CVE-2026-33241

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

HIGH
7.5
CVSS Score
Published: March 23, 2026 at 11:41 PM UTC
Updated: June 17, 2026 at 10:37 AM UTC
2 products affected across 2 vendorsSalvoSalvo

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Severity
HIGH7.5
Exploit prediction
EPSS 0.4%
SSVC
PoC

Description

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.

Affected

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

v < 0.89.3
v < 0.89.3
Affected range stops below 0.89.3, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

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

References (2)

x_refsource_CONFIRMExploitVendor Advisory
Source: cverecord
https://github.com/salvo-rs/salvo/security/advisories/GHSA-pp9r-xg4c-8j4x
x_refsource_MISCPatch
Source: cverecord
https://github.com/salvo-rs/salvo/releases/tag/v0.89.3

SSVC — Action Prioritization

SSVCPoCAutomatablePartial impact

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

CVSS

Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-770

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