CVE-2025-71377

stoatchat before 20250210-1 Unrestricted Message History Fetch

HIGH
8.7
CVSS Score
Published: July 16, 2026 at 12:19 PM UTC
Updated: October 6, 2026 at 10:10 PM UTC
1 product affected across 1 vendorStoatchat

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Severity
HIGH8.7
Exploit prediction
EPSS 0.7%
SSVC
No known exploit

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

v < 0.8.2
Vendor states this is fixed in 0.8.2 (unaffected)

Remediation

No guide yet

No remediation guidance has been written for this CVE yet. What the record does show:

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

8.7HIGHVulnCheck
Vector?

Quick Info

StatusDEFERRED
CWE
CWE-1025

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