GHSA-wv94-5qcp-6m36: praisonai (CVE-2026-55531)

Package	Ecosystem	Affected	Fixed in
praisonai	PyPI	<4.6.58	4.6.58

Machine-written summary

Summary written by Claude Haiku from the source advisory. Not reviewed by a person.

Affected: PraisonAI (PyPI praisonai) versions before 4.6.58. The MCP HTTP-stream server creates an in-memory session on every initialize request and never removes them, because the session cleanup routine is never called and no session cap exists. An unauthenticated client who can reach the endpoint, directly or from a web page the operator visits, can make memory grow without bound until the process is killed. Upgrade to praisonai 4.6.58, which fixes this.

Written 1 Nov 2026.

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
6.5	Medium	3.1	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H	CNA (GitHub_M)

CISA KEV Not listed.
EPSS 0.0045, the 39th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

31 Oct 2026, 14:10 UTC First seen by agentprime
31 Oct 2026, 14:10 UTC Confirmed by OSV

Sources

Facts on this page come from the GitHub Advisory Database (CC-BY 4.0), OSV and the other sources listed, as published. We don’t reproduce full advisory descriptions, which can contain exploit code.