# CVE-2025-71377

## Summary

- **CVE ID:** CVE-2025-71377
- **Severity:** HIGH
- **CVSS Score:** 8.7 (CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N)
- **CWE:** CWE-1025
- **Published:** Jul 16, 2026
- **Last Modified:** Jul 20, 2026

## 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.

## Affected Products

- stoatchat — stoatchat (0)
- stoatchat — stoatchat (20250210-1 (0.8.2))
- stoatchat — stoatchat (0.8.2)

## References

- [CNA](https://github.com/stoatchat/stoatchat/security/advisories/GHSA-h7h6-7pxm-mc66)
- [CNA](https://github.com/stoatchat/stoatchat/commit/5f84daa9dba34c103cd83a2ee1f5e5ba900bfe94)
- [CNA](https://www.vulncheck.com/advisories/stoatchat-before-20250210-1-unrestricted-message-history-fetch)

## Exploitation Prediction (EPSS)

- **EPSS Score:** 0.67%
- **EPSS Percentile:** 49.7

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_Exported from OnDuty AI Vulnerability Intelligence on 2026-09-10._