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Bump undici from 6.23.0 to 6.24.1

Closed
Number: #333
Type: Pull Request
State: Closed
Author: dependabot[bot] dependabot[bot]
Association: Unknown
Comments: 1
Created: March 14, 2026 at 10:07 AM UTC
(5 months ago)
Updated: April 10, 2026 at 01:00 PM UTC
(4 months ago)
Closed: April 10, 2026 at 01:00 PM UTC
(4 months ago)
Time to Close: 27 days
Labels:
dependencies javascript
Description:

Bumps undici from 6.23.0 to 6.24.1.

Release notes

Sourced from undici's releases.

v6.24.1

Full Changelog: https://github.com/nodejs/undici/compare/v6.24.0...v6.24.1

v6.24.0

Undici v6.24.0 Security Release Notes (LTS)

This release backports fixes for security vulnerabilities affecting the v6 line.

Upgrade guidance

All users on v6 should upgrade to v6.24.0 or later.

Fixed advisories

  • GHSA-2mjp-6q6p-2qxm / CVE-2026-1525 (Medium)
    Inconsistent interpretation of HTTP requests (request/response smuggling class issue).

  • GHSA-f269-vfmq-vjvj / CVE-2026-1528 (High)
    Malicious WebSocket 64-bit frame length handling could crash the client.

  • GHSA-4992-7rv2-5pvq / CVE-2026-1527 (Medium)
    CRLF injection via the upgrade option.

  • GHSA-v9p9-hfj2-hcw8 / CVE-2026-2229 (High)
    Unhandled exception from invalid server_max_window_bits in WebSocket permessage-deflate negotiation.

  • GHSA-vrm6-8vpv-qv8q / CVE-2026-1526 (High)
    Unbounded memory consumption in WebSocket permessage-deflate decompression.

Not applicable to v6

Affected and patched ranges (v6)

  • CVE-2026-1525: affected < 6.24.0, patched 6.24.0
  • CVE-2026-1528: affected >= 6.0.0 < 6.24.0, patched 6.24.0
  • CVE-2026-1527: affected < 6.24.0, patched 6.24.0
  • CVE-2026-2229: affected < 6.24.0, patched 6.24.0
  • CVE-2026-1526: affected < 6.24.0, patched 6.24.0

References

Commits
  • c0cf656 Bumped v6.24.1
  • f5a9f0c Fix v6 release workflow branch targeting
  • af2cb8f wqremove maxDecompressedMessageSize (#4891)
  • 8873c94 Bumped v6.24.0
  • 411bd01 test(websocket): use node:assert for Node 18 compatibility
  • 844bf59 test: fix http2 lint regressions in backport
  • a444e4f test: stabilize h2 and tls-cert-leak under current test runner
  • dc032a1 fix: h2 CI (#4395)
  • 4cd3f4b test: increase bitness in test/fixtures/*.pem (#3659)
  • 7df6442 fix: adapt websocket frame-limit handling for v6 parser
  • Additional commits viewable in compare view

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Package Dependencies
Package:
undici
Ecosystem:
npm
Version Change:
6.23.0 → 6.24.1
Update Type:
Minor
Security Advisories
Undici has Unbounded Memory Consumption in WebSocket permessage-deflate Decompression
GHSA-vrm6-8vpv-qv8q CVE-2026-1526 HIGH
## Description The undici WebSocket client is vulnerable to a denial-of-service attack via unbounded memory consumption during permessage-deflate decompression. When a WebSocket connection negotia...
Undici has Unhandled Exception in WebSocket Client Due to Invalid server_max_window_bits Validation
GHSA-v9p9-hfj2-hcw8 CVE-2026-2229 HIGH
### Impact The undici WebSocket client is vulnerable to a denial-of-service attack due to improper validation of the `server_max_window_bits` parameter in the permessage-deflate extension. When a ...
Undici has CRLF Injection in undici via `upgrade` option
GHSA-4992-7rv2-5pvq CVE-2026-1527 MODERATE
### Impact When an application passes user-controlled input to the `upgrade` option of `client.request()`, an attacker can inject CRLF sequences (`\r\n`) to: 1. Inject arbitrary HTTP headers 2. T...
Undici has Unbounded Memory Consumption in its DeduplicationHandler via Response Buffering that leads to DoS
GHSA-phc3-fgpg-7m6h CVE-2026-2581 MODERATE
## Impact This is an uncontrolled resource consumption vulnerability (CWE-400) that can lead to Denial of Service (DoS). In vulnerable Undici versions, when `interceptors.deduplicate()` is enabled...
Undici: Malicious WebSocket 64-bit length overflows parser and crashes the client
GHSA-f269-vfmq-vjvj CVE-2026-1528 HIGH
### Impact A server can reply with a WebSocket frame using the 64-bit length form and an extremely large length. undici's ByteParser overflows internal math, ends up in an invalid state, and throws...
Undici has an HTTP Request/Response Smuggling issue
GHSA-2mjp-6q6p-2qxm CVE-2026-1525 MODERATE
### Impact Undici allows duplicate HTTP `Content-Length` headers when they are provided in an array with case-variant names (e.g., `Content-Length` and `content-length`). This produces malformed H...
Technical Details
ID: 15191757
UUID: 4075384612
Node ID: PR_kwDOEeBrKM7KlRTT
Host: GitHub
Repository: NHSDigital/nhs-app-api