Summary
Grafana is an open source, feature rich metrics dashboard and graph editor for Graphite, InfluxDB & OpenTSDB.
Security Fix(es):
* grafana: Grafana: Information disclosure vulnerability in Unified Alerting (CVE-2026-17183)
* net/[http:](http:) golang: golang: Denial of Service via crafted HTTP Range headers (CVE-2026-78667)
* crypto/tls: golang: crypto/tls: Denial of Service via multiple ECH outer extension references (CVE-2026-97031)
* net/[http:](http:) net/http/internal/http2: golang.org/x/net/http2: net/[http:](http:) Denial of Service via excessive HTTP/2 SETTINGS frames (CVE-2026-78669)
* crypto/x509: golang: crypto/x509: Man-in-the-middle attacks via untrusted intermediate certificates (CVE-2026-111943)
For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and other related information, refer to the CVE page(s) listed in the References section.
Fixed packages 2
| Release | Package | Fixed in |
|---|---|---|
| AlmaLinux · 9 | grafana | 10.2.6-23.el9_8.7 |
| AlmaLinux · 9 | grafana-selinux | 10.2.6-23.el9_8.7 |
Vulnerabilities 5
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High 7.5
Lack of limit on size of parsed Range headers in net/http
When parsing a Range header containing a large number of small ranges, FileServer(FS), ServeContent, and ServeFile(FS) can consume an excessive amount of CPU.
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High 7.5
Excessive CPU consumption from repeated initial window changes in net/http
A malicious HTTP/2 peer can cause excessive CPU consumption in the client or server by opening a large number of streams and then sending many small SETTINGS frames containing SETTINGS_INITIAL_WINDOW_SIZE values.
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High 7.5
Reject malformed ECH outer extension references in crypto/tls
Multiple ECH outer extension references are not permitted under RFC 9849; previously, a client could send a well-crafted packet that could trigger memory exhaustion in the server process by specifying multiple references. We now reject these as malformed and …
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High 7.1
CVE-2026-17183 CVE Record
An authenticated user with permission to create or edit alert rules can bypass datasource query authorization by marking an alert rule query as a server-side expression while referencing a real datasource UID (incorrect authorization). This can expose data ac…
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Medium 6.8CVE-2026-111943 Public exploit
Distrust compromised intermediate certificates in crypto/x509
On most platforms, Go uses the given system root certificates. However, in some narrower cases, the system trust stores may not be updated without further action. To defend against the narrower set of cases that may remain affected, a denylist was added in cr…
References
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report
https://access.redhat.com/security/cve/CVE-2026-111943
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report
https://access.redhat.com/security/cve/CVE-2026-17183
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report
https://access.redhat.com/security/cve/CVE-2026-78667
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report
https://access.redhat.com/security/cve/CVE-2026-78669
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report
https://access.redhat.com/security/cve/CVE-2026-97031
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report
https://bugzilla.redhat.com/2519801
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report
https://bugzilla.redhat.com/2548334
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report
https://bugzilla.redhat.com/2548336
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report
https://bugzilla.redhat.com/2548344
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report
https://bugzilla.redhat.com/2556068
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advisory
https://errata.almalinux.org/9/ALSA-2026-89744.html