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High RHSA-2026:66008 12 CVEs

Red Hat Security Advisory: Red Hat Hardened Images RPMs bug fix and enhancement update

Published Sep 10, 2026 · Updated Nov 13, 2026

Ecosystem: Red Hat

Fixed packages 1

ReleasePackageFixed in
Red Hat · Hardened Images 1 hummingbird:1 grafana12.4 0:12.4.10-0.2.hum1

Vulnerabilities 12

  • High 7.5
    CVE-2026-19534

    undici vulnerable to Denial of Service via unrequested WebSocket subprotocol

    undici's WebSocket client crashes the whole Node.js process during the opening handshake when a server responds with a subprotocol that the client never requested. A default WebSocket connection sends no subprotocol, but if the server's 101 response includes …

    undici undici renovate prism Debian Ubuntu Wolfi npm
  • High 7.4
    CVE-2026-84961

    undici vulnerable to TLS certificate validation bypass via dropped connect options in BalancedPool

    undici's BalancedPool constructor passes its entire options object through an internal deep-clone that serializes and reparses the value as JSON. Because JSON cannot represent functions, any function-valued TLS option, such as a caller-supplied checkServerIde…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • High 7.1
    CVE-2026-14199

    Session takeover via Auth Proxy cache key collision

    Only self-managed Grafana instances with Auth Proxy authentication and identity caching enabled (sync_ttl greater than zero) are affected. The Auth Proxy cache key concatenated the username and forwarded identity attributes without a delimiter, so distinct id…

    Grafana Grafana OSS Grafana Enterprise grafana-12.3 Web / CMS Alpine Wolfi
  • Medium 6.5
    CVE-2026-84933

    undici vulnerable to cross-user cookie disclosure via Set-Cookie caching in shared caches

    undici's cache interceptor does not handle the Set-Cookie response header anywhere in its cache path, so it neither refuses to store nor strips that header. In shared cache mode, which is the default, an otherwise cacheable response that carries a Set-Cookie …

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • Medium 6.3
    CVE-2026-19197

    Broken access control in dashboard snapshots

    A user with organization administrator permissions can delete dashboard snapshots belonging to other organizations on the same Grafana instance, and can recover a snapshot's secret delete key using only its public share key (broken access control).

    Grafana Grafana OSS Grafana Enterprise grafana Web / CMS Ubuntu
  • Medium 5.9
    CVE-2026-18149

    undici vulnerable to Denial of Service via orphaned RetryHandler response body

    undici's retry handler can leave an already-exposed response body pending forever. When a server returns a successful response that declares a Content-Length, sends only part of the body, and closes the connection, the retry handler retries the request. If th…

    undici undici prism nodejs Debian Ubuntu Azure Linux Wolfi npm
  • Medium 5.9
    CVE-2026-84890

    undici vulnerable to Denial of Service via unbounded decompression of compressed responses

    undici's decompress interceptor decompresses response bodies according to the untrusted Content-Encoding header. While the number of content-encoding layers is capped, the total decompressed output size is unbounded and there is no configuration option to lim…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • Medium 5.9
    CVE-2026-85014

    undici vulnerable to Denial of Service via WebSocketStream unclean close

    undici's experimental WebSocketStream client crashes the whole Node.js process when a remote peer closes the TCP connection without a WebSocket close handshake. On an unclean close the internal socket-close handler calls abort on the writable stream unconditi…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • Low 3.7
    CVE-2026-18540

    undici vulnerable to downstream response splitting via retry interceptor

    undici's retry interceptor can append the body of a ranged retry response to bytes already delivered from an earlier partial response while still presenting the original response's status and headers. This happens when an upstream server delivers part of a bo…

    undici undici renovate prism Debian Ubuntu Azure Linux Wolfi npm
  • Low 3.7
    CVE-2026-84947

    undici vulnerable to response truncation via oversized chunked responses in the dump interceptor

    undici's dump interceptor reads and discards a response body up to a configurable maximum size. When a response declares a Content-Length that exceeds the maximum, the interceptor aborts cleanly, but when a response has no Content-Length and is chunked, the i…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • Low 3.7
    CVE-2026-85008

    undici vulnerable to caching and replay of unsafe HTTP method responses

    undici's cache interceptor documents that only safe HTTP methods are cached, but its logic to skip caching is built by subtracting the configured methods from the set of safe methods, so an unsafe method such as POST, PUT, or DELETE is never placed in the ski…

    undici undici prism lerna Debian Ubuntu Wolfi npm
  • Low 3.1
    CVE-2026-28378

    Cross-Organization Public Dashboard Deletion via Missing Org Isolation

    The public dashboard deletion endpoint does not enforce organization isolation, allowing an Org Admin in one organization to delete public dashboards belonging to a different organization by supplying the target dashboard's identifiers.

    Grafana Grafana OSS Grafana Enterprise Web / CMS

References

  • article
    https://images.redhat.com/
  • report
    https://access.redhat.com/security/cve/CVE-2026-84961
  • article
    https://access.redhat.com/security/updates/classification/
  • report
    https://access.redhat.com/security/cve/CVE-2026-19534
  • report
    https://access.redhat.com/security/cve/CVE-2026-18540
  • report
    https://access.redhat.com/security/cve/CVE-2026-84933
  • report
    https://access.redhat.com/security/cve/CVE-2026-18149
  • report
    https://access.redhat.com/security/cve/CVE-2026-84947
  • report
    https://access.redhat.com/security/cve/CVE-2026-85008
  • report
    https://access.redhat.com/security/cve/CVE-2026-84890
  • report
    https://access.redhat.com/security/cve/CVE-2026-85014
  • report
    https://access.redhat.com/security/cve/CVE-2026-14199
  • report
    https://access.redhat.com/security/cve/CVE-2026-28378
  • report
    https://access.redhat.com/security/cve/CVE-2026-19197
  • advisory
    https://security.access.redhat.com/data/csaf/v2/advisories/2026/rhsa-2026_66008.json
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2521850
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-14199
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-14199
  • article
    https://grafana.com/security/security-advisories/cve-2026-14199/
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2528802
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-18149
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-18149
  • article
    https://cna.openjsf.org/security-advisories.html
  • article
    https://github.com/nodejs/undici/security/advisories/GHSA-pmjh-fq2x-6v4x
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2528783
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-18540
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-18540
  • article
    https://github.com/nodejs/undici/security/advisories/GHSA-r53p-7pc4-xj5r
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2524303
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-19197
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-19197
  • article
    https://grafana.com/security/security-advisories/cve-2026-19197
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2528759
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-19534
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-19534
  • article
    https://github.com/nodejs/undici/security/advisories/GHSA-rfgv-xxqx-mfg5
  • report
    https://bugzilla.redhat.com/show_bug.cgi?id=2497887
  • advisory
    https://www.cve.org/CVERecord?id=CVE-2026-28378
  • advisory
    https://nvd.nist.gov/vuln/detail/CVE-2026-28378