CVE & CISA-KEV Catalog

CVE-2026-39827

MEDIUM

6.5

CVSS v3

Description

An authenticated SSH client that repeatedly opened channels which were rejected by the server caused unbounded memory growth, eventually crashing the server process and affecting all connected users. Rejected channels are now properly removed from the connection's internal state and released for garbage collection.

How to fix

Remediation Available

containerdAmazon

Fixed in:0:2.2.4-1.amzn2023.0.1

Fixed in:0:2.2.4-1.amzn2023.0.1

containerd-debuginfoAmazon

Fixed in:0:2.2.4-1.amzn2023.0.1

Fixed in:0:2.2.4-1.amzn2023.0.1

containerd-debugsourceAmazon

Fixed in:0:2.2.4-1.amzn2023.0.1

Fixed in:0:2.2.4-1.amzn2023.0.1

containerd-stressAmazon

Fixed in:0:2.2.4-1.amzn2023.0.1

Fixed in:0:2.2.4-1.amzn2023.0.1

containerd-stress-debuginfoAmazon

Fixed in:0:2.2.4-1.amzn2023.0.1

Fixed in:0:2.2.4-1.amzn2023.0.1

nerdctlAmazon

Fixed in:0:2.2.2-1.amzn2.0.3

Fixed in:0:2.2.2-1.amzn2.0.3

Fixed in:0:2.2.2-1.amzn2023.0.3

Fixed in:0:2.2.2-1.amzn2023.0.3

nerdctl-debuginfoAmazon

Fixed in:0:2.2.2-1.amzn2.0.3

Fixed in:0:2.2.2-1.amzn2.0.3

rcloneAmazon

Fixed in:0:1.74.2-80.amzn2023

Fixed in:0:1.74.2-80.amzn2023

rclone-debuginfoAmazon

Fixed in:0:1.74.2-80.amzn2023

Fixed in:0:1.74.2-80.amzn2023

rclone-debugsourceAmazon

Fixed in:0:1.74.2-80.amzn2023

Fixed in:0:1.74.2-80.amzn2023

runfinch-finchAmazon

Fixed in:0:1.17.1-1.amzn2023.0.2

Fixed in:0:1.17.1-1.amzn2023.0.2

golang-go.cryptoDebian

Fixed in:1:0.52.0-1CVE-2026-39827

registry.redhat.io/multiclusterRocky

Fixed in:engine/registration-rhel9@sha256:55c7ed6f934c9d0ed61e529cada40c3b2565cca593d55d93ac3d89e0655c92e9_arm64RHSA-2026:57194

Fixed in:engine/work-rhel9@sha256:7bd1843f74e98c3e113274679f6040a2d18f4f992802524bf69af58c0a25a24f_ppc64leRHSA-2026:57194

Fixed in:engine/placement-rhel9@sha256:f8976870ed5c76e7e996958f4e2423b173889681c5025d6bb0585434bfaf9566_ppc64leRHSA-2026:57194

Fixed in:engine/work-rhel9@sha256:991c6ef2abc9f91e4ed1ea627aa58d639badf4cb48ac46ab6a4c4b83c8dec483_arm64RHSA-2026:57194

Fixed in:engine/hive-rhel9@sha256:c384df4f1c413774cce531a6b03a11276c7736a99fc162e0e7c5dc7fc2318c33_ppc64leRHSA-2026:57194

Fixed in:engine/placement-rhel9@sha256:4c68c5e66aa0bea71d1c3aba845e20a893b5448c8a6ffd1e53ee1a4696acdbb0_arm64RHSA-2026:57194

Fixed in:engine/hive-rhel9@sha256:8884f30adfed58178637ccb133c0b3f73f0fd7813c8af86e362245a5f5ab0ecd_arm64RHSA-2026:57194

Fixed in:engine/discovery-rhel9@sha256:43850784416ed4c8ff8c41eb71382a4a4afb7804d57da0a151e9d90a30fc17e2_arm64RHSA-2026:57194

registry.redhat.io/multiclusterRed Hat / RHEL

Fixed in:engine/placement-rhel9@sha256:f8976870ed5c76e7e996958f4e2423b173889681c5025d6bb0585434bfaf9566_ppc64leRHSA-2026:57194

Fixed in:engine/discovery-rhel9@sha256:7aa7b2802edfce1f31a796d2c46e9bd051ee403ff8d17336d64611faf80c57d3_amd64RHSA-2026:57194

