CVE-2017-16570 — KeystoneJS before 4

KeystoneJS before 4.0.0-beta.7 allows application-wide CSRF bypass by removing the CSRF parameter and value, aka SecureLayer7 issue number SL7_KEYJS_03. In other words, it fails to reject requests that lack an x-csrf-token header.

01What is this vulnerability?

KeystoneJS before 4.0.0-beta.7 allows application-wide CSRF bypass by removing the CSRF parameter and value, aka SecureLayer7 issue number SL7_KEYJS_03. In other words, it fails to reject requests that lack an x-csrf-token header.

02Affected products

No structured affected-product list available — see references below for vendor advisories.

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: 2017-11-06T08:29:00.377
• Last modified: 2026-05-13T00:24:29.033

09References

• blog.securelayer7.net — http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/
• github.com — https://github.com/keystonejs/keystone/issues/4437
• github.com — https://github.com/keystonejs/keystone/pull/4478
• www.exploit-db.com — https://www.exploit-db.com/exploits/43922/
• blog.securelayer7.net — http://blog.securelayer7.net/keystonejs-open-source-penetration-testing-report/
• github.com — https://github.com/keystonejs/keystone/issues/4437
• github.com — https://github.com/keystonejs/keystone/pull/4478
• www.exploit-db.com — https://www.exploit-db.com/exploits/43922/