CVE-2026-56852

HIGH

7.5

CVSS v3

NVD

Description

A norm.Iter can enter an infinite loop when handling input containing invalid UTF-8 bytes.

CWE-835

How to fix

Remediation Available

golang-golang-x-textDebian

Fixed in:0.40.0-1CVE-2026-56852

golang.org/x/textGo

Fixed in:0.39.0GO-2026-5970

buildahRed Hat / RHEL

Fixed in:main@aarch64RHSA-2026:51065

Fixed in:main@x86_64RHSA-2026:49360

Fixed in:main@aarch64RHSA-2026:49360

Fixed in:main@srcRHSA-2026:49360

Fixed in:main@srcRHSA-2026:51065

Fixed in:main@x86_64RHSA-2026:51065

buildahRocky

Fixed in:main@aarch64RHSA-2026:51065

Fixed in:main@x86_64RHSA-2026:51065

Fixed in:main@x86_64RHSA-2026:49360

Fixed in:main@aarch64RHSA-2026:49360

Fixed in:main@srcRHSA-2026:49360

Fixed in:main@srcRHSA-2026:51065

cosignRed Hat / RHEL

Fixed in:main@aarch64RHSA-2026:54364

Fixed in:main@srcRHSA-2026:54364

Fixed in:main@x86_64RHSA-2026:54364

cosignRocky

Fixed in:main@aarch64RHSA-2026:54364

Fixed in:main@srcRHSA-2026:54364

Fixed in:main@x86_64RHSA-2026:54364

flightctlRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el9RHSA-2026:68335

Fixed in:0:1.1.4-1.el9emRHSA-2026:68334

flightctlRed Hat / RHEL

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.1.4-1.el9emRHSA-2026:68334

Fixed in:0:1.2.1-1.el9RHSA-2026:68335

flightctl-agentRed Hat / RHEL

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

flightctl-agentRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

flightctl-cliRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

flightctl-cliRed Hat / RHEL

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

flightctl-observabilityRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

flightctl-observabilityRed Hat / RHEL

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

flightctl-selinuxRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.1.4-1.el9emRHSA-2026:68334

Fixed in:0:1.2.1-1.el9RHSA-2026:68335

flightctl-selinuxRed Hat / RHEL

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el9emRHSA-2026:68334

Fixed in:0:1.2.1-1.el9RHSA-2026:68335

flightctl-servicesRed Hat / RHEL

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

flightctl-servicesRocky

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

Fixed in:0:1.2.1-1.el10RHSA-2026:68335

Fixed in:0:1.1.4-1.el10emRHSA-2026:68334

hugoRed Hat / RHEL

Fixed in:main@x86_64RHSA-2026:54549

Fixed in:main@aarch64RHSA-2026:54549

Fixed in:main@srcRHSA-2026:54549

hugoRocky

Fixed in:main@srcRHSA-2026:54549

Fixed in:main@x86_64RHSA-2026:54549

Fixed in:main@aarch64RHSA-2026:54549

prometheus3Red Hat / RHEL

Fixed in:13-main@srcRHSA-2026:49317

Fixed in:13-main@x86_64RHSA-2026:49317

Fixed in:13-main@aarch64RHSA-2026:49317

prometheus3Rocky

Fixed in:13-main@aarch64RHSA-2026:49317

Fixed in:13-main@x86_64RHSA-2026:49317

Fixed in:13-main@srcRHSA-2026:49317

registry.redhat.io/cert-manager/cert-managerRed Hat / RHEL

Fixed in:operator-rhel9@sha256:636dd466ed2874ecc0bc5985dd7c80eb4c4113b4a4989362b616ff7778e19e43_arm64RHSA-2026:63135

Fixed in:operator-rhel9@sha256:6d393c5b9c5a8654da146d816dac94258d5c085d6e1ac9fd15656ae934ca4b38_amd64RHSA-2026:63135

Fixed in:operator-rhel9@sha256:8226f7b24be576cb215a445dc0366e80e4b81b630478390be66c18306116883d_ppc64leRHSA-2026:63135

