CVE-2026-22034 json
Snuffleupagus vulnerable to RCE on instances with upload validation enabled but without the VLD package
published 2026-01-08 10 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-1676
- cvss
- 9.8
- version 3.1, NVD
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.7%
- EPSS 0.7% chance of exploitation in 30 days, percentile 53%
- public exploits
- 0
- none known
Summary
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.
Patch / fix
- jvoisin snuffleupagus 0.13.0
- snuffleupagus Debian 14 0.13.0-1
debian advisories DEBIAN-CVE-2026-22034
CISA SSVC
- Exploitation
- Proof of concept is public
- Automatable
- yes
- Technical impact
- total
- Assessed
- 10 mo ago
Exploit prediction
0.71% chance of exploitation in the next 30 days, higher than 53% of all scored CVEs (FIRST EPSS, 2026-11-08).
Exploits and checks
- github.com https://github.com/jvoisin/snuffleupagus/security/advisories/GHSA-c4ch-xw5p-2mvc referenced PoC, tagged "exploit" by a source, unverified
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N |
| CNA | 4.0 | 9.2 | CVSS:4.0/AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X |
| NVD | 3.1 | 9.8 | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
Affected products
- jvoisin snuffleupagus
Classification
- Weakness
-
- CWE-636 Not Failing Securely
References
-
github.com
/jvoisin/snuffleupagus/commit/9278dc77bab2a219e770a1b31dd6797bc9070e37
patch
-
github.com
/jvoisin/snuffleupagus/security/advisories/GHSA-c4ch-xw5p-2mvc
exploit, patch, vendor-advisory
-
github.com
/jvoisin/snuffleupagus/blob/9278dc77bab2a219e770a1b31dd6797bc9070e37/src/sp_upload_validation.c#L92-L100
product
-
github.com
/jvoisin/snuffleupagus/blob/v0.12.0/scripts/upload_validation.php
product
-
github.com
/jvoisin/snuffleupagus/blob/v0.12.0/scripts/upload_validation.py
product
-
github.com
/php/php-src/blob/e4098da58a9eaee759d728d98a27d809cde37671/ext/standard/dl.c#L165-L166
product
-
github.com
/php/php-src/blob/e4098da58a9eaee759d728d98a27d809cde37671/main/rfc1867.c#L1269-L1274
product
-
snuffleupagus.readthedocs.io
/config.html#upload-validation
product
Sources
- CVE List CVE-2026-22034
- NVD CVE-2026-22034
Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.