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chore(deps): update dependency @nestjs/core to v11.1.18 [security]#27

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chore(deps): update dependency @nestjs/core to v11.1.18 [security]#27
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renovate/npm-nestjs-core-vulnerability

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@renovate renovate bot commented Apr 16, 2026

This PR contains the following updates:

Package Change Age Confidence
@nestjs/core (source) 11.1.311.1.18 age confidence

GitHub Vulnerability Alerts

CVE-2026-35515

Impact

What kind of vulnerability is it? Who is impacted?

SseStream._transform() interpolates message.type and message.id directly into Server-Sent Events text protocol output without sanitizing newline characters (\r, \n). Since the SSE protocol treats both \r and \n as field delimiters and \n\n as event boundaries, an attacker who can influence these fields through upstream data sources can inject arbitrary SSE events, spoof event types, and corrupt reconnection state. Spring Framework's own security patch (6e97587) validates these same fields (id, event) for the same reason.

Actual impact:

  • Event spoofing: Attacker forges SSE events with arbitrary event: types, causing client-side EventSource.addEventListener() callbacks to fire for wrong event types.
  • Data injection: Attacker injects arbitrary data: payloads, potentially triggering XSS if the client renders SSE data as HTML without sanitization.
  • Reconnection corruption: Attacker injects id: fields, corrupting the Last-Event-ID header on reconnection, causing the client to miss or replay events.
  • Attack precondition: Requires the developer to map user-influenced data to the type or id fields of SSE messages. Direct HTTP request input does not reach these fields without developer code bridging the gap.

Patches

Has the problem been patched? What versions should users upgrade to?

Patched in @nestjs/core@11.1.18

Severity
  • CVSS Score: 6.3 / 10 (Medium)
  • Vector String: CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:N/VI:L/VA:L/SC:N/SI:L/SA:N

Release Notes

nestjs/nest (@​nestjs/core)

v11.1.18

Compare Source

v11.1.18 (2026-04-03)

Bug fixes
Dependencies
Committers: 6

v11.1.17

Compare Source

v11.1.17 (2026-03-16)
Enhancements
Bugs
  • platform-fastify
    • auto-run middleware for HEAD requests as fastify redirects them to GET handlers (effectively skipping middleware execution) cbdf737 (@​kamilmysliwiec)
Dependencies
Committers: 3

v11.1.16

Compare Source

v11.1.16 (2026-03-05)
Bug fixes
  • microservices
Dependencies
Committers: 2

v11.1.15

Compare Source

What's Changed
New Contributors

Full Changelog: nestjs/nest@v11.1.14...v11.1.15

v11.1.14

Compare Source

v11.1.14 (2026-02-17)

Bug fixes
Enhancements
Committers: 5

v11.1.13

Compare Source

v11.1.13 (2026-02-03)

Bug fixes
  • common
Enhancements
Dependencies
Committers: 6

v11.1.12

Compare Source

v11.1.12 (2026-01-15)
Bug fixes
Dependencies
Committers: 3

v11.1.11

Compare Source

v11.1.11 (2025-12-29)
Bug fixes
Dependencies
Committers: 3

v11.1.10

Compare Source

v11.1.10 (2025-12-22)
Bug fixes
Enhancements
Dependencies
Committers: 11

v11.1.9

Compare Source

v11.1.9 (2025-11-14)

Bug fixes
Enhancements
Dependencies
Committers: 4

v11.1.8

Compare Source

v11.1.7

Compare Source

v11.1.6

Compare Source

v11.1.6 (2025-08-07)

Bug fixes
Dependencies
Committers: 6

v11.1.5

Compare Source

v11.1.5 (2025-07-18)

Dependencies

v11.1.4

Compare Source

v11.1.4 (2025-07-16)

Bug fixes
Enhancements
Dependencies
Committers: 11

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@renovate renovate bot enabled auto-merge (squash) April 16, 2026 02:01
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