Fixed in:operator-rhel9@sha256:99237a55d691dc7906e85773a06ad519f3b9e6206aa74c9014aa1136cabc6c78_s390xRHSA-2026:63135

registry.redhat.io/cert-manager/cert-managerRocky

Fixed in:operator-rhel9@sha256:99237a55d691dc7906e85773a06ad519f3b9e6206aa74c9014aa1136cabc6c78_s390xRHSA-2026:63135

Fixed in:operator-rhel9@sha256:6d393c5b9c5a8654da146d816dac94258d5c085d6e1ac9fd15656ae934ca4b38_amd64RHSA-2026:63135

Fixed in:operator-rhel9@sha256:636dd466ed2874ecc0bc5985dd7c80eb4c4113b4a4989362b616ff7778e19e43_arm64RHSA-2026:63135

Fixed in:operator-rhel9@sha256:8226f7b24be576cb215a445dc0366e80e4b81b630478390be66c18306116883d_ppc64leRHSA-2026:63135

registry.redhat.io/cert-manager/jetstack-certRocky

Fixed in:manager-rhel9@sha256:cdb8e7edf0a0438cd8578bedea2e0a4bef66276ac51e20912da5d8ad6d82e266_ppc64leRHSA-2026:63138

Fixed in:manager-rhel9@sha256:4d12a56f417d74bba1bd339f05f4b4cfa2a48fd3e0957c51353a6de3f21f4fa8_amd64RHSA-2026:63138

Fixed in:manager-rhel9@sha256:afbe54974b9b3bc95455f16baad7e44e629eeb5a4ead75d74b30ac43359937fe_arm64RHSA-2026:63138

Fixed in:manager-rhel9@sha256:97c32b60fc77d27a05fe3ef130d9b69554c793d9df70e0b524d88a5d61254482_s390xRHSA-2026:63138

registry.redhat.io/cert-manager/jetstack-certRed Hat / RHEL

Fixed in:manager-rhel9@sha256:afbe54974b9b3bc95455f16baad7e44e629eeb5a4ead75d74b30ac43359937fe_arm64RHSA-2026:63138

Fixed in:manager-rhel9@sha256:4d12a56f417d74bba1bd339f05f4b4cfa2a48fd3e0957c51353a6de3f21f4fa8_amd64RHSA-2026:63138

Fixed in:manager-rhel9@sha256:97c32b60fc77d27a05fe3ef130d9b69554c793d9df70e0b524d88a5d61254482_s390xRHSA-2026:63138

Fixed in:manager-rhel9@sha256:cdb8e7edf0a0438cd8578bedea2e0a4bef66276ac51e20912da5d8ad6d82e266_ppc64leRHSA-2026:63138

registry.redhat.io/cert-manager/jetstack-cert-managerRocky

Fixed in:acmesolver-rhel9@sha256:75e764fa7c8af058297efcf6c0b1599cbdb244e15fbe76530429d43b1b168dd2_ppc64leRHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:f3d617c66947b62a6ff65e68ca48d2ea80d3eb343bcbd245c150fe355d91b534_arm64RHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:71c8d77b5e9ad20eea144b431446f29795a7788a31401ebead4290455cce2b5a_amd64RHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:03d6509e8064ac056a47ca9ab43df0639236f09806cd551f13a0e808f469c0ee_s390xRHSA-2026:63138

registry.redhat.io/cert-manager/jetstack-cert-managerRed Hat / RHEL

Fixed in:acmesolver-rhel9@sha256:03d6509e8064ac056a47ca9ab43df0639236f09806cd551f13a0e808f469c0ee_s390xRHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:75e764fa7c8af058297efcf6c0b1599cbdb244e15fbe76530429d43b1b168dd2_ppc64leRHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:f3d617c66947b62a6ff65e68ca48d2ea80d3eb343bcbd245c150fe355d91b534_arm64RHSA-2026:63138

Fixed in:acmesolver-rhel9@sha256:71c8d77b5e9ad20eea144b431446f29795a7788a31401ebead4290455cce2b5a_amd64RHSA-2026:63138

registry.redhat.io/cluster-observabilityRed Hat / RHEL

Fixed in:operator/prometheus-rhel9@sha256:ba963271dda3bf3cb1e326a0af07c281c89e0cd1ba04e5d35886a90ee6372dde_arm64RHSA-2026:61314

Fixed in:operator/alertmanager-rhel9@sha256:c2a60557eb2d933f41dc42c1b5116d3e9b27592e91a5839f142999cc9e5c49ee_arm64RHSA-2026:61314

