How to Fix CVE-2026-22664: prompts.chat (Bundle Sibling)

*By Sai Kiran Pandrala*

Last verified: 2026-05-25

CVE-2026-22664 is a sibling vulnerability in the same F prompts.chat advisory bundle as CVE-2026-22661. The same patched build closes every CVE in the bundle, so the remediation procedure for CVE-2026-22664 matches the primary write-up.

What is different about CVE-2026-22664?

prompts.chat prior to commit 30a8f04 contains a server-side request forgery vulnerability in Fal.ai media status polling that allows authenticated users to perform arbitrary outbound requests by supplying attacker-controlled URLs in the token parameter. Attackers can exploit the lack of URL validation to disclose the FAL_API_KEY in the Authorization header, enabling credential theft, internal network probing, and abuse of the victim's Fal.ai account.

Impact is consistent with the bundle: server-side request forgery against internal resources. The patched build closes every code path in the advisory in one update.

How to fix CVE-2026-22664

Apply the patched build per the primary write-up: How to Fix CVE-2026-22661.

For a quick check, confirm the running version of prompts.chat:

# Confirm the installed version via your package manager
dpkg -l | grep -i prompts.chat   # Debian/Ubuntu
rpm -qa | grep -i prompts.chat   # RHEL/CentOS/Rocky

Frequently asked questions

Is CVE-2026-22664 being actively exploited?

Not at the time of writing. It is not listed in CISA's Known Exploited Vulnerabilities catalog. That status can change, so monitor the vendor advisory and the KEV catalog if the system is exposed.

How severe is CVE-2026-22664?

CVSS rates it 7.1 (High). Use that score to set your patch priority alongside the other items in your queue.

Do I have to take prompts.chat offline to apply the patch?

It depends on the deployment. High-availability or clustered installs can usually patch one node at a time with no full outage. Standalone installs typically need a short restart. Always follow the vendor's documented upgrade steps.

What if my vulnerability scanner still flags CVE-2026-22664 after I patch?

Re-run the scan after a service restart, then confirm the scanner's plugin set is up to date. Some scanners detect by banner version only and lag the official fix metadata by a release.

References

• Official vendor advisory: https://gist.github.com/mdisec/27c0cac0ec6a8f3c8f85a18987ddb942
• NVD entry: https://nvd.nist.gov/vuln/detail/CVE-2026-22664
• CISA KEV catalog: https://www.cisa.gov/known-exploited-vulnerabilities-catalog
• Primary write-up: How to Fix CVE-2026-22661

*Written by Sai Kiran Pandrala. Last verified 2026-05-25. Part of the F prompts.chat advisory bundle. Full procedure at how-to-fix-cve-2026-22661.*