CVE-2026-33487 (GCVE-0-2026-33487)

Vulnerability from cvelistv5 – Published: 2026-03-26 17:17 – Updated: 2026-07-09 12:09
VLAI
Title
goxmldsig has validateSignature Loop Variable Capture Signature Bypass
Summary
goxmlsig provides XML Digital Signatures implemented in Go. Prior to version 1.6.0, the `validateSignature` function in `validate.go` goes through the references in the `SignedInfo` block to find one that matches the signed element's ID. In Go versions before 1.22, or when `go.mod` uses an older version, there is a loop variable capture issue. The code takes the address of the loop variable `_ref` instead of its value. As a result, if more than one reference matches the ID or if the loop logic is incorrect, the `ref` pointer will always end up pointing to the last element in the `SignedInfo.References` slice after the loop. goxmlsig version 1.6.0 contains a patch.
Severity
7.5 (High)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
SSVC
Exploitation: poc Automatable: yes Technical Impact: partial
CISA Coordinator (v2.0.3)
CWE
  • CWE-347 - Improper Verification of Cryptographic Signature
  • CWE-682 - Incorrect Calculation
Assigner
References
Impacted products
Vendor Product Version
russellhaering goxmldsig Affected: < 1.6.0
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Red Hat Multicluster Global Hub 1.3.4     cpe:/a:redhat:multicluster_globalhub:1.3::el9
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Red Hat Multicluster Global Hub 1.4.5     cpe:/a:redhat:multicluster_globalhub:1.4::el9
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Red Hat Multicluster Global Hub 1.5.4     cpe:/a:redhat:multicluster_globalhub:1.5::el9
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Red Hat Multicluster Global Hub 1.6.2     cpe:/a:redhat:multicluster_globalhub:1.6::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.14     cpe:/a:redhat:acm:2.14::el9
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Red Hat Red Hat Advanced Cluster Management for Kubernetes 2.15     cpe:/a:redhat:acm:2.15::el9
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Red Hat Red Hat OpenShift GitOps 1.18     cpe:/a:redhat:openshift_gitops:1.18::el8
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Red Hat Red Hat OpenShift GitOps 1.19     cpe:/a:redhat:openshift_gitops:1.19::el8
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Red Hat Red Hat Advanced Cluster Security 4     cpe:/a:redhat:advanced_cluster_security:4
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Red Hat Red Hat Enterprise Linux 10     cpe:/o:redhat:enterprise_linux:10
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Red Hat Red Hat Enterprise Linux 8     cpe:/o:redhat:enterprise_linux:8
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Red Hat Red Hat Enterprise Linux 9     cpe:/o:redhat:enterprise_linux:9
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  }
}



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Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

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.