CVE-2019-5413 — An attacker can use the format parameter to inject arbitrary commands in the npm

An attacker can use the format parameter to inject arbitrary commands in the npm package morgan < 1.9.1.

01What is this vulnerability?

An attacker can use the format parameter to inject arbitrary commands in the npm package morgan < 1.9.1.

02Affected products

Vendor	Product	Versions
n	a / morgan	< 1.9.1

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: 2019-03-17T19:36:35.000Z
• Last modified: 2024-08-04T19:54:53.476Z

09References

• hackerone.com — https://hackerone.com/reports/390881
• lists.apache.org — https://lists.apache.org/thread.html/r8ba4c628fba7181af58817d452119481adce4ba92e…
• lists.apache.org — https://lists.apache.org/thread.html/rb5ac16fad337d1f3bb7079549f97d8166d0ef30826…