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Advisory record · GHSA-3w55-933p-8pv5

Strands Agents: Local Privilege Escalation via Symlink Attack in Default Session File Storage

CVSS 7.1 High

Published by the GitHub Advisory Database at 27 Oct 2026, 15:34 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
strands-agentsPyPI<1.48.01.48.0
Identifiers
GHSA-3w55-933p-8pv5
Weakness (CWE)
CWE-59
Tags
Published
27 Oct 2026
Updated
27 Oct 2026

Machine-written summary

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

Strands Agents (PyPI package strands-agents) before 1.48.0 stores default file session data in a shared temporary directory and writes files without guarding against symbolic links. A local attacker can plant links or crafted session files there to overwrite files the victim can write or alter restored conversation history, which the source says can lead to local privilege escalation. Upgrade to strands-agents 1.48.0 or later.

Written 31 Oct 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

ScoreRatingCVSSVectorSource
7.1 High 3.1 CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:N/I:H/A:H GitHub Advisory Database
  • CISA KEV Not listed.
  • EPSS No score.

Timeline

  1. 31 Oct 2026, 14:07 UTC First seen by agentprime
  2. 31 Oct 2026, 14:07 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.