Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
The npm package payload is vulnerable in versions below 3.90.0 and in the 4.0.0 canary builds from 4.0.0-canary.0 up to but not including 4.0.0-canary.34. A readable collection that has a relationship to a collection protected by an access.read where constraint can expose information about protected documents in the related collection. Users should upgrade to 3.90.0 or 4.0.0-canary.34 or later, as the source says there is no complete workaround.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.9 | Medium | 4.0 | CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N | CNA (GitHub_M) |
- CISA KEV Not listed.
- EPSS 0.0027, the 19th percentile, on 15 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:34 UTC First seen by agentprime
- 31 Oct 2026, 13:34 UTC Confirmed by OSV