fb6a… | x_refsource_MISC |
| http://github.com/aio-libs/aiohttp/releases/tag/v3.14.2 | x_refsource_MISC |
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CVE-2026-54280 (GCVE-0-2026-54280)
Vulnerability from nvd – Published: 2026-06-22 16:40 – Updated: 2026-06-22 18:18
VLAI
EPSS
VEX
Title
AIOHTTP: Payload Response Resources Are Not Closed After Mid-Body Disconnect
Summary
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Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 18:15 UTC
CWE
- CWE-404 - Improper Resource Shutdown or Release
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/a762ed… | x_refsource_MISC |
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CVE-2026-54279 (GCVE-0-2026-54279)
Vulnerability from nvd – Published: 2026-06-22 16:32 – Updated: 2026-06-22 17:40
VLAI
EPSS
VEX
Title
AIOHTTP: Host-Only Cookies Become Domain Cookies After CookieJar Persistence
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, host-only cookies that are saved with CookieJar.save() and then restored later with CookieJar.load() lose their host-only status. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:40 UTC
CWE
- CWE-665 - Improper Initialization
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/a329a7… | x_refsource_MISC |
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CVE-2026-54278 (GCVE-0-2026-54278)
Vulnerability from nvd – Published: 2026-06-22 16:38 – Updated: 2026-06-23 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: Unread Compressed Request Bodies Bypass client_max_size During Cleanup
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 13:51 UTC
CWE
- CWE-409 - Improper Handling of Highly Compressed Data (Data Amplification)
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/4f7480… | x_refsource_MISC |
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CVE-2026-54277 (GCVE-0-2026-54277)
Vulnerability from nvd – Published: 2026-06-22 16:37 – Updated: 2026-06-23 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: C HTTP Parser Bypasses max_line_size for Fragmented Lines
Summary
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.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 14:48 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
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|---|---|
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CVE-2026-54276 (GCVE-0-2026-54276)
Vulnerability from nvd – Published: 2026-06-22 16:36 – Updated: 2026-06-23 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: DigestAuthMiddleware Applies Credentials to Cross-Origin Redirect Challenges
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, DigestAuthMiddleware can send an authentication response after following a cross-origin redirect. This likely requires an open redirect vulnerability or similar on the target domain for an attacker to be able to execute. Further, the attacker is only receiving the digest, so should only be able to extract the user's credentials if the cryptography is weak or there is some kind of password reuse. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-23 16:06 UTC
CWE
Assigner
References
2 references
| URL | Tags |
|---|---|
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CVE-2026-54275 (GCVE-0-2026-54275)
Vulnerability from nvd – Published: 2026-06-22 16:34 – Updated: 2026-06-22 17:27
VLAI
EPSS
VEX
Title
AIOHTTP: TLS Server Hostname Override Is Ignored When Reusing HTTPS Connections
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, the server_hostname TLS SNI check can be bypassed when an existing connection is reused. If an application makes multiple requests to the same domain, but with different per-request server_hostname parameters, then the later calls may succeed by reusing the existing connection when they should have been rejected due to the TLS SNI check. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:27 UTC
CWE
- CWE-297 - Improper Validation of Certificate with Host Mismatch
Assigner
References
1 reference
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
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CVE-2026-54274 (GCVE-0-2026-54274)
Vulnerability from nvd – Published: 2026-06-22 16:33 – Updated: 2026-06-22 18:14
VLAI
EPSS
VEX
Title
AIOHTTP: Incomplete websocket frame payloads bypass memory limits
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, if an attacker sends large incomplete websocket frame payloads, it may be possible to bypass the usual size limits on memory use. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 18:11 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/14b6ee… | x_refsource_MISC |
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CVE-2026-54273 (GCVE-0-2026-54273)
Vulnerability from nvd – Published: 2026-06-22 16:41 – Updated: 2026-06-22 17:38
VLAI
EPSS
VEX
Title
AIOHTTP: HTTP/1 Pipelined Requests Queue Without Limit
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.1, no limit was present on the number of pipelined requests that could be queued. An attacker may be able to use pipelined requests to use excessive amounts of memory, potentially leading to DoS. This vulnerability is fixed in 3.14.1.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-06-22 17:37 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
