SSCMS layerImage Endpoint LayerImageController.Submit.cs path traversal

published 2026-03-22 7 mo ago modified 2026-06-17 4 mo ago also EUVD-2026-14294

cvss: 5.4; 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 25%
public exploits: 0; none known

A vulnerability has been found in SSCMS 4.7.0. The affected element is an unknown function of the file LayerImageController.Submit.cs of the component layerImage Endpoint. Such manipulation of the argument filePaths leads to path traversal. The attack may be performed from remote. The exploit has been disclosed to the public and may be used.

CISA SSVC

Exploitation: Proof of concept is public
Automatable: no
Technical impact: partial
Assessed: 7 mo ago (2026-03-23)

Exploit prediction

0.32% chance of exploitation in the next 30 days, higher than 25% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

yuque.com https://www.yuque.com/la12138/pa2fpb/vlyutc51eb7vhwaz?singleDoc 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:N/VI:L/VA:L/SC:N/SI:N/SA:N/E:P
CNA	3.1	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CNA	3.0	5.4	CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L/E:P/RL:X/RC:R
CNA	2.0	5.5	AV:N/AC:L/Au:S/C:N/I:P/A:P/E:POC/RL:ND/RC:UR
CNA	4.0	2.1	CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/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	5.4	CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:N/I:L/A:L
CNA	2.0	5.5	AV:N/AC:L/Au:S/C:N/I:P/A:P

Affected products

n/a SSCMS

Classification

Weakness

CWE-22 Improper Limitation of a Pathname to a Restricted Directory

References

yuque.com /la12138/pa2fpb/vlyutc51eb7vhwaz?singleDoc
exploit
vuldb.com /vuln/352359
vdb-entry, technical-description
vuldb.com /vuln/352359/cti
signature, permissions-required
vuldb.com /submit/774689
third-party-advisory

Sources

CVE List CVE-2026-4542
NVD CVE-2026-4542

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