Is CVE-2026-100675 exploited in the wild?

No. Junglewise Threat Intelligence has no report of CVE-2026-100675 being exploited in the wild.

How severe is CVE-2026-100675?

Medium severity, with a CVSS score of 6.5, published 26 September 2026.

Is there a fix for CVE-2026-100675?

A patch was published on 2026-09-26: Fixed in version 0.15.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.

How is CVE-2026-100675 attacked?

It is attacked over the network, in a hosted service.

Am I affected by CVE-2026-100675?

Check whether you run Stoatchat at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

CVE-2026-100675: stoatchat denial of service in acknowledgement worker

CVE-2026-100675 · Severity: medium · CVSS 6.5 · Published 2026-09-26

stoatchat is a messaging platform with push notifications and mention badges. An authenticated user can crash all acknowledgement workers by sending five specially crafted role-mention messages, disabling push notifications and mention badges for all users deployment-wide until the API process is manually restarted. This is a service disruption attack requiring only user authentication.

Quick answers

Is CVE-2026-100675 exploited in the wild?: No. Junglewise Threat Intelligence has no report of CVE-2026-100675 being exploited in the wild.
How severe is CVE-2026-100675?: Medium severity, with a CVSS score of 6.5, published 26 September 2026.
Which products and versions are affected?: Stoatchat before 0.15.5.
Is there a fix for CVE-2026-100675?: A patch was published on 2026-09-26: Fixed in version 0.15.5 Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-100675 attacked?: It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-100675?: Check whether you run Stoatchat at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

Technical details

The vulnerability is an uncaught exception (panic) in the mass-mention processing code when a role mention is not properly cleared from Saved Notes messages. The acknowledgement worker assumes mass mentions originate from a TextChannel and panics when encountering other channel types. Five workers consume the same queue without supervision, so five crafted messages terminate the entire worker pool. An authenticated attacker can trigger this by sending role-mention messages to their own Saved Notes channel.

Affected products

stoatchat before 0.15.5

Timeline

2026-09-26: disclosed
2026-09-26: patched: Fixed in version 0.15.5

References

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