2 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/dfdfa9… | x_refsource_MISC |
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CVE-2026-111750 (GCVE-0-2026-111750)
Vulnerability from cvelistv5 – Published: 2026-10-19 17:06 – Updated: 2026-10-19 17:06
VLAI
EPSS
VEX
Title
AIOHTTP: Pure-Python parser request smuggling
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the pure Python parser accepts ambiguous HTTP request framing. An unauthenticated attacker can consequently smuggle requests when an application uses AIOHTTP_NO_EXTENSIONS or otherwise runs without a standard wheel and an intermediary interprets the framing differently. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/9b2734… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111749 (GCVE-0-2026-111749)
Vulnerability from cvelistv5 – Published: 2026-10-19 17:04 – Updated: 2026-10-19 17:04
VLAI
EPSS
VEX
Title
AIOHTTP: Cookie from subdomain can remove Host-Only Scope from existing cookies
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Host-Only scope on an existing parent-domain cookie can be removed by a subdomain. A user who accesses an untrusted subdomain can consequently have host-only protections stripped from cookies, although impact is limited when applications do not reflect those cookies to a browser. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-565 - Reliance on Cookies without Validation and Integrity Checking
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/6a07c1… | x_refsource_MISC |
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CVE-2026-111748 (GCVE-0-2026-111748)
Vulnerability from cvelistv5 – Published: 2026-10-19 17:02 – Updated: 2026-10-19 18:22
VLAI
EPSS
VEX
Title
AIOHTTP: Absolute-form request targets can spoof Request.scheme
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, an attacker can send an absolute-form request that causes Request.scheme to use attacker-controlled request-target scheme data instead of the connection protocol. Applications that use Request.scheme for security decisions can consequently be tricked into treating an unencrypted connection as encrypted or an encrypted connection as unencrypted. This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 18:21 UTC
CWE
- CWE-807 - Reliance on Untrusted Inputs in a Security Decision
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/6d4e7b… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111066 (GCVE-0-2026-111066)
Vulnerability from cvelistv5 – Published: 2026-10-19 16:59 – Updated: 2026-10-20 16:10
VLAI
EPSS
VEX
Title
AIOHTTP: File descriptor exhaustion in multipart requests
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. From 2.0.0 until 3.14.4, multipart request processing can retain an unbounded number of open file descriptors. An unauthenticated attacker can consequently exhaust file descriptors with specially crafted multipart requests when a handler uses Request.post(). This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-20 15:10 UTC
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/2d9463… | x_refsource_MISC |
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CVE-2026-111065 (GCVE-0-2026-111065)
Vulnerability from cvelistv5 – Published: 2026-10-19 16:57 – Updated: 2026-10-19 17:35
VLAI
EPSS
VEX
Title
AIOHTTP: Connector pool exhaustion via Max-Age overflow
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, Max-Age processing can overflow and skip closing a connection. An attacker can consequently exhaust the connection pool temporarily until garbage collection resolves the connections. This issue is fixed in version 3.14.4.
Severity
SSVC
Exploitation: none
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-19 17:34 UTC
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/9dd8ea… | x_refsource_MISC |
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CVE-2026-111064 (GCVE-0-2026-111064)
Vulnerability from cvelistv5 – Published: 2026-10-19 16:47 – Updated: 2026-10-19 16:47
VLAI
EPSS
VEX
Title
aiohttp server lacks an initial request/header timeout
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, keepalive timeout handling is absent during the initial portion of a request. An attacker can keep an idle connection open indefinitely before sending any request data, consuming server connection capacity. This issue is fixed in version 3.14.4.
Severity
CWE
- CWE-770 - Allocation of Resources Without Limits or Throttling
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/be8468… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-111063 (GCVE-0-2026-111063)
Vulnerability from cvelistv5 – Published: 2026-10-19 16:44 – Updated: 2026-10-19 16:44
VLAI
EPSS
VEX
Title
AIOHTTP: Secure attribute not enforced for shared cookie
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.4, the Secure attribute for a shared cookie is not enforced. An attacker can consequently cause a shared cookie marked Secure to be sent with an unencrypted request. This issue is fixed in version 3.14.4.
