Vulnerability-Lookup

RHSA-2026:65537

Vulnerability from csaf_redhat - Published: 2026-09-08 16:15 - Updated: 2026-09-10 09:46

Summary

Red Hat Security Advisory: Red Hat Hardened Images RPMs Security Update

Severity

Important

Notes

Topic: An update for Red Hat Hardened Images RPMs is now available.

Details: This update includes the following RPMs: grafana13.2: * grafana13.2-13.2.1-0.2.hum1 (aarch64, x86_64) * grafana13.2-13.2.1-0.2.hum1.src (src) Security Fix(es): grafana13.2: * CVE-2026-84394 * CVE-2026-84292

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-2026-84292

A flaw was found in fast-uri. This component improperly serializes the port component of a Uniform Resource Identifier (URI) without validating its content. A remote attacker can exploit this by crafting a malicious port value that injects authority delimiters. This manipulation can demote the intended host to user information and redirect the authority to an attacker-controlled host, leading to information disclosure as applications interpret the attacker's host as legitimate.

7.5 (High)


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

CWE-140 - Improper Neutralization of Delimiters

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@x86_64	—	Vendor Fix fix

Threats

Impact Important

CVE-2026-84394

A flaw was found in fast-uri. The library incorrectly processes Uniform Resource Identifier (URI) hosts containing unbalanced brackets, leading to a discrepancy in how the host is parsed by fast-uri compared to other HTTP clients. This host confusion can allow an attacker to bypass security policies, such as Server-Side Request Forgery (SSRF) denylists or redirect allowlists, by causing an application to evaluate its policy against an incorrect host string. This could result in unintended network requests or access to unauthorized resources.

7.5 (High)


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

CWE-1289 - Improper Validation of Unsafe Equivalence in Input

Affected products

Fixed 3 products

Product	Version	Remediation
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@aarch64	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@src	—	Vendor Fix fix
Unresolved product id: Red Hat Hardened Images:grafana13-2-main@x86_64	—	Vendor Fix fix

Threats

Impact Important

References

18 references

URL	Category
https://access.redhat.com/errata/RHSA-2026:65537	self
https://access.redhat.com/security/cve/CVE-2026-84292	external
https://access.redhat.com/security/cve/CVE-2026-84394	external
https://access.redhat.com/security/updates/classi…	external
https://images.redhat.com/	external
https://access.redhat.com/security/cve/CVE-2026-17183	external
https://security.access.redhat.com/data/csaf/v2/a…	self
https://access.redhat.com/security/cve/CVE-2026-84292	self
https://bugzilla.redhat.com/show_bug.cgi?id=2527747	external
https://www.cve.org/CVERecord?id=CVE-2026-84292	external
https://nvd.nist.gov/vuln/detail/CVE-2026-84292	external
https://cna.openjsf.org/security-advisories.html	external
https://github.com/fastify/fast-uri/security/advi…	external
https://access.redhat.com/security/cve/CVE-2026-84394	self
https://bugzilla.redhat.com/show_bug.cgi?id=2527756	external
https://www.cve.org/CVERecord?id=CVE-2026-84394	external
https://nvd.nist.gov/vuln/detail/CVE-2026-84394	external
https://github.com/fastify/fast-uri/security/advi…	external

JSON

To clipboard

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          "title": "Vulnerability description"
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          "text": "fast-uri: fast-uri: Authority Injection via Unvalidated Port Serialization",
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          "category": "description",
          "text": "A flaw was found in fast-uri. The library incorrectly processes Uniform Resource Identifier (URI) hosts containing unbalanced brackets, leading to a discrepancy in how the host is parsed by fast-uri compared to other HTTP clients. This host confusion can allow an attacker to bypass security policies, such as Server-Side Request Forgery (SSRF) denylists or redirect allowlists, by causing an application to evaluate its policy against an incorrect host string. This could result in unintended network requests or access to unauthorized resources.",
          "title": "Vulnerability description"
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          "text": "fast-uri: fast-uri: Host confusion via unbalanced URI brackets can bypass security policies",
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          "category": "other",
          "text": "This issue is rated Moderate because successful exploitation requires a specific configuration where fast-uri handles security checks but a different client resolves the URL, enabling security policy bypasses without direct code execution. This affects fast-uri versions 2.4.5, 3.1.6, and 4.1.3 (fixed in 2.4.6, 3.1.7, and 4.1.4).",
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            "confidentialityImpact": "NONE",
            "integrityImpact": "HIGH",
            "privilegesRequired": "NONE",
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            "userInteraction": "NONE",
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            "version": "3.1"
          },
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}

