Vulnerability-Lookup

RHSA-2026:3723

Vulnerability from csaf_redhat - Published: 2026-03-04 08:59 - Updated: 2026-09-20 12:07

Summary

Red Hat Security Advisory: Red Hat OpenShift Pipelines Release 1.15.4

Severity

Important

Notes

Topic: The 1.15.4 GA release of Red Hat OpenShift Pipelines Operator.. For more details see [product documentation](https://docs.redhat.com/en/documentation/red_hat_openshift_pipelines).

Details: The 1.15.4 release of Red Hat OpenShift Pipelines Operator.

Terms of Use: This content is licensed under the Creative Commons Attribution 4.0 International License (https://creativecommons.org/licenses/by/4.0/). If you distribute this content, or a modified version of it, you must provide attribution to Red Hat Inc. and provide a link to the original.

CVE-2025-66506

A flaw was found in Fulcio, a free-to-use certificate authority. This vulnerability allows a denial of service (DoS) due to excessive memory allocation when processing a malicious OpenID Connect (OIDC) identity token containing numerous period characters.

7.5 (High)


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

CWE-405 - Asymmetric Resource Consumption (Amplification)

Affected products

Fixed 9 products

Product	Version	Remediation
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-bundle@sha256:29e53c58884174c78c5b86c8f63024f4643c9b5f90e476eddd5fd4725855a0d4_amd64	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:682728a8ecb86109fbcc407e7ac4114d7993ed9acc11bb49f7761197a4965ad9_s390x	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:74dd0d15fdcf95ac1eedea4dafc45598dda258fec28831acc95f2d2784804a04_ppc64le	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:9d33602222295d4ecab52e990e0af7ae5f84e094721c2afaea1ddca904a91ae2_arm64	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:a914252e2e10112e151571221a7f6b9db43d4584b8b906a960df4d6f358dcfb9_amd64	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-rhel8-operator@sha256:19a36e841519488d5895b999f84bffd8200c16b026f769ac72919296c65cc136_arm64	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-rhel8-operator@sha256:2aa9f0a7afddf5e2ad7c642eb72a874c4d7e5a092828753da19e657fb6db69cb_s390x	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-rhel8-operator@sha256:61301a05842875ebaafe19ed7c426b22b014e4ea9ba0a5ff3c12e1b8fb03d97d_ppc64le	—	Vendor Fix fix
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-rhel8-operator@sha256:f128ce3188364bdf50142e1211e976dbb0bac67f541bad87a5577e81ef30e41b_amd64	—	Vendor Fix fix

Known not affected 4 products

Product	Identifier	Version	Remediation
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:644385b4abc586388b938baec6207d4406e0ff906aded74871644120143170a5_arm64		—
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:83f7ba7cdf1b25ac5b9c91cd3aa76c1d7136a3d34d826f19a4fe4813a9c062d1_ppc64le		—
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:bbf204c5370405e55ef38b687bcb207806043c5e87b6735cad76e0dd202213db_amd64		—
Unresolved product id: Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:c9fe952471a5033cb77237850bcbcbb7690e9b4bafaa9a10d5a3b40bc4a49791_s390x		—

Threats

Impact Important

References

11 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:3723	self
https://access.redhat.com/security/cve/CVE-2025-66506	external
https://access.redhat.com/security/updates/classi…	external
https://docs.redhat.com/en/documentation/red_hat_…	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2025-66506	self
https://bugzilla.redhat.com/show_bug.cgi?id=2419056	external
https://www.cve.org/CVERecord?id=CVE-2025-66506	external
https://nvd.nist.gov/vuln/detail/CVE-2025-66506	external
https://github.com/sigstore/fulcio/commit/765a0e5…	external
https://github.com/sigstore/fulcio/security/advis…	external

