Furion .NET Framework View ViewEngine.cs RunCompile special elements in template engine

published 2026-10-11 29 d ago modified 2026-10-13 26 d ago also EUVD-2026-96876

cvss: 6.3; version 3.1, CNA
cisa kev: Not listed; not in CISA's catalog
epss: 0.3%; EPSS 0.3% chance of exploitation in 30 days, percentile 20%
public exploits: 0; none known

A security flaw has been discovered in Furion .NET Framework up to 4.9.9.95. This affects the function RunCompile of the file framework/Furion/ViewEngine/Engines/ViewEngine.cs of the component View Engine. The manipulation of the argument content results in improper neutralization of special elements used in a template engine. The attack can be executed remotely. The exploit has been released to the public and may be used for attacks. The vendor was contacted early about this disclosure but did not respond in any way.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 26 d ago (2026-10-13)

Exploit prediction

0.28% chance of exploitation in the next 30 days, higher than 20% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

vuldb.com https://vuldb.com/submit/954714 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
CNA	4.0	5.3	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
CNA	3.0	6.3	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L/E:P/RL:X/RC:C
CNA	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P/E:POC/RL:ND/RC:C
CNA	4.0	2.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:L/VA:L/SC:N/SI:N/SA:N/E:P/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
CNA	3.1	6.3	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L
CNA	2.0	6.5	AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

Furion .NET Framework

Classification

Weakness

CWE-1336 Improper Neutralization of Special Elements Used in a Template Engine
CWE-791 Incomplete Filtering of Special Elements

References

vuldb.com /submit/954714
third-party-advisory, exploit
vuldb.com /vuln/416227
vdb-entry, technical-description
vuldb.com /vuln/416227/cti
signature, permissions-required
vuldb.com /cve/CVE-2026-108570
third-party-advisory

Sources

CVE List CVE-2026-108570
NVD CVE-2026-108570

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.

Summary