CVE-2025-71377 | stoatchat (delta) versions before 20250210-1 (0.8.2) contain… | CVSS 8.7 HIGH

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.

Metadata

CVE ID: CVE-2025-71377
State: PUBLISHED
Assigner: VulnCheck
Reserved: 2026-06-20 13:11 UTC
Published: 2026-07-16 12:19 UTC
Last updated: 2026-07-16 12:59 UTC
Primary CWE: CWE-1025
Comparison Using Wrong Factors
Vendor / Product: stoatchat / stoatchat
Sources: cve.org · NVD

Severity & Metrics

8.7 HIGH CVSS 4.0

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

SSVC — CISA Coordinator

Exploitation: none
Automatable: yes
Tech. Impact: partial

Affected products (1)

Vendor	Product	Platform	Versions
stoatchat	stoatchat	—	0 < 20250210-1 (0.8.2), 20250210-1 (0.8.2)

Weakness (CWE)

CWE	Source	Description
CWE-1025	cna	Comparison Using Wrong Factors

CVSS scores (1)

Score	Severity	Version	Source	Vector
8.7	HIGH	4.0	cna	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

References (3)

GitHub Security Advisory (GHSA-h7h6-7pxm-mc66) https://github.com/stoatchat/stoatchat/security/advisories/GHSA-h7h6-7pxm-mc66
https://github.com/stoatchat/stoatchat/commit/5f84daa9dba34c103cd83a2ee1f5e5ba900bfe94 https://github.com/stoatchat/stoatchat/commit/5f84daa9dba34c103cd83a2ee1f5e5ba900bfe94
VulnCheck Advisory: stoatchat before 20250210-1 Unrestricted Message History Fetch https://www.vulncheck.com/advisories/stoatchat-before-20250210-1-unrestricted-message-history-fetch