JSON

To clipboard

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          "text": "This vulnerability is rated Important for Red Hat as Fulcio, a certificate authority used for issuing code signing certificates, is susceptible to a denial of service when processing a specially crafted OpenID Connect (OIDC) token. This could lead to resource exhaustion and service unavailability in affected Red Hat products that utilize Fulcio.",
          "title": "Statement"
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        {
          "category": "general",
          "text": "The CVSS score(s) listed for this vulnerability do not reflect the associated product\u0027s status, and are included for informational purposes to better understand the severity of this vulnerability.",
          "title": "CVSS score applicability"
        }
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            "baseScore": 7.5,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "NONE",
            "integrityImpact": "NONE",
            "privilegesRequired": "NONE",
            "scope": "UNCHANGED",
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
            "version": "3.1"
          },
          "products": [
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            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:682728a8ecb86109fbcc407e7ac4114d7993ed9acc11bb49f7761197a4965ad9_s390x",
            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:74dd0d15fdcf95ac1eedea4dafc45598dda258fec28831acc95f2d2784804a04_ppc64le",
            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-proxy-rhel8@sha256:9d33602222295d4ecab52e990e0af7ae5f84e094721c2afaea1ddca904a91ae2_arm64",
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            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:644385b4abc586388b938baec6207d4406e0ff906aded74871644120143170a5_arm64",
            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:83f7ba7cdf1b25ac5b9c91cd3aa76c1d7136a3d34d826f19a4fe4813a9c062d1_ppc64le",
            "Red Hat OpenShift Pipelines 1.15:registry.redhat.io/openshift-pipelines/pipelines-operator-webhook-rhel8@sha256:bbf204c5370405e55ef38b687bcb207806043c5e87b6735cad76e0dd202213db_amd64",
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          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Important"
        }
      ],
      "title": "github.com/sigstore/fulcio: Fulcio: Denial of Service via crafted OpenID Connect (OIDC) token"
    }
  ]
}

CVE-2025-66506 (GCVE-0-2025-66506)

Vulnerability from cvelistv5 – Published: 2025-12-04 22:04 – Updated: 2025-12-05 15:32

Title

Fulcio allocates excessive memory during token parsing

Summary

Fulcio is a free-to-use certificate authority for issuing code signing certificates for an OpenID Connect (OIDC) identity. Prior to 1.8.3, function identity.extractIssuerURL splits (via a call to strings.Split) its argument (which is untrusted data) on periods. As a result, in the face of a malicious request with an (invalid) OIDC identity token in the payload containing many period characters, a call to extractIssuerURL incurs allocations to the tune of O(n) bytes (where n stands for the length of the function's argument), with a constant factor of about 16. This vulnerability is fixed in 1.8.3.

Severity

7.5 (High)


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

SSVC

Exploitation: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2025-12-05 15:32 UTC

CWE

CWE-405 - Asymmetric Resource Consumption (Amplification)

Assigner

GitHub_M mitre root

References

2 references

URL	Tags
https://github.com/sigstore/fulcio/security/advis…	x_refsource_CONFIRM
https://github.com/sigstore/fulcio/commit/765a0e5…	x_refsource_MISC

Impacted products

1 product

Vendor	Product	Version
sigstore	fulcio	Affected: < 1.8.3

Show details on NVD website

JSON

To clipboard

{
  "containers": {
    "adp": [
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2025-66506",
                "options": [
                  {
                    "Exploitation": "none"
                  },
                  {
                    "Automatable": "yes"
                  },
                  {
                    "Technical Impact": "partial"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2025-12-05T15:32:15.086814Z",
                "version": "2.0.3"
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    "cna": {
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          "product": "fulcio",
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            }
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        {
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        }
      ],
      "metrics": [
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          "cvssV3_1": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
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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.
Browse all ATT&CK techniques and the vulnerabilities related to each.

Related by attack behaviour

Vulnerabilities whose description is nearest to this one in the vector space of the CIRCL/vulnerability-attack-technique-biencoder model. This is a similarity search over the bi-encoder space (plain cosine), not a classification, and it has no measured accuracy.