CVSS 3.1
4.3 mediumCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NCVE-2026-18689 ibm api connect: Incorrect Authorization
Medium (4.3) in ibm api connect. EPSS 0.3% estimated probability of exploitation activity in the next 30 days.
IBM API Connect 10.0.8.0 through 10.0.8.12 and 12.1.0.0 through 12.1.1.2 could allow an authenticated user to obtain limited information about other organizations due to incorrect authorization. A token issued for a limited purpose is accepted where it should not be, which could reveal the names of other organizations.
Severity
- EPSS
- 0.3% estimated probability of exploitation activity in the next 30 days; 21st percentile. Scored 2026-11-13. A forecast for this CVE across the internet, not for your own systems.
- CISA's assessment (SSVC)
- Exploitation: none · Automatable: no · Technical impact: partial, assessed 2026-11-08. From CISA's Vulnrichment in the CVE List: whether it is exploited, whether exploiting it can be automated, and how much control it gives.
- CWE
- CWE-863 Incorrect Authorization
- OWASP Top 10
- A01:2025 Broken Access Control
- Published
- Modified
- NVD analysis
- Awaiting analysis
- Record from
- the NVD, synced
Ask an AI about this CVE
Show the prompt
Explain CVE-2026-18689 for an engineer deciding whether to act. Use https://cve.bz/api/public/cves/CVE-2026-18689?via=ask-ai-copy and https://cve.bz/cve/CVE-2026-18689?via=ask-ai-copy as the source of truth: what is affected and which versions fix it, whether it is in CISA KEV, public exploits, and its EPSS (an internet-wide 30-day estimate of exploitation activity, not a forecast for my systems). If they give no fixed versions, use the CVE record https://cveawg.mitre.org/api/cve/CVE-2026-18689 or the vendor advisory, not third-party mirrors. Tell me how to check whether I am affected and how to verify a fix. Cite the sources and say where they are uncertain.Opens a third-party assistant; its answer is its own, not cve.bz's. The prompt holds only this CVE's id and public links.
Badge for a README or a site
An image that stays current: it is drawn from the data each time it is fetched (a host that proxies images, as GitHub does, may show its copy for a while). Markdown:
[](https://cve.bz/cve/CVE-2026-18689)
HTML:
<a href="https://cve.bz/cve/CVE-2026-18689"><img src="https://cve.bz/cve/badge/CVE-2026-18689.svg" alt="CVE-2026-18689"></a>
Affected
- ibm:api connect
Versions
From the CNA's record in the CVE List.
| Product | Affected |
|---|---|
| IBM API Connect | from 12.1.0.0 through 12.1.1.2 |
| IBM API Connect | from 10.0.8.0 through 10.0.8.12 |