Fixed in:engine/hive-rhel9@sha256:90e4247d9a1ec1ffdabf6b6162095903b6a5187e6a93259d17a8cb6f50a45c4c_amd64RHSA-2026:57194

Fixed in:engine/placement-rhel9@sha256:a0a670fb54ce652f1be3f1d13555e3f7703f811a31bed17b7a35245382635ec3_amd64RHSA-2026:57194

Fixed in:engine/registration-rhel9@sha256:08744839bcffb2d220d1aee9bb596cf387564a1b25e237ec015ef9263cb1cf8f_amd64RHSA-2026:57194

Fixed in:engine/work-rhel9@sha256:009d1d4725a7d3c3f07376e2ce4ed84815feb202228ebf2a9a3943eafe7019ab_amd64RHSA-2026:57194

Fixed in:engine/work-rhel9@sha256:eb41c33a0663f4d1ce6fdb5f142adc87f26dfafbf32d76f436cc90d08297a39a_s390xRHSA-2026:57194

Fixed in:engine/discovery-rhel9@sha256:43850784416ed4c8ff8c41eb71382a4a4afb7804d57da0a151e9d90a30fc17e2_arm64RHSA-2026:57194

registry.redhat.io/multicluster-engine/addonRed Hat / RHEL

Fixed in:manager-rhel9@sha256:3e9e3ef83f3da8d29471e8cc5cc0315f7b02dd44cfaafbd0b27f049d2efcc4a5_ppc64leRHSA-2026:57194

Fixed in:manager-rhel9@sha256:5acf929f44e14e1a1d229e0a4d0e0d68c592654435d0a7ea234c23d88e7da686_s390xRHSA-2026:57194

Fixed in:manager-rhel9@sha256:0451628c58cb6738977a1a5499f204b07e8ab02b41e949b27b263fea3ea61f88_amd64RHSA-2026:57194

Fixed in:manager-rhel9@sha256:ba6c4a20a6ee685c319df030bd2774e9ff9747c0bea02df16c169f85b20e4ca0_arm64RHSA-2026:57194

registry.redhat.io/multicluster-engine/addonRocky

Fixed in:manager-rhel9@sha256:0451628c58cb6738977a1a5499f204b07e8ab02b41e949b27b263fea3ea61f88_amd64RHSA-2026:57194

Fixed in:manager-rhel9@sha256:5acf929f44e14e1a1d229e0a4d0e0d68c592654435d0a7ea234c23d88e7da686_s390xRHSA-2026:57194

Fixed in:manager-rhel9@sha256:3e9e3ef83f3da8d29471e8cc5cc0315f7b02dd44cfaafbd0b27f049d2efcc4a5_ppc64leRHSA-2026:57194

Fixed in:manager-rhel9@sha256:ba6c4a20a6ee685c319df030bd2774e9ff9747c0bea02df16c169f85b20e4ca0_arm64RHSA-2026:57194

registry.redhat.io/multicluster-engine/azure-serviceRed Hat / RHEL

Fixed in:operator-rhel9@sha256:49774c069cd6a4f2b3850039ae338fa0ff1da3f29a42990a863b6c93dfa30a42_ppc64leRHSA-2026:57194

Fixed in:operator-rhel9@sha256:0f5af66d650b218e30c57aad3bd4d6c9d978a5fee42f5a8e4c3d6b792282cd9b_arm64RHSA-2026:57194

Fixed in:operator-rhel9@sha256:de79fc015730adf4dce460ea07cdabc89b31537a36831bd85a3ed3cc0683307c_s390xRHSA-2026:57194

Fixed in:operator-rhel9@sha256:f480a9edc21d0cf6d2358a6847796ad8438bdb05151c1a263cbd61373b18908d_amd64RHSA-2026:57194

registry.redhat.io/multicluster-engine/azure-serviceRocky

Fixed in:operator-rhel9@sha256:0f5af66d650b218e30c57aad3bd4d6c9d978a5fee42f5a8e4c3d6b792282cd9b_arm64RHSA-2026:57194

Fixed in:operator-rhel9@sha256:f480a9edc21d0cf6d2358a6847796ad8438bdb05151c1a263cbd61373b18908d_amd64RHSA-2026:57194

Fixed in:operator-rhel9@sha256:de79fc015730adf4dce460ea07cdabc89b31537a36831bd85a3ed3cc0683307c_s390xRHSA-2026:57194

Fixed in:operator-rhel9@sha256:49774c069cd6a4f2b3850039ae338fa0ff1da3f29a42990a863b6c93dfa30a42_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/backplaneRocky