Severity
CWE
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/commit/999c35… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-104874 (GCVE-0-2026-104874)
Vulnerability from cvelistv5 – Published: 2026-10-02 20:21 – Updated: 2026-10-05 16:25
VLAI
EPSS
VEX
Title
Multidict: Reference leak in CIMultiDict/MultiDict items-view union and subtraction
Summary
Multidict is an implementation of a multidict data structure. From 6.7.0 until 6.9.1, the C extension's items-view reflected union operation, operand | d.items(), in multidict_itemsview_or2_impl and subtraction operation, d.items() - operand, in multidict_itemsview_sub1_impl fail to release new key-identity and value references returned for each operand element. Applications that perform these operations over attacker-influenced sequences can leak two strong references per element, and garbage collection cannot reclaim them, so repeated operations can cause unbounded process memory growth and denial of service. Forward union, intersection, non-tuple operand elements, and pure-Python builds are not affected by this reference leak. This issue is fixed in version 6.9.1.
Severity
5.3 (Medium)
SSVC
Exploitation: poc
Automatable: yes
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-10-05 16:25 UTC
CWE
- CWE-401 - Missing Release of Memory after Effective Lifetime
Assigner
References
3 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/multidict/security/ad… | x_refsource_CONFIRM |
| https://github.com/aio-libs/multidict/commit/350b… | x_refsource_MISC |
| https://github.com/aio-libs/multidict/releases/ta… | x_refsource_MISC |
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CVE-2026-69244 (GCVE-0-2026-69244)
Vulnerability from cvelistv5 – Published: 2026-08-03 20:50 – Updated: 2026-08-04 14:13
VLAI
EPSS
VEX
Title
AIOHTTP: Out-of-bounds heap read in C HTTP response parser error path (malformed chunked response)
Summary
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 and malformed request or response bytes at the buffer end. This issue is fixed in version 3.14.3.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-04 14:13 UTC
CWE
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/13223 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/49f65d… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-69243 (GCVE-0-2026-69243)
Vulnerability from cvelistv5 – Published: 2026-08-03 20:45 – Updated: 2026-08-05 14:54
VLAI
EPSS
VEX
Title
AIOHTTP: HTTP request smuggling via WebSocket upgrade
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the HTTP parsers were vulnerable to a request smuggling attack relating to WebSocket upgrades. If using the server-side component, an attacker may be able to execute a request smuggling vulnerability using an edge case in the WebSocket upgrade procedure. A WebSocket upgrade request with a body could cause the parser to switch protocols before the complete request body was received, leaving trailing bytes to be handled as upgraded-protocol or pipelined data rather than normal HTTP body data. This issue is fixed in version 3.14.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-08-05 14:53 UTC
CWE
- CWE-444 - Inconsistent Interpretation of HTTP Requests ('HTTP Request/Response Smuggling')
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/13017 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/6ae358… | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/releases/tag/… | x_refsource_MISC |
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CVE-2026-59881 (GCVE-0-2026-59881)
Vulnerability from cvelistv5 – Published: 2026-07-30 17:34 – Updated: 2026-07-30 18:35
VLAI
EPSS
VEX
Title
AIOHTTP: WebSocket client accepts compressed frames without negotiated permessage-deflate
Summary
AIOHTTP is an asynchronous HTTP client/server framework for asyncio and Python. Prior to 3.14.2, the WebSocket client accepts and decompresses frames with the RSV1 bit set even when the permessage-deflate extension was not negotiated, allowing a malicious server to cause unexpected CPU and memory consumption. This issue is fixed in version 3.14.2.
Severity
SSVC
Exploitation: none
Automatable: no
Technical Impact: partial
CISA Coordinator · CISA-ADP (v2.0.3)
Decision recorded 2026-07-30 18:35 UTC
CWE
- CWE-20 - Improper Input Validation
Assigner
References
4 references
| URL | Tags |
|---|---|
| https://github.com/aio-libs/aiohttp/security/advi… | x_refsource_CONFIRM |
| https://github.com/aio-libs/aiohttp/pull/12978 | x_refsource_MISC |
| https://github.com/aio-libs/aiohttp/commit/47fb6a… | x_refsource_MISC |
| http://github.com/aio-libs/aiohttp/releases/tag/v3.14.2 | x_refsource_MISC |
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