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Red Hat Security Advisory

RHSA-2026:92480

Red Hat OpenShift Service Mesh 3.1.14

Released 2026-10-29 · Red Hat rating Important · View on Red Hat →

Fixed in

Fixes 12 records

Priority MEDIUM 50

On Windows, when the target of Root.Mkdir or Root.MkdirAll is a junction pointing to an empty location, the operation can create a directory at the junction target even when that target is located outside the root.

CVSS 3.1CRITICAL 9.8 Network No auth No interaction EPSS 0.00553 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-1386
Priority MEDIUM 49

The HTTP/2 server can refund connection-level flow control twice for the same data: Once when a client resets a stream (refunding data for any sent-but-unread portion of the stream), and again when a request handler read…

CVSS 3.1CRITICAL 9.1 Network No auth No interaction EPSS 0.00858 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 +1 CWE-675
Priority MEDIUM 40

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…

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00716 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-405
Priority MEDIUM 40

Parsing a multipart form can bypass memory limits and read an arbitrarily long line into memory when the remaining limit at the start of a part is less than 400 bytes.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00706 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-770
Priority MEDIUM 40

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.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00847 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 +1 CWE-405
Priority MEDIUM 40

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.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00663 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-770
Priority MEDIUM 40

When http.Transport sends an HTTP/1 CONNECT request with a non-empty Request.Body, it writes the body directly to the connection without framing after the request headers.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00604 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-444
Priority LOW 39

When an HTTP server handler sends a 2xx response to an HTTP/1 CONNECT request and returns without hijacking the connection, the server improperly continues to read and serve requests from the connection.

CVSS 3.1HIGH 7.5 Network No auth No interaction EPSS 0.00528 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-444
Priority LOW 27

A trusted template author may have previously written a valid template wherein the use of the 'yield' keyword would not be correctly escaped.

CVSS 3.1MEDIUM 6.1 Network No auth User interaction EPSS 0.00289 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-79
Priority LOW 27

When a JavaScript template literal contains consecutive expressions, the context tracking state was not properly reset upon entering a new expression.

CVSS 3.1MEDIUM 6.1 Network No auth User interaction EPSS 0.00289 Published 2026-10-08 Partial fix · 1.26.9, 1.27.2 CWE-79