CVE-2018-20962

Exp

The Backpack\CRUD Backpack component before 3.4.9 for Laravel allows XSS via the select field type.

Published: 2019-08-08 Last update: 2026-06-16 Assigner: [email protected] Source: [email protected]

NVD Status：Modified，CVE State: published

View at NVD, CVE.org, EUVD

Threat Intelligence & Risk Assessment for CVE-2018-20962

EPSS CVSS CWE GHSA Exploit-DB Affected

Conclusion & alert: CVE-2018-20962 is rated High Exploit Risk (63.8/100): CVSS Medium severity, with medium exploitation likelihood (EPSS 1.31%). Core evidence: 1 public exploit reference(s) are indexed (Exploit-DB). EPSS rose +1.00% over the last day, indicating growing attacker interest. Mandatory action: Public exploits are available—assess exposure, apply mitigations, and prioritize patching.

Risk is dynamic; we continuously reassess and refresh what is shown on this page as upstream context changes.

Public exploit references (Exploit-DB) for CVE-2018-20962

EDB-ID	Source	Kind	Published	Link
—	nvd_ref	exploit_tag		Exploit-DB ↗

Exploit prediction scoring system (EPSS) score for CVE-2018-20962

EPSS lead: Daily EPSS estimates relative likelihood of exploitation; percentile ranks this CVE among scored vulnerabilities (higher = more severe relative rank).

#	Date	Old EPSS score	New EPSS score	Delta (New - Old)
1	2026-06-15	0.31%	1.31%	+1.00%
2	2025-03-17	0.11%	0.31%	+0.19%
3	2023-03-07	—	0.11%	—

Full EPSS history (4 records total)

Common vulnerability scoring system (CVSS) metrics for CVE-2018-20962

CVSS metrics for this CVE.

Base score	Version	Severity	Vector	Exploitability	Impact	Score source
6.1	3.0	MEDIUM	`CVSS:3.0/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N` Click to expand Attack vector (AV:N) Could be attacked over the internet or any normal routed network—not just someone sitting at the machine. Attack complexity (AC:L) Once they can reach the bug, pulling it off is straightforward—no weird race conditions or rare setup. Privileges required (PR:N) No account or special rights needed—anonymous or random user is enough. User interaction (UI:R) A real person has to do something—click, install, enable—otherwise it doesn’t land. Scope (S:C) Breaking this can reach past the original component and bite other resources—bigger blast radius. Confidentiality (C:L) Some sensitive info could get out, but not a total data dump. Integrity (I:L) Attackers could change some data, but it’s limited—not everything goes. Availability (A:N) Service keeps running; no real outage angle.	2.8	2.7	[email protected]
4.3	2.0	MEDIUM	`AV:N/AC:M/Au:N/C:N/I:P/A:N` Click to expand Access vector (AV:N) Can be exploited remotely over network reachability. Access complexity (AC:M) Exploitation needs some favorable conditions, but not exceptional ones. Authentication (AU:N) No authentication is required. Confidentiality impact (C:N) No confidentiality impact. Integrity impact (I:P) Partial integrity impact. Availability impact (A:N) No availability impact.	8.6	2.9	[email protected]

Weakness enumeration for CVE-2018-20962

CWE-79 MITRE ↗

GitHub Security Advisory for CVE-2018-20962

GHSA-6gfm-gpr3-8wh9 · Severity: medium · Ecosystem: composer — Backpack\CRUD for Laravel XSS Vulnerability

Affected software / configurations for CVE-2018-20962

Vendor	Product	Version	Raw CPE
backpackforlaravel	backpack\\crud	< 3.4.9	cpe:2.3:a:backpackforlaravel:backpack\\crud::::::::

References for CVE-2018-20962

URL	Tags
https://github.com/Laravel-Backpack/CRUD/blob/master/CHANGELOG.md	Release Notes Third Party Advisory
https://github.com/Laravel-Backpack/CRUD/commit/8b6bd0a2d489a4690f6b1d7ace67e2f07f5f0cc6	Patch Third Party Advisory
https://github.com/Laravel-Backpack/CRUD/compare/3.4.8...3.4.9	Patch Third Party Advisory
https://github.com/Laravel-Backpack/CRUD/issues/1297	Exploit Issue Tracking Third Party Advisory

cvelogic Threat Intelligence