Fixed in:rhel9-operator@sha256:ded50b49b8d04d0ffb844216115f7bee6ba3a10a6c03ece119335f644b2b0f54_s390xRHSA-2026:57194

Fixed in:rhel9-operator@sha256:5df15f8fe0f01ad4400f505bcbbeb38ac4389a2f7efce2852c94e088c742bc6e_ppc64leRHSA-2026:57194

Fixed in:rhel9-operator@sha256:27a860976c6e2d3839bd7748d55d3803fd3bd25363d54ee6c50f5fe56ef343d4_arm64RHSA-2026:57194

Fixed in:rhel9-operator@sha256:77241ec4ce514b53eea74ecc7f7c53e59f9f992e8f9383e854ee8e78c7b0ef67_amd64RHSA-2026:57194

registry.redhat.io/multicluster-engine/backplaneRed Hat / RHEL

Fixed in:rhel9-operator@sha256:ded50b49b8d04d0ffb844216115f7bee6ba3a10a6c03ece119335f644b2b0f54_s390xRHSA-2026:57194

Fixed in:rhel9-operator@sha256:27a860976c6e2d3839bd7748d55d3803fd3bd25363d54ee6c50f5fe56ef343d4_arm64RHSA-2026:57194

Fixed in:rhel9-operator@sha256:77241ec4ce514b53eea74ecc7f7c53e59f9f992e8f9383e854ee8e78c7b0ef67_amd64RHSA-2026:57194

Fixed in:rhel9-operator@sha256:5df15f8fe0f01ad4400f505bcbbeb38ac4389a2f7efce2852c94e088c742bc6e_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/capoaRed Hat / RHEL

Fixed in:bootstrap-rhel9@sha256:da3299e3a8199a200cfbb2eeb0e15f8911573836d2dbde73a55492d5053ae96d_s390xRHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:374732a24d27236906d8de2d39932909aa662c770ede2d0adcffe580c105cda6_amd64RHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:a2f084702f5a1c31f27c7716aedcd617c96fbf1f5f93bebd6ca1d452b91757e7_arm64RHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:6f3fb64d8b881cfbd847af85d193ea4f516925c6249f91ec55084905f4dd3c6a_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/capoaRocky

Fixed in:bootstrap-rhel9@sha256:374732a24d27236906d8de2d39932909aa662c770ede2d0adcffe580c105cda6_amd64RHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:da3299e3a8199a200cfbb2eeb0e15f8911573836d2dbde73a55492d5053ae96d_s390xRHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:a2f084702f5a1c31f27c7716aedcd617c96fbf1f5f93bebd6ca1d452b91757e7_arm64RHSA-2026:57194

Fixed in:bootstrap-rhel9@sha256:6f3fb64d8b881cfbd847af85d193ea4f516925c6249f91ec55084905f4dd3c6a_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/capoa-controlRed Hat / RHEL

Fixed in:plane-rhel9@sha256:8853c67109f5d998bdb6670599856f61322004cd3f46df2522e7b56b9fe333f9_amd64RHSA-2026:57194

Fixed in:plane-rhel9@sha256:92614c9b2d1df37df37b52ccaac562318d0dd8330c5c650c5bf09f11b228d680_arm64RHSA-2026:57194

Fixed in:plane-rhel9@sha256:126a79bee08f4df0f9dc8327e479768c1066fddad4359416935414933a190556_s390xRHSA-2026:57194

Fixed in:plane-rhel9@sha256:d7e6b3a44df34cb814f6490aa71e6ab0845ca9b51eab226e5f94c17b25f27a0f_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/capoa-controlRocky

Fixed in:plane-rhel9@sha256:126a79bee08f4df0f9dc8327e479768c1066fddad4359416935414933a190556_s390xRHSA-2026:57194

Fixed in:plane-rhel9@sha256:d7e6b3a44df34cb814f6490aa71e6ab0845ca9b51eab226e5f94c17b25f27a0f_ppc64leRHSA-2026:57194

Fixed in:plane-rhel9@sha256:92614c9b2d1df37df37b52ccaac562318d0dd8330c5c650c5bf09f11b228d680_arm64RHSA-2026:57194

Fixed in:plane-rhel9@sha256:8853c67109f5d998bdb6670599856f61322004cd3f46df2522e7b56b9fe333f9_amd64RHSA-2026:57194

registry.redhat.io/multicluster-engine/clusterRed Hat / RHEL

Fixed in:proxy-rhel9@sha256:e9b39e91081a529ccc07091828fa91e47a20bb58bd987965248fad6b4934538c_arm64RHSA-2026:57194

Fixed in:proxy-rhel9@sha256:44353e99606d8e162c09f745c0d31d4e8f7f6d30be34c6c175f5a98884dec8a4_amd64RHSA-2026:57194

Fixed in:proxy-rhel9@sha256:a8f98ad8314ce6f2e4072a67d6e1f1ca2aa0b1924765cf4bf29b5acf694f1625_ppc64leRHSA-2026:57194

Fixed in:proxy-rhel9@sha256:b5746d8817721caa8265ca3d16e77c3c8c9a58f6760c718b797219b0e29fc046_s390xRHSA-2026:57194

registry.redhat.io/multicluster-engine/clusterRocky

Fixed in:proxy-rhel9@sha256:44353e99606d8e162c09f745c0d31d4e8f7f6d30be34c6c175f5a98884dec8a4_amd64RHSA-2026:57194

Fixed in:proxy-rhel9@sha256:e9b39e91081a529ccc07091828fa91e47a20bb58bd987965248fad6b4934538c_arm64RHSA-2026:57194

Fixed in:proxy-rhel9@sha256:b5746d8817721caa8265ca3d16e77c3c8c9a58f6760c718b797219b0e29fc046_s390xRHSA-2026:57194

Fixed in:proxy-rhel9@sha256:a8f98ad8314ce6f2e4072a67d6e1f1ca2aa0b1924765cf4bf29b5acf694f1625_ppc64leRHSA-2026:57194

registry.redhat.io/multicluster-engine/cluster-api-providerRed Hat / RHEL

Fixed in:azure-rhel9@sha256:e239463377781a7d4f3fc46170774e45cda3b1e6ee8fbc9377adebdabfe8131f_s390xRHSA-2026:57194

Fixed in:kubevirt-rhel9@sha256:c054f83158daba6d5ff66047eadad01551198c835edb9a891cf1c95192f3b189_s390xRHSA-2026:57194

Fixed in:kubevirt-rhel9@sha256:60718ffaca7cfa4c7e0714fdf7503b0cd5a68c1b221f1d852c19f420ae559136_ppc64leRHSA-2026:57194

Fixed in:azure-rhel9@sha256:a479141060498df73679681a615b90072b1f90a6f9b3ae08a54e26a9042f16a4_ppc64leRHSA-2026:57194

Fixed in:aws-rhel9@sha256:59c06be711e3f5926f46a1e9e29c9f6ed14594a1385d4d9b37d803e19acc3cb6_ppc64leRHSA-2026:57194

Fixed in:agent-rhel9@sha256:ef5799ee0dbb30b3e5371d34253bf5f8159968d056b09566b746af8bf4473514_ppc64leRHSA-2026:57194

Fixed in:kubevirt-rhel9@sha256:0a45e85f38275a5cd7ee2b59239b2a36cc158aba62597d66675bc56714929445_amd64RHSA-2026:57194

Fixed in:agent-rhel9@sha256:b1dc86fb39953b8099ea5a637eac97a4bd1b2f92d097a52cae77f61dda0dbb1f_s390xRHSA-2026:57194

registry.redhat.io/multicluster-engine/cluster-api-providerRocky

Fixed in:kubevirt-rhel9@sha256:c054f83158daba6d5ff66047eadad01551198c835edb9a891cf1c95192f3b189_s390xRHSA-2026:57194

Fixed in:kubevirt-rhel9@sha256:60718ffaca7cfa4c7e0714fdf7503b0cd5a68c1b221f1d852c19f420ae559136_ppc64leRHSA-2026:57194

Fixed in:azure-rhel9@sha256:a479141060498df73679681a615b90072b1f90a6f9b3ae08a54e26a9042f16a4_ppc64leRHSA-2026:57194

Fixed in:aws-rhel9@sha256:59c06be711e3f5926f46a1e9e29c9f6ed14594a1385d4d9b37d803e19acc3cb6_ppc64leRHSA-2026:57194

Fixed in:agent-rhel9@sha256:ef5799ee0dbb30b3e5371d34253bf5f8159968d056b09566b746af8bf4473514_ppc64leRHSA-2026:57194

Fixed in:agent-rhel9@sha256:71cec7e3da1978e7431c50ab9e2095b57915431f4f66267cc7ac3160ac788d74_amd64RHSA-2026:57194

