Resource exhaustion in Salvo
CVE-2026-33241
Salvo is a Rust web framework. Prior to version 0.89.3, Salvo's form data parsing implementations (`form_data()` method and `Extractible` macro) do not enforce payload size limits before reading request bodies into memory. This allows attackers to cause Out-of-Memory (OOM) conditions by sending extremely large payloads, leading to service crashes and denial of service. Version 0.89.3 contains a patch.
EPSS: 0.004 (35.8th percentile) — read the EPSS interpretation.
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.
Affected products
- Salvo
- Salvo-rs Salvo — versions < 0.89.3
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Vendor Advisory)
- security-advisories@github.com (Patch, x_refsource_MISC)
Frequently asked questions
- What is CVE-2026-33241?
- CVE-2026-33241 is a high-severity vulnerability in Salvo, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 7.5/10. Published 2026-03-24.
- How severe is CVE-2026-33241?
- High severity. CVSS v3 base score is 7.5 out of 10.