RHSA-2026:20351
Vulnerability from csaf_redhat - Published: 2026-05-23 05:23 - Updated: 2026-05-25 14:27Summary
Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update
Severity
Moderate
Notes
Topic: An update for Red Hat Hardened Images RPMs is now available.
Details: This update includes the following RPMs:
nginx:
* nginx-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-all-modules-1.30.2-1.hum1 (noarch)
* nginx-core-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-filesystem-1.30.2-1.hum1 (noarch)
* nginx-mod-devel-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-http-geoip-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-http-image-filter-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-http-perl-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-http-xslt-filter-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-mail-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-stream-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-mod-stream-geoip-1.30.2-1.hum1 (aarch64, x86_64)
* nginx-1.30.2-1.hum1.src (src)
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.
A flaw was found in NGINX Plus and NGINX Open Source when configured to use the HTTP/3 QUIC module. A remote attacker could exploit this by spoofing their source IP address. This vulnerability allows for the bypass of authorization controls or rate limiting mechanisms, potentially leading to unauthorized access or resource abuse.
6.5 (Medium)
Affected products
Fixed
4 products
| Product | Identifier | Version | Remediation |
|---|---|---|---|
| Unresolved product id: Red Hat Hardened Images:nginx-main@aarch64 | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:nginx-main@noarch | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:nginx-main@src | — |
Vendor Fix
fix
Workaround
|
|
| Unresolved product id: Red Hat Hardened Images:nginx-main@x86_64 | — |
Vendor Fix
fix
Workaround
|
Threats
Impact
Moderate
References
11 references
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"name": "Authentication Bypass by Spoofing"
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"discovery_date": "2026-05-13T16:04:19.875658+00:00",
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"title": "Vulnerability description"
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"text": "nginx: NGINX: Authorization bypass via IP spoofing in HTTP/3 QUIC module",
"title": "Vulnerability summary"
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"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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"Red Hat Hardened Images:nginx-main@noarch",
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"details": "To mitigate this issue, if the HTTP/3 QUIC module is not required, disable it in your NGINX configuration. This typically involves removing or commenting out the `quic` parameter from `listen` directives in your `nginx.conf` file. After modifying the configuration, a graceful reload or restart of the NGINX service is required for the changes to take effect. For example, use `sudo systemctl reload nginx` or `sudo systemctl restart nginx`.",
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"scores": [
{
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"attackComplexity": "LOW",
"attackVector": "NETWORK",
"availabilityImpact": "LOW",
"baseScore": 6.5,
"baseSeverity": "MEDIUM",
"confidentialityImpact": "LOW",
"integrityImpact": "NONE",
"privilegesRequired": "NONE",
"scope": "UNCHANGED",
"userInteraction": "NONE",
"vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:L",
"version": "3.1"
},
"products": [
"Red Hat Hardened Images:nginx-main@aarch64",
"Red Hat Hardened Images:nginx-main@noarch",
"Red Hat Hardened Images:nginx-main@src",
"Red Hat Hardened Images:nginx-main@x86_64"
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}
],
"threats": [
{
"category": "impact",
"details": "Moderate"
}
],
"title": "nginx: NGINX: Authorization bypass via IP spoofing in HTTP/3 QUIC module"
}
]
}
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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.
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