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Red Hat Security Advisory

RHSA-2026:95591

Cluster Observability Operator - 1.5

Released 2026-11-05 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 34 records

Priority MEDIUM 56

DOMPurify before 3.4.13 contains a cross-site scripting vulnerability in IN_PLACE sanitization where element-removal hooks fail to neutralize detached subtrees.

CVSS 4.0MEDIUM 5.1 Network Low privileges User interaction EPSS 0.00394 Published 2026-08-18 Partial fix · 3.4.13 CWE-79
Priority MEDIUM 46

When writing data larger than 4GB in a single Write call on an SSH channel, an integer overflow in the internal payload size calculation caused the write loop to spin indefinitely, sending empty packets without making pr…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00597 Published 2026-05-22 Partial fix · 0.52.0 CWE-190
TI-2026-80931 CVE-2026-116591 · GHSA-fpmh-frq8-7rj8

compress zstd: Panic on two-block frames

Priority MEDIUM 44

compress provides various compression algorithms.

CVSS 4.0HIGH 8.7 Network No auth No interaction EPSS 0.00333 Published 2026-10-26 Partial fix · 1.20.2 CWE-190
Priority MEDIUM 40

Previously, DecodeElement would reset the depth counter causing it to never fire; this could lead to stack exhaustion.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00568 Published 2026-08-13 Partial fix · 1.25.13, 1.26.6 +1 CWE-770
Priority MEDIUM 40

When a server is configured to support unencrypted HTTP/2, it reads a few bytes from each new connection to see if they contain the HTTP/2 client preface.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00568 Published 2026-08-13 Partial fix · 1.25.13, 1.26.6 +1 CWE-770
Priority MEDIUM 40

Decoding a maliciously-crafted MIME header containing many invalid encoded-words can consume excessive CPU.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.0056 Published 2026-06-02 Partial fix · 1.25.11, 1.26.4 CWE-407
Priority MEDIUM 40

Enforce a recursion limit in Unmarshal to prevent stack exhaustion when parsing deeply-nested, recursive structures.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00568 Published 2026-08-13 Partial fix · 1.25.13, 1.26.6 +1 CWE-400
Priority LOW 36

On Unix systems, opening a file in an os.Root improperly follows symlinks to locations outside of the Root when the final path component of the a path is a symbolic link and the path ends in /.

CVSS 3.1HIGH 7.8 Local Low privileges No interaction EPSS 0.00232 Published 2026-07-08 Partial fix · 1.25.12, 1.26.5 +1 CWE-61
Priority LOW 30

(*x509.Certificate).VerifyHostname previously called matchHostnames in a loop over all DNS Subject Alternative Name (SAN) entries.

CVSS 3.1MEDIUM 6.5 Network No auth No interaction EPSS 0.00591 Published 2026-06-02 Partial fix · 1.25.11, 1.26.4
Priority LOW 27

Previously, resolving relative paths containing parent directory ('..') segments performed string conversions and buffer rewrites on each step, resulting in quadratic time complexity and high memory allocation overhead.

CVSS 3.1MEDIUM 5.9 Network No auth No interaction EPSS 0.0055 Published 2026-08-13 Partial fix · 1.25.13, 1.26.6 +1 CWE-407
Priority LOW 27

Previously, pathological inputs could close an unescaped '/' early, allowing for attack-controlled data to inject arbitrary content, potentially leading to XSS.

CVSS 3.1MEDIUM 6.1 Network No auth User interaction EPSS 0.0031 Published 2026-08-13 Partial fix · 1.25.13, 1.26.6 +1 CWE-79