CVE-2023-26108 — Versions of the package @nestjs/core before 9

Versions of the package @nestjs/core before 9.0.5 are vulnerable to Information Exposure via the StreamableFile pipe. Exploiting this vulnerability is possible when the client cancels a request while it is streaming a StreamableFile, the stream wrapped by the StreamableFile will

01What is this vulnerability?

Versions of the package @nestjs/core before 9.0.5 are vulnerable to Information Exposure via the StreamableFile pipe. Exploiting this vulnerability is possible when the client cancels a request while it is streaming a StreamableFile, the stream wrapped by the StreamableFile will be kept open.

02Affected products

Vendor	Product	Versions
n	a / @nestjs/core	0

03Active exploitation status

Not currently listed on the CISA Known Exploited Vulnerabilities (KEV) catalog. EPSS is the best forward-looking signal — see the EPSS row above.

04Recommended remediation

• Patch to a fixed version listed in the vendor advisory (see references below).
• Mitigate with WAF rules, network egress filters, or feature flags where the patch is not yet available.
• Hunt historical logs for exploitation indicators — see Detection signatures below.

05Technical details

For the full vendor write-up, exploit chains, and reference implementations, see the references list in section 09.

06Detection signatures

Ask SARA in chat to draft a starting detection for this CVE in your stack of choice.

07Related CVEs

No directly-cited follow-up CVEs in the KB record for this advisory. The references list in section 09 carries the vendor cross-references.

08Timeline

• Published: 2023-03-06T05:00:05.073Z
• Last modified: 2025-03-05T19:48:14.569Z

09References

• security.snyk.io — https://security.snyk.io/vuln/SNYK-JS-NESTJSCORE-2869127
• github.com — https://github.com/nestjs/nest/issues/9759
• github.com — https://github.com/nestjs/nest/pull/9819
• github.com — https://github.com/nestjs/nest/pull/9819/commits/f59cf5e81ca73bcdf1b5b36713550fd…