Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Affected versions of the Packagist package pocketmine/pocketmine-mp are those before 5.39.2, and the fix is in 5.39.2. Entities that have died or whose player has quit remain reachable by entity ID while flagged for despawn, so an attacker with a second client who attacks in a narrow window around a disconnect can cause a death handler to run again, duplicating dropped loot and XP. Upgrade to 5.39.2 or later; for older versions, the source suggests a plugin cancelling damage events against entities already flagged for despawn.
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 |
|---|---|---|---|---|
| 6.3 | Medium | 4.0 | CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N | CNA (VulnCheck) |
- CISA KEV Not listed.
- EPSS 0.0035, the 28th percentile, on 5 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 13:56 UTC First seen by agentprime
- 31 Oct 2026, 13:56 UTC Confirmed by OSV