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Advisory record · GHSA-434r-7c99-hwf3

Nanobot contains a server-side request forgery vulnerability in the web_fetch tool

CVSS 5.3 MediumEPSS 0.0036 · 29th percentile

Published by the GitHub Advisory Database at 1 Jun 2026, 21:30 UTC. agentprime has not analysed this yet, so whether it affects any app is not known.

PackageEcosystemAffectedFixed in
nanobot-aiPyPI<0.2.10.2.1
Identifiers
GHSA-434r-7c99-hwf3 · CVE-2026-49138 · PYSEC-2026-3580
Weakness (CWE)
CWE-918
Tags
Published
1 Jun 2026
Updated
4 Aug 2026

Machine-written summary

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

Nanobot versions before 0.2.1 are vulnerable to server-side request forgery through the web_fetch tool. A remote attacker who can supply a URL to that tool can use a redirect to a loopback or private address to make the server send requests to internal hosts, because redirects are followed before the final address is checked. Upgrade to nanobot-ai version 0.2.1 or later, which is the fixed version listed.

Written 5 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

ScoreRatingCVSSVectorSource
5.3 Medium 4.0 CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:L/SI:N/SA:N CNA (VulnCheck)
  • CISA KEV Not listed.
  • EPSS 0.0036, the 29th percentile, on 14 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.

Timeline

  1. 1 Jun 2026, 19:41 UTC Confirmed by the CVE List
  2. 31 Oct 2026, 14:40 UTC First seen by agentprime
  3. 31 Oct 2026, 14:40 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.