Red Hat Security Advisory: Red Hat build of Cryostat security update
An update is now available for the Red Hat build of Cryostat 4 on RHEL 9. Security Fix(es): * netty-handler: Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416) * netty-resolver-dns: Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674) * netty-handler: Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010) * io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691) * netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers (CVE-2026-48059) * netty-codec-http2: Denial of Service due to resource leak (CVE-2026-48043) * netty-codec-haproxy: Denial of Service via malformed HAProxy message (CVE-2026-44893) * netty-handler: IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249) * io.quarkus/quarkus-vertx-http: Authorization bypass in HTTP path-based policies via encoded characters (CVE-2026-50559) * jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512) * jackson-databind: Security bypass allows arbitrary code execution (CVE-2026-54513) * eclipse-vertx/vert.x: Denial of Service via TLS handshake with wildcard server name (CVE-2026-6860) * golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation (CVE-2026-46595) * golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters (CVE-2026-39829) * golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions (CVE-2026-39828) * golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835) * golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses (CVE-2026-39830) * golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass (CVE-2026-27136) * golang.org/x/net/html: Cross-Site Scripting allowing arbitrary code execution (CVE-2026-25681) * golang.org/x/image/tiff: Denial of Service via crafted PackBits-compressed data (CVE-2026-46599) * github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: Integer Overflow in Avro Decoder (CVE-2026-46384) * github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: CPU Exhaustion in Avro Decoder via Unbounded Block-Count Iteration (CVE-2026-46385) * net: golang: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) * mime: golang: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * form-data: Form field override via CRLF injection (CVE-2026-12143) * ws: Denial of Service via memory exhaustion from small WebSocket fragments (CVE-2026-48779) * ws: Uninitialized memory disclosure via websocket.close() with TypedArray (CVE-2026-45736) * undici: Denial of Service due to unbounded memory growth via WebSocket frames (CVE-2026-12151) * undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy (CVE-2026-9697) * undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing (CVE-2026-6734) * js-cookie: Cookie attribute manipulation via prototype pollution (CVE-2026-46625) * brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149) * protobufjs: Denial of Service via crafted schema (CVE-2026-44290) * protobufjs: Data integrity impact due to prototype pollution (CVE-2026-44292) * protobufjs: Denial of Service via crafted JSON descriptors (CVE-2026-45740) * protobufjs: Arbitrary Code Execution via prototype pollution (CVE-2026-44291) 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.
AI Analysis
Technical Summary
CVE-2026-6734 is a CRLF injection vulnerability in the form-data library used by Red Hat OpenShift Dev Spaces and Red Hat Developer Hub. It allows remote attackers to inject control characters (CR, LF, ") into the field argument of FormData#append or the filename option, which can inject additional headers or multipart parts into HTTP requests. This can override sensitive form fields and compromise data integrity. The vulnerability is rated as high severity by Red Hat. The impact is mitigated in default deployments that use fixed field names rather than untrusted user input. The vendor advisory does not explicitly confirm a patch but recommends strict input validation and sanitization to prevent exploitation.
Potential Impact
The vulnerability allows an attacker to manipulate multipart form-data requests by injecting headers or additional multipart parts, potentially overriding sensitive form fields and compromising data integrity. However, in default deployments of Red Hat OpenShift Dev Spaces and Red Hat Developer Hub, the attack vector is limited because fixed field names are used, preventing exploitation. The practical impact is mainly on non-default or custom integrations that forward multipart requests with attacker-controlled field names or filenames.
Mitigation Recommendations
Red Hat advises implementing strict input validation and sanitization on all multipart form-data field names and filenames derived from untrusted sources to prevent injection of control characters (CR, LF, "). Deployments using fixed or trusted field names are not impacted. Patch status is not explicitly confirmed; users should monitor Red Hat advisories for updates. No immediate action is required if fixed field names are exclusively used.
