CVE-2026-22034

CVE-2026-22034 is a critical-severity vulnerability in Jvoisin Snuffleupagus with a CVSS 3.x base score of 9.8. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-636.

Key facts

Description

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 are evaluated as PHP code. The issue was fixed in version 0.13.0.

Frequently asked questions

What is CVE-2026-22034?
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 are evaluated as PHP code. The issue was fixed in version 0.13.0.
How severe is CVE-2026-22034?
CVE-2026-22034 has a CVSS 3.x base score of 9.8, rated critical severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity high, and availability high.
Is CVE-2026-22034 being actively exploited?
It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (47th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-22034?
CVE-2026-22034 affects Jvoisin Snuffleupagus. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-22034?
Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
Does CVE-2026-22034 have an EU (EUVD) identifier?
Yes. CVE-2026-22034 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-1676.
When was CVE-2026-22034 published?
CVE-2026-22034 was published on 2026-01-08 and last updated on 2026-06-17.

References

Affected products (1)

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