CVE-2026-33241: Salvo is a Rust web framework

Q: How do I fix CVE-2026-33241?

salvo: upgrade to 0.89.3. Exact commands for each OS are on this page.

Q: Is CVE-2026-33241 being exploited?

CVE-2026-33241 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

Q: What does CVE-2026-33241 affect?

CVE-2026-33241 affects salvo. Severity is high (CVSS 7.5). 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 attac

Q: How urgent is CVE-2026-33241?

Priority 46/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

This week

HIGH 7.5REMOTEUPGRADE

CVE-2026-33241 is a high-severity flaw (CVSS 7.5) affecting salvo. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

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 this priority

High severity
Public exploit reference
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	7.5 (High)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.4% (top 62%)
CISA exploited list	No
Weakness	CWE-770
Published	2026-03-24
Last modified	2026-06-17

Publisher (CNA): GitHub, Inc. · Vendor: salvo

Last updated 2026-06-17 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2026-03-24 00:16 UTCPublished CVE record published
2026-06-17 10:37 UTCUpdated Record last modified

salvo salvo UPGRADE

Affected: < 0.89.3

Fixed in: 0.89.3

Safe to downgrade to: no unaffected older release

1. Check installed version

apt-cache policy salvo || rpm -q salvo || salvo --version

2. UPGRADE to 0.89.3 (Debian / Ubuntu)

sudo apt update && sudo apt install --only-upgrade salvo

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade salvo

Note

Distros often backport fixes without changing the version number. Confirm with the distro advisory or changelog.

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2026-33241?

salvo: upgrade to 0.89.3. Exact commands for each OS are on this page.

Is CVE-2026-33241 being exploited?

CVE-2026-33241 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2026-33241 affect?

CVE-2026-33241 affects salvo. Severity is high (CVSS 7.5). 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 attac

How urgent is CVE-2026-33241?

Priority 46/100. High severity; Public exploit reference; Remotely exploitable, no login, no user action

Related CVEs

CVE-2026-33242 HIGH 7.5 UPGRADE Salvo is a Rust web framework

References

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