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.
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: 0.005 (41.7th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 42nd percentile — 41.7% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.004 · newest: 0.005 · change: +0.001
Affected products
- Salvo
- Salvo-Rs Salvo — versions < 0.89.3
Weakness classification (CWE)
References
- github.com/salvo-rs/salvo/security/advisories/GHSA-pp9r-xg4c-8j4x (Exploit, Vendor Advisory)
- github.com/salvo-rs/salvo/releases/tag/v0.89.3 (Patch)
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.