Fixed in:aws-rhel9@sha256:3288bd73ed35f786de12f386ed341721cbf14ba81854f3907897a787362cc091_amd64RHSA-2026:57194

Fixed in:azure-rhel9@sha256:a7b16f1281100bfd77c25a88f620a8ef917d47af09293af1b04b0af4884e2c80_amd64RHSA-2026:57194

registry.redhat.io/multicluster-engine/cluster-curatorRed Hat / RHEL

Fixed in:controller-rhel9@sha256:c7c0138fd90a11dc72dd59c9499c6224be6461f0a00dfd6fbdbe03d452be2203_ppc64leRHSA-2026:57194

Fixed in:controller-rhel9@sha256:1c799a32c8c147a99c1fea86e7da941e0b2779ddaa3404d7f8f86a7ae62e600a_s390xRHSA-2026:57194

Fixed in:controller-rhel9@sha256:a143d59ea8dba9a4a465becd9be1ca84674d61ca270be8dc01beeba9a69d5df8_amd64RHSA-2026:57194

Fixed in:controller-rhel9@sha256:11ec7a9737fb7a20da1dbf96a8a82cc3ea502b81536a5b13cd9cd8ceaecd2e74_arm64RHSA-2026:57194

registry.redhat.io/multicluster-engine/cluster-curatorRocky

Fixed in:controller-rhel9@sha256:a143d59ea8dba9a4a465becd9be1ca84674d61ca270be8dc01beeba9a69d5df8_amd64RHSA-2026:57194

Fixed in:controller-rhel9@sha256:11ec7a9737fb7a20da1dbf96a8a82cc3ea502b81536a5b13cd9cd8ceaecd2e74_arm64RHSA-2026:57194

Fixed in:controller-rhel9@sha256:1c799a32c8c147a99c1fea86e7da941e0b2779ddaa3404d7f8f86a7ae62e600a_s390xRHSA-2026:57194

Fixed in:controller-rhel9@sha256:c7c0138fd90a11dc72dd59c9499c6224be6461f0a00dfd6fbdbe03d452be2203_ppc64leRHSA-2026:57194

This vulnerability affects an unusually large number of packages. The highest-confidence fixes are shown above; the full list is longer. Check the referenced advisories for complete coverage.

TridentStack Control can deploy fixes like this automatically across your Windows, macOS, and Linux fleet. See how it works

Remediation is compiled from vendor and distribution security advisories. Always confirm against the linked source for your exact version and platform.

CVSS v3 Vector

Exploitability

Attack VectorNetwork

Attack ComplexityLow

Privileges RequiredLow

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.28%probability of exploitation in 30 days

20thpercentile

Low risk: more likely to be exploited than 20% of all known CVEs.

References

Vendor Advisory1

pkg.go.dev

Issue Tracking2

Mailing List1

groups.google.com

Related Vulnerabilities

Other CWE-924 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2024-3596	Critical	9.0	15%	-	Fix
CVE-2018-14526	Medium	6.5	1.5%	-	Fix
CVE-2021-21390	Medium	6.5	0.9%	-	Fix
CVE-2022-3166	High	7.5	0.7%	-	-
CVE-2021-3716	Low	3.1	0.6%	-	Fix
CVE-2021-34793	High	8.6	0.6%	-	Fix

Common questions

How do I fix CVE-2026-39827?

Published advisories record a fix for 134 affected products. The "How to fix" section on this page lists the fixed version and source advisory for each one, so apply the entry matching what you actually run.

Is CVE-2026-39827 being actively exploited?

Not that we know of. CVE-2026-39827 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.28% is the estimated probability that it will be exploited in the next 30 days. That is higher than 20% of all scored CVEs.

How severe is CVE-2026-39827?

CVE-2026-39827 has a CVSS v3 base score of 6.5, rated moderate. CVSS rates the technical impact if the vulnerability is exploited, not how likely that is, so weigh it alongside the exploit-prediction score when you decide what to patch first.

What does CVE-2026-39827 affect?

Published advisories record a fix for containerd (Amazon), containerd-debuginfo (Amazon), containerd-debugsource (Amazon), containerd-stress (Amazon), and 130 more. Only products with a sourced advisory are listed, so treat this as what we can cite rather than a complete inventory.

Embed a live status badge for CVE-2026-39827

Markdown

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HTML

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This product uses NVD data but is not endorsed or certified by the NVD. EPSS scores courtesy of FIRST.org (https://www.first.org/epss). Source: CISA KEV Catalog. Data as of 2026-07-23.