CVE-2019-3958 — Insufficient output sanitization in WallacePOS 1.4.3 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks via a crafted sales transaction

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MEDIUM

Insufficient output sanitization in WallacePOS 1.4.3 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks via a crafted sales transaction

Published Jul 31, 2019

5.4

MEDIUM

CVSS 3.0

EPSS 0.85%

Description

Insufficient output sanitization in WallacePOS 1.4.3 allows a remote, authenticated attacker to conduct persistent cross-site scripting (XSS) attacks via a crafted sales transaction.

Affected products

Vendor n/a Product WallacePOS Default
n/a
- Version
  1.4.3
  Status
  affected
  Constraints
  -

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor

Product

Default status

Versions

n/a

WallacePOS

n/a

Version	Status	Constraints
1.4.3	affected	-

Remediation

No remediation recorded yet.

Metrics

0.85% 0.00855

Estimated probability of exploitation in the wild in the next 30 days (FIRST EPSS). As of Oct 2, 2026.

EPSS probability 0.00855

Score over time

2021–2026

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Percentile over time

EPSS v1
EPSS v5
EPSS v2
EPSS v3

Table of values (11 key points)

Flat stretches are collapsed; showing up to 120 newest points.

Date	Score	Percentile	Model
Oct 2, 2026	0.85% (0.00855)	56.86th	v5 (v2026.06.15)
Sep 20, 2026	0.85% (0.00855)	56.76th	v5 (v2026.06.15)
Jul 20, 2024	0.07% (0.00072)	31.59th	v3 (v2023.03.01)
Jun 20, 2024	0.07% (0.00072)	31.24th	v3 (v2023.03.01)
Mar 7, 2023	0.07% (0.00072)	29.19th	v3 (v2023.03.01)
Mar 6, 2023	1.05% (0.01055)	52.13th	v2 (v2022.01.01)
Apr 1, 2022	1.05% (0.01055)	48.43th	v2 (v2022.01.01)
Mar 31, 2022	2.56% (0.02561)	62.63th	v2 (v2022.01.01)
Jan 6, 2022	2.30% (0.02304)	53.25th	v1
Jan 5, 2022	0.52% (0.00523)	33.47th	v5 (v2026.06.15)
Apr 14, 2021	0.52% (0.00523)	0.00th	v1