Red Hat Security Advisory: Red Hat build of Cryostat security update
Description
An update is now available for the Red Hat build of Cryostat 4 on RHEL 9. Security Fix(es): * netty-handler: Denial of Service due to eager buffer allocation in TLS handshake (CVE-2026-45416) * netty-resolver-dns: Information disclosure and data manipulation due to improper CNAME record validation (CVE-2026-45674) * netty-handler: Improper trust manager handling leads to hostname verification bypass (CVE-2026-50010) * io.netty/netty-resolver-dns: Netty has Insufficient Bailiwick Validation for NS Records (CVE-2026-47691) * netty-codec-haproxy: Netty HAProxy PROXY protocol v2 codec: Denial of Service via memory leak from crafted PROXY protocol headers (CVE-2026-48059) * netty-codec-http2: Denial of Service due to resource leak (CVE-2026-48043) * netty-codec-haproxy: Denial of Service via malformed HAProxy message (CVE-2026-44893) * netty-handler: IPv6 subnet rule bypass due to incorrect masking operation (CVE-2026-44249) * io.quarkus/quarkus-vertx-http: Authorization bypass in HTTP path-based policies via encoded characters (CVE-2026-50559) * jackson-databind: Arbitrary code execution via PolymorphicTypeValidator bypass (CVE-2026-54512) * jackson-databind: Security bypass allows arbitrary code execution (CVE-2026-54513) * eclipse-vertx/vert.x: Denial of Service via TLS handshake with wildcard server name (CVE-2026-6860) * golang.org/x/crypto/ssh: Authorization bypass due to skipped source-address validation (CVE-2026-46595) * golang.org/x/crypto/ssh: Denial of Service via crafted public key with excessive parameters (CVE-2026-39829) * golang.org/x/crypto/ssh: Unauthorized command execution via discarded SSH permissions (CVE-2026-39828) * golang.org/x/crypto/ssh: Denial of Service via crafted SSH certificate (CVE-2026-39835) * golang.org/x/crypto/ssh: Denial of Service via resource leak from unsolicited SSH responses (CVE-2026-39830) * golang.org/x/net/html: Cross-Site Scripting via HTML parsing bypass (CVE-2026-27136) * golang.org/x/net/html: Cross-Site Scripting allowing arbitrary code execution (CVE-2026-25681) * golang.org/x/image/tiff: Denial of Service via crafted PackBits-compressed data (CVE-2026-46599) * github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: Integer Overflow in Avro Decoder (CVE-2026-46384) * github.com/hamba/avro/v2: github.com/linkedin/goavro/v2: CPU Exhaustion in Avro Decoder via Unbounded Block-Count Iteration (CVE-2026-46385) * net: golang: Denial of Service via long CNAME response in LookupCNAME (CVE-2026-33811) * mime: golang: Denial of Service via maliciously-crafted MIME header (CVE-2026-42504) * form-data: Form field override via CRLF injection (CVE-2026-12143) * ws: Denial of Service via memory exhaustion from small WebSocket fragments (CVE-2026-48779) * ws: Uninitialized memory disclosure via websocket.close() with TypedArray (CVE-2026-45736) * undici: Denial of Service due to unbounded memory growth via WebSocket frames (CVE-2026-12151) * undici: Man-in-the-Middle attack via ignored TLS options with SOCKS5 proxy (CVE-2026-9697) * undici: Information disclosure and data integrity issues due to incorrect Socks5ProxyAgent connection routing (CVE-2026-6734) * js-cookie: Cookie attribute manipulation via prototype pollution (CVE-2026-46625) * brace-expansion: Denial of Service due to exponential-time complexity (CVE-2026-13149) * protobufjs: Denial of Service via crafted schema (CVE-2026-44290) * protobufjs: Data integrity impact due to prototype pollution (CVE-2026-44292) * protobufjs: Denial of Service via crafted JSON descriptors (CVE-2026-45740) * protobufjs: Arbitrary Code Execution via prototype pollution (CVE-2026-44291) 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.
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-6734 is a CRLF injection vulnerability in the form-data library used by Red Hat OpenShift Dev Spaces and Red Hat Developer Hub. It allows remote attackers to inject control characters (CR, LF, ") into the field argument of FormData#append or the filename option, which can inject additional headers or multipart parts into HTTP requests. This can override sensitive form fields and compromise data integrity. The vulnerability is rated as high severity by Red Hat. The impact is mitigated in default deployments that use fixed field names rather than untrusted user input. The vendor advisory does not explicitly confirm a patch but recommends strict input validation and sanitization to prevent exploitation.
Potential Impact
The vulnerability allows an attacker to manipulate multipart form-data requests by injecting headers or additional multipart parts, potentially overriding sensitive form fields and compromising data integrity. However, in default deployments of Red Hat OpenShift Dev Spaces and Red Hat Developer Hub, the attack vector is limited because fixed field names are used, preventing exploitation. The practical impact is mainly on non-default or custom integrations that forward multipart requests with attacker-controlled field names or filenames.
Mitigation Recommendations
Red Hat advises implementing strict input validation and sanitization on all multipart form-data field names and filenames derived from untrusted sources to prevent injection of control characters (CR, LF, "). Deployments using fixed or trusted field names are not impacted. Patch status is not explicitly confirmed; users should monitor Red Hat advisories for updates. No immediate action is required if fixed field names are exclusively used.
Technical Details
- Gcve Source
- db.gcve.eu
- Csaf Category
- csaf_security_advisory
- Csaf Version
- 2.0
- Publisher
- Red Hat Product Security
- Advisory Id
- RHSA-2026:22380
- Cve Count
- 4
- Additional Cves
- ["CVE-2026-9678","CVE-2026-9697","CVE-2026-45149"]
Threat ID: 6a340ceff198dc38c106069e
Added to database: 06/18/2026, 15:21:19 UTC
Last enriched: 08/14/2026, 19:23:57 UTC
Last updated: 09/18/2026, 01:00:51 UTC
Views: 177
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