Red Hat Security Advisory: nodejs24 security, bug fix, and enhancement update

Fixed packages 9

Vulnerabilities 18

• High 7.7
  CVE-2026-48618

  A flaw in Node.js TLS hostname handling can cause Node.js unicode dot separator handling can lead to tls wildcard-depth…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• High 7.5
  CVE-2026-12151

  undici WebSocket client vulnerable to denial of service via fragment count bypass

  Impact: The undici WebSocket client enforces maxPayloadSize on the cumulative byte count of fragments in a message but does not enforce a limit on the number of fragments. A malicious WebSocket server can stream many small or empty continuation frames that ea…

  undici undici renovate prism Debian Ubuntu Azure Linux Wolfi npm
  Jun 17, 2026
• High 7.5
  CVE-2026-48933

  A flaw in Node.js WebCrypto implementation can crash the process if the input of `subtle.encrypt()` is a multiple of 2G…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• High 7.5
  CVE-2026-6734

  undici vulnerable to cross-origin request routing via SOCKS5 proxy pool reuse

  Impact: When using Socks5ProxyAgent, undici reuses a single connection pool across different origins without verifying that the pool's origin matches the requested origin. All requests are dispatched through the pool connected to the first origin, regardless …

  undici undici renovate code-server Debian Ubuntu Wolfi npm
  Jun 17, 2026
• High 7.4
  CVE-2026-9697

  undici vulnerable to TLS certificate validation bypass via dropped requestTls in SOCKS5 ProxyAgent

  Impact: undici's ProxyAgent silently drops the requestTls option when configured with a SOCKS5 proxy URI (socks5:// or socks://). The target HTTPS connection through the SOCKS5 tunnel falls back to Node's default trust store, ignoring user-configured ca, cert…

  undici undici langfuse-3-worker renovate Debian Ubuntu Azure Linux Wolfi npm
  Jun 17, 2026
• Medium 5.9
  CVE-2026-48615

  A flaw in Node.js proxy tunnel error handling could expose proxy credentials in `ERR_PROXY_TUNNEL` error messages. When…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Medium 5.9
  CVE-2026-9678

  undici vulnerable to cross-user information disclosure via shared cache whitespace bypass

  Impact: Undici's cache interceptor incorrectly classifies some responses as cacheable when the upstream Cache-Control header uses whitespace-padded qualified private or no-cache field names such as private=" authorization" or no-cache="\tauthorization". The p…

  undici undici langfuse-3-worker renovate Debian Ubuntu Wolfi npm
  Jun 17, 2026
• Medium 5.6
  CVE-2026-48930

  A flaw in Node.js TLS hostname handling can cause Embedded-nul hostnames can lead to silent authority rebinding due to …

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Medium 5.3
  CVE-2026-42338

  ip-address: XSS in Address6 HTML-emitting methods

  ip-address is a library for parsing and manipulating IPv4 and IPv6 addresses in JavaScript. Prior to 10.1.1, Address6.group() and Address6.link() do not HTML-escape attacker-controlled content before embedding it in the HTML strings they return, and AddressEr…

  beaugunderson ip-address langfuse-3-worker katib-suggestion-hyperopt Debian Ubuntu Wolfi npm
  May 12, 2026
• Medium 5.3
  CVE-2026-48619

  A flaw in Node.js HTTP/2 client allows a server to send an unlimited number of ORIGIN frames, which could lead to an Ou…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Medium 5.3
  CVE-2026-48937

  A flaw in Node.js HTTP/2 server API can cause servers to keep accepting data even after sending a `GOAWAY` frame. This …

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  Jun 18, 2026
• Medium 4.3
  CVE-2026-48934

  A flaw in Node.js TLS host verification can cause an attacker to bypass certification validation. This vulnerability af…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Medium 4.2
  CVE-2026-48928

  A inconsistency in Node.js hostname matching can cause a trust-policy bypass in multi-context mTLS setups. This vulnera…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Low 3.7
  CVE-2026-11525

  undici vulnerable to Set-Cookie SameSite attribute downgrade via permissive substring matching

  Impact: When undici parses a Set-Cookie header, it accepts any SameSite attribute value that contains Strict, Lax, or None as a substring, rather than the case-insensitive exact match specified by RFC 6265. Non-spec values are silently mapped to one of the th…

  undici undici renovate prism Debian Ubuntu Azure Linux Wolfi npm
  Jun 17, 2026
• Low 3.7
  CVE-2026-48931

  A flaw in Node.js HTTP Agent can cause a client to accept as valid a response that is send before the client has sent t…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  Jun 22, 2026
• Low 3.7
  CVE-2026-6733

  undici vulnerable to HTTP response queue poisoning via keep-alive socket reuse

  Impact: Undici's HTTP/1.1 client is vulnerable to response queue poisoning on reused keep-alive sockets. An attacker-controlled upstream server can inject an unsolicited HTTP/1.1 response onto an idle socket after a request completes. When the client dispatch…

  undici undici renovate prism Debian Ubuntu Wolfi npm
  Jun 17, 2026
• Low 3.3
  CVE-2026-48935

  A flaw in Node.js Permission API can cause a file metadata to be modified even on a path that was set as read-only with…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine
  Jun 26, 2026
• Low 1.8
  CVE-2026-48617

  A flaw in Node.js Permission Model enforcement allows Bypass via `process.report.writeReport()` Path Misvalidation. Thi…

  Node.js node nodejs nodejs Debian Ubuntu Azure Linux Alpine Wolfi
  Jun 18, 2026

References

• article
  https://access.redhat.com/security/updates/classification/#important
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2476810
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2489980
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2490000
• report
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• report
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• report
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• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2490024
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493325
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493326
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493329
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493331
• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493332
• report
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• report
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• report
  https://bugzilla.redhat.com/show_bug.cgi?id=2493337
• article
  https://issues.redhat.com/browse/RHEL-186582
• advisory
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• report
  https://access.redhat.com/security/cve/CVE-2026-6733
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-6733
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-6733
• article
  https://cna.openjsf.org/security-advisories.html
• article
  https://github.com/nodejs/undici/security/advisories/GHSA-35p6-xmwp-9g52
• article
  https://hackerone.com/reports/3582376
• report
  https://access.redhat.com/security/cve/CVE-2026-6734
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-6734
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-6734
• article
  https://github.com/nodejs/undici/security/advisories/GHSA-hm92-r4w5-c3mj
• report
  https://access.redhat.com/security/cve/CVE-2026-9678
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-9678
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-9678
• article
  https://github.com/nodejs/undici/security/advisories/GHSA-pr7r-676h-xcf6
• report
  https://access.redhat.com/security/cve/CVE-2026-9697
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-9697
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-9697
• article
  https://github.com/nodejs/undici/security/advisories/GHSA-vmh5-mc38-953g
• report
  https://access.redhat.com/security/cve/CVE-2026-11525
• advisory
  https://www.cve.org/CVERecord?id=CVE-2026-11525
• advisory
  https://nvd.nist.gov/vuln/detail/CVE-2026-11525