Resource exhaustion in Stoatchat
CVE-2026-73057
stoatchat before 0.15.0 fails to validate SVG viewBox dimensions in the proxy endpoint, allowing attackers to cause denial of service by memory exhaustion. Attackers can host malicious SVGs with extremely large width and height values and trigger concurrent requests to exhaust available memory across proxy replicas.
Vulnerability class: DoS (Denial of Service)
Published · last modified .
CVSS v3 metric
CVSS v3 base score 7.5 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H.
EPSS exploit prediction
EPSS: 0.003 (24.6th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 25th percentile — 24.6% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.003 · newest: 0.003 · change: +0.001
Affected products
- Stoatchat — versions 0, 0.15.0
Weakness classification (CWE)
References
- github.com/stoatchat/stoatchat/security/advisories/GHSA-x87r-h3mq-7mgr (vendor-advisory)
- www.vulncheck.com/advisories/stoatchat-before-uncapped-svg-rendering-denial-of-… (third-party-advisory)
Frequently asked questions
- What is CVE-2026-73057?
- CVE-2026-73057 is a high-severity vulnerability in Stoatchat, classified under Uncontrolled Resource Consumption. CVSS score: 7.5/10. Published 2026-08-16.
- How severe is CVE-2026-73057?
- High severity. CVSS v3 base score is 7.5 out of 10.