CVE-2026-22034: Snuffleupagus is a module that raises the cost of attacks against website by killing bug classes and providing

Q: How do I fix CVE-2026-22034?

snuffleupagus: upgrade to 0.13.0. Exact commands for each OS are on this page.

Q: Is CVE-2026-22034 being exploited?

CVE-2026-22034 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-2026-22034 affect?

CVE-2026-22034 affects snuffleupagus. Severity is critical (CVSS 9.8). Snuffleupagus is a module that raises the cost of attacks against website by killing bug classes and providing a virtual patching system. On deployments of Snuffleupagus prior to version 0.13.0 with the non-default upload validation feature

Q: How urgent is CVE-2026-22034?

Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

This week

CRITICAL 9.8REMOTEUPGRADE

CVE-2026-22034 is a critical-severity flaw (CVSS 9.8) affecting snuffleupagus. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Snuffleupagus is a module that raises the cost of attacks against website by killing bug classes and providing a virtual patching system. On deployments of Snuffleupagus prior to version 0.13.0 with the non-default upload validation feature enabled and configured to use one of the upstream validation scripts based on Vulcan Logic Disassembler (VLD) while the VLD extension is not available to the CLI SAPI, all files from multipart POST requests ar

Why this priority

Critical severity
Public exploit reference
CISA SSVC: automatable with total technical impact
Remotely exploitable, no login, no user action

A fixed release or distro patch exists.

Risk facts

CVSS score	9.8 (Critical)
Attack vector	Network (remote)
Attack complexity	Low
Privileges needed	None
User interaction	None
EPSS exploit chance	0.7% (top 46%)
CISA exploited list	No
Weakness	CWE-636
Published	2026-01-08
Last modified	2026-06-17

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

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

Am I affected?

Timeline

2026-01-08 15:15 UTCPublished CVE record published
2026-06-17 10:19 UTCUpdated Record last modified

jvoisin snuffleupagus UPGRADE

Affected: < 0.13.0

Fixed in: 0.13.0

Safe to downgrade to: no unaffected older release

1. Check installed version

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

2. UPGRADE to 0.13.0 (Debian / Ubuntu)

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

2. UPGRADE (RHEL / Amazon Linux / Fedora)

sudo dnf upgrade snuffleupagus

Note

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

Exact fixes by distribution

Fedora ELN · fwupd-efi · FIXED · 1.9-3.eln159 · FEDORA-2026-44fd42db42 · source

sudo dnf upgrade --advisory=FEDORA-2026-44fd42db42

Fedora 46 · crest · FIXED · 3.0.2-1.fc46 · FEDORA-2026-b49adefa8f · source

sudo dnf upgrade --advisory=FEDORA-2026-b49adefa8f

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-2026-22034?

snuffleupagus: upgrade to 0.13.0. Exact commands for each OS are on this page.

Is CVE-2026-22034 being exploited?

CVE-2026-22034 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-2026-22034 affect?

CVE-2026-22034 affects snuffleupagus. Severity is critical (CVSS 9.8). Snuffleupagus is a module that raises the cost of attacks against website by killing bug classes and providing a virtual patching system. On deployments of Snuffleupagus prior to version 0.13.0 with the non-default upload validation feature

How urgent is CVE-2026-22034?

Priority 61/100. Critical severity; Public exploit reference; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action

References

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