CVE-2026-84292 (GCVE-0-2026-84292)

Vulnerability from cvelistv5 – Published: 2026-09-02 20:09 – Updated: 2026-09-03 13:16

Title

fast-uri vulnerable to authority injection via an unvalidated port in serialize

Summary

fast-uri serializes the port component of a URI without validating it. When recomposing the authority, the userinfo and host components are escaped but the port is concatenated verbatim, so a port value that is not a sequence of digits can inject authority delimiters, demoting the intended host to userinfo and pointing the authority at an attacker-controlled host. Both fast-uri and Node's URL read the result back as the attacker's host with no error, so re-validating the built URI does not catch it. This affects applications that build URIs from parts and assign untrusted data to the port component through the serialize, normalize, or equal functions in their object forms. The issue affects fast-uri versions before 2.4.6, from 3.0.0 before 3.1.7, and from 4.0.0 before 4.1.4. It is fixed in 2.4.6, 3.1.7, and 4.1.4, where recomposeAuthority rejects any port that is not a digit sequence per RFC 3986.

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: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 13:16 UTC

CWE

CWE-116 - Improper Encoding or Escaping of Output

Assigner

openjs redhat root

References

2 references

URL	Tags
https://github.com/fastify/fast-uri/security/advi…
https://cna.openjsf.org/security-advisories.html

Impacted products

1 product

Vendor	Product	Version
fast-uri	fast-uri	Affected: 0 , < 2.4.6 (semver) Unaffected: 2.4.6 (semver) Affected: 3.0.0 , < 3.1.7 (semver) Unaffected: 3.1.7 (semver) Affected: 4.0.0 , < 4.1.4 (semver) Unaffected: 4.1.4 (semver)

Credits

YashvantHange mcollina UlisesGascon

Show details on NVD website

JSON

To clipboard

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CVE-2026-84394 (GCVE-0-2026-84394)

Vulnerability from cvelistv5 – Published: 2026-09-02 20:25 – Updated: 2026-09-03 13:14

Title

fast-uri vulnerable to host confusion via an unclosed bracket in the URI authority

Summary

fast-uri accepts a host that contains an unbalanced or misplaced authority bracket without reporting an error. A host that starts with an opening bracket but does not end with a closing bracket is neither validated as an IP literal nor canonicalized as a domain name, so parse() returns it as the host with error undefined, while Node's URL and the HTTP clients built on it resolve the same string to a different host. An application that reads the parsed host to make a host decision, such as an SSRF denylist, a redirect allowlist, or proxy routing, and then passes the original URL to an HTTP client evaluates its policy against a string that is not the host the request reaches. The same host is carried through normalize, equal, and resolve. This affects fast-uri versions 2.4.5, 3.1.6, and 4.1.3, and is fixed in 2.4.6, 3.1.7, and 4.1.4, where parse() reports a malformed host for any host that contains a bracket but is not a valid IPv6 literal.

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: none Automatable: yes Technical Impact: partial

CISA Coordinator · CISA-ADP (v2.0.3)

Decision recorded 2026-09-03 13:14 UTC

CWE

CWE-436 - Interpretation Conflict

Assigner

openjs redhat root

References

2 references

URL	Tags
https://github.com/fastify/fast-uri/security/advi…
https://cna.openjsf.org/security-advisories.html

Impacted products

1 product

Vendor	Product	Version
fast-uri	fast-uri	Affected: 2.4.5 , < 2.4.6 (semver) Unaffected: 2.4.6 (semver) Affected: 3.1.6 , < 3.1.7 (semver) Unaffected: 3.1.7 (semver) Affected: 4.1.3 , < 4.1.4 (semver) Unaffected: 4.1.4 (semver)

Credits

YashvantHange mcollina UlisesGascon

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

RHSA-2026:65537

CVE-2026-84292 (GCVE-0-2026-84292)

CVE-2026-84394 (GCVE-0-2026-84394)

Tags

Sightings

Nomenclature