Fixed in:operator/perses-rhel9@sha256:40534afd7af89f72465580eda4d731a9ae47f6b3e126187b0fd4ffa7667bc75e_s390xRHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:79f4fc6e9d70186e0cb84650e9445b0a0349170fca65f82338e110836d07a838_ppc64leRHSA-2026:61314

Fixed in:operator/korrel8r-rhel9@sha256:7991014409d5192eb9712bed519fb503230ac1d6e1c6892bca9813dfd5417378_amd64RHSA-2026:61314

Fixed in:operator/perses-rhel9@sha256:8e2e7d82bb5ac1456e8cff1260c4bc82bd68a3718a1e5c53e12e8fccb8b4d20c_arm64RHSA-2026:61314

Fixed in:operator/korrel8r-rhel9@sha256:36d58edd2a61d76d2d84bfb13cfb892ea1d14fc5fb07602c6f4b050a0ec01509_s390xRHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:87b54fd69b87f7145e1340ac1e43183ade3c19ac7b8dd240f307c985885b6751_s390xRHSA-2026:61314

registry.redhat.io/cluster-observabilityRocky

Fixed in:operator/prometheus-rhel9@sha256:ba963271dda3bf3cb1e326a0af07c281c89e0cd1ba04e5d35886a90ee6372dde_arm64RHSA-2026:61314

Fixed in:operator/perses-rhel9@sha256:97031c73069fbf2fc59ef4afc599233be3ec3fe3cb4238a750eb4dba7d741fbf_amd64RHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:5b53a6cd089aea290f017a6085e5f171bab22fc2143a6d7876ee4d386890370c_amd64RHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:79f4fc6e9d70186e0cb84650e9445b0a0349170fca65f82338e110836d07a838_ppc64leRHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:79b9a6abbc1d78e4ae55e89c628513b44d31c3ea51f6be7e65564333a32b7cf4_arm64RHSA-2026:61314

Fixed in:operator/korrel8r-rhel9@sha256:36d58edd2a61d76d2d84bfb13cfb892ea1d14fc5fb07602c6f4b050a0ec01509_s390xRHSA-2026:61314

Fixed in:operator/alertmanager-rhel9@sha256:c2a60557eb2d933f41dc42c1b5116d3e9b27592e91a5839f142999cc9e5c49ee_arm64RHSA-2026:61314

Fixed in:operator/thanos-rhel9@sha256:87b54fd69b87f7145e1340ac1e43183ade3c19ac7b8dd240f307c985885b6751_s390xRHSA-2026:61314

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 RequiredNone

User InteractionNone

ScopeUnchanged

Impact

ConfidentialityNone

IntegrityNone

AvailabilityHigh

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

Exploit Intelligence

0.47%probability of exploitation in 30 days

40thpercentile

Moderate risk: more likely to be exploited than 40% of all known CVEs.

References

Other references3

Related Vulnerabilities

Other CWE-835 vulnerabilities, ordered by exploit likelihood. View all

CVE	Severity	CVSS	EPSS	Exploited	Fix
CVE-2020-13935	High	7.5	87%	-	Fix
CVE-2020-36227	High	7.5	78%	-	Fix
CVE-2022-0778	High	7.5	73%	-	Fix
CVE-2024-20353	High	8.6	71%	KEV	-
CVE-2019-14241	High	7.5	70%	-	-
CVE-2017-16944	High	7.5	63%	-	Fix

Common questions

How do I fix CVE-2026-56852?

Published advisories record a fix for 228 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-2026-56852 being actively exploited?

Not that we know of. CVE-2026-56852 is not in the CISA Known Exploited Vulnerabilities catalog. Its EPSS score of 0.47% is the estimated probability that it will be exploited in the next 30 days. That is higher than 40% of all scored CVEs.

How severe is CVE-2026-56852?

CVE-2026-56852 has a CVSS v3 base score of 7.5, rated important. 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-2026-56852 affect?

Published advisories record a fix for golang-golang-x-text (Debian), golang.org/x/text (Go), buildah (Red Hat / RHEL), buildah (Rocky), and 224 more. The list on this page is capped, so there may be more.

Embed a live status badge for CVE-2026-56852

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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.