Vulnerability-Lookup

OPENSUSE-SU-2026:21687-1

Vulnerability from csaf_opensuse - Published: 2026-08-30 14:37 - Updated: 2026-08-30 14:37

Summary

Security update for python-aiohttp

Severity

Moderate

Notes

Title of the patch: Security update for python-aiohttp

Description of the patch: This update for python-aiohttp fixes the following issues: - CVE-2026-59881: excessive resource consumption due to WebSocket client accepting compressed frames without negotiated permessage-deflate (bsc#1273125). - CVE-2026-69243: HTTP request smuggling via the WebSocket upgrade procedure (bsc#1273553). - CVE-2026-69244: out-of-bounds heap read in the C response parser while building an error message for a malformed response (bsc#1273552).

Patchnames: openSUSE-Leap-16.0-1543

CVE-2026-59881

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:L

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-69243

5.3 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:L/A:N

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.x86_64	—	Vendor Fix

Threats

Impact moderate

CVE-2026-69244

6.5 (Medium)


                        
                          CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H

Affected products

Recommended 4 products

Product	Version	Remediation
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.aarch64	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.ppc64le	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.s390x	—	Vendor Fix
Unresolved product id: openSUSE Leap 16.0:python313-aiohttp-3.11.16-160000.7.1.x86_64	—	Vendor Fix

Threats

Impact moderate

References

14 references

URL	Category
https://www.suse.com/support/security/rating/	external
https://ftp.suse.com/pub/projects/security/csaf/o…	self
https://bugzilla.suse.com/1273125	self
https://bugzilla.suse.com/1273552	self
https://bugzilla.suse.com/1273553	self
https://www.suse.com/security/cve/CVE-2026-59881/	self
https://www.suse.com/security/cve/CVE-2026-69243/	self
https://www.suse.com/security/cve/CVE-2026-69244/	self
https://www.suse.com/security/cve/CVE-2026-59881	external
https://bugzilla.suse.com/1273125	external
https://www.suse.com/security/cve/CVE-2026-69243	external
https://bugzilla.suse.com/1273553	external
https://www.suse.com/security/cve/CVE-2026-69244	external
https://bugzilla.suse.com/1273552	external

JSON

To clipboard

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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

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

6.9 (Medium)


                        
                          CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:L/SC:N/SI:N/SA:N

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

GitHub_M mitre root

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

Impacted products

1 product

Vendor	Product	Version
aio-libs	aiohttp	Affected: < 3.14.2

Show details on NVD website

JSON

To clipboard

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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

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

6.3 (Medium)


                        
                          CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N

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

GitHub_M mitre root

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

Impacted products

1 product

Vendor	Product	Version
aio-libs	aiohttp	Affected: < 3.14.2

Show details on NVD website

JSON

To clipboard

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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

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

7.1 (High)


                        
                          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

SSVC

Exploitation: none Automatable: no Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-08-04 14:13 UTC

CWE

CWE-400 - Uncontrolled Resource Consumption
CWE-416 - Use After Free
CWE-125 - Out-of-bounds Read

Assigner

GitHub_M mitre root

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

Impacted products

1 product

Vendor	Product	Version
aio-libs	aiohttp	Affected: < 3.14.3

Show details on NVD website

JSON

To clipboard

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Sightings

Author	Source	Type	Date	Other

Nomenclature

Seen: The vulnerability was mentioned, discussed, or observed by the user.
Confirmed: The vulnerability has been validated from an analyst's perspective.
Published Proof of Concept: A public proof of concept is available for this vulnerability.
Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
Not confirmed: The user expressed doubt about the validity of the vulnerability.
Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.

Detection rules are retrieved from Rulezet.

The MITRE ATT&CK techniques below are AI-generated suggestions, inferred from the description of the vulnerability by the CIRCL/vulnerability-attack-technique-classification-roberta-base model, served locally by ML-Gateway. They have not been verified by an analyst and are provided for guidance only.
The approach is described in our paper Mapping CVEs to MITRE ATT&CK Techniques: A Curated Gold-Set Classifier and the Limits of LLM-Assisted Label Expansion.

Action not permitted

OPENSUSE-SU-2026:21687-1

CVE-2026-59881 (GCVE-0-2026-59881)

CVE-2026-69243 (GCVE-0-2026-69243)

CVE-2026-69244 (GCVE-0-2026-69244)

Tags

Sightings

Nomenclature