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TI-2026-25659 Aliases CVE-2026-33241GHSA-pp9r-xg4c-8j4x

Salvo Affected by Denial of Service via Unbounded Memory Allocation in Form Data Parsing

Priority HIGH 77CWE-770Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
Denial of service
Confidentiality · integrity · availability
None · None · High
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA and GitHub. Impact type from CWE-770.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV
EPSS 0.00444 38th percentileScored 2026-11-07
Public exploit Yes 1 exploit referenceTagged by NVD
Fix Fixed salvo (salvo-rs): 0.89.3salvo (crates.io): 0.89.3

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
Poc
Automatable
Yes
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
salvo-rssalvobefore 0.89.30.89.3Patch availableCNA
—salvo (crates.io)before 0.89.30.89.3Patch availableGHSA-pp9r-xg4c-8j4x
  • salvo Vendorsalvo-rs Affected before 0.89.3 Fixed in 0.89.3 Patch available CNA
  • salvo (crates.io) Vendor— Affected before 0.89.3 Fixed in 0.89.3 Patch available GHSA-pp9r-xg4c-8j4x

CPE configurations NVD · 1

CPEVersionsRoleVendor
cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:*before 0.89.3Vulnerablesalvo-rs
  • cpe:2.3:a:salvo:salvo:*:*:*:*:*:rust:*:* Versions before 0.89.3 Vulnerable ·salvo-rs

Remediation

  • Fix · CNA salvo (salvo-rs) Fixed in 0.89.3
  • Fix · GHSA-pp9r-xg4c-8j4x salvo (crates.io) Fixed in 0.89.3 Advisory →

Timeline

  1. 2026-10-02 Threatist record created from CVE-2026-33241
  2. 2026-10-03 Alias added: GHSA-pp9r-xg4c-8j4x

References

Exploit 1

Patch 1

Advisory 1

Other 1

  • TI-2026-25660 Salvo has a Path Traversal in salvo-proxy::encode_url_path allows API Gateway Bypass CVSS 3.1HIGH 7.5
  • TI-2026-17867 Salvo is vulnerable to stored XSS in the list_html function by uploading files with malicious names CVSS 3.1HIGH 8.8
  • TI-2026-17866 Salvo is vulnerable to reflected XSS in the list_html function CVSS 3.1HIGH 8.8

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences