CVE-2025-71377 stoatchat before 20250210-1 Unrestricted Message History Fetch
Remote unauthenticated attackers can cause denial of service and exfiltrate message history by exploiting a logic error in message fetching limits.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- None listed
What is CVE-2025-71377?
CVE-2025-71377 is a high-severity denial of service vulnerability in stoatchat, published on 16 Jul 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
stoatchat (delta) versions before 20250210-1 (0.8.2) contain a logic error in the query messages route. When fetching messages 'nearby' another message, the database query can be given a message limit of zero, which the database interprets as 'no limit'. A remote unauthenticated attacker can craft nearby message fetch requests to download an entire channel's message history in a single expensive request, and can send many such requests in parallel, resulting in denial of service through resource exhaustion.
Weakness: CWE-1025
Which versions are affected by CVE-2025-71377?
How do I fix CVE-2025-71377?
No fix has been published for CVE-2025-71377 yet. Limit exposure of the affected software until one is available.
Upgrade, then put limits on request size, rate and nesting depth so one client cannot exhaust the service. More about Denial of service.
Is CVE-2025-71377 being exploited?
There is no known exploitation of CVE-2025-71377 in the wild and no public exploit code.
Sources
Also known as GHSA-6j45-2pq3-r728, GHSA-h7h6-7pxm-mc66.