CVE-2022-43984Public exploitNetwork attack vector

Local file disclosure via externally imported JavaScript

Published Nov 25, 2022 · Updated Dec 3, 2025

Improper input validation in Spatie Browsershot 3.57.3 allows remote attackers to read arbitrary local files through untrusted HTML. Browsershot::html rejects literal file:// text but executes externally imported JavaScript in a local-file page, allowing that script to load file:// URLs. Exploitation requires an application to pass attacker-controlled HTML that loads the script, after which local file contents can enter the rendered output.

CVSS severity6.1
Medium
EPSS probability0.62%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper input validation in Spatie Browsershot 3.57.3 allows remote attackers to read arbitrary local files through untrusted HTML. Browsershot::html rejects literal file:// text but executes externally imported JavaScript in a local-file page, allowing that script to load file:// URLs. Exploitation requires an application to pass attacker-controlled HTML that loads the script, after which local file contents can enter the rendered output.

The record

CVE
CVE-2022-43984
Published
Nov 25, 2022
Updated
Dec 3, 2025
Vendor
Spatie
Product
Browsershot
Classifications
CWE-20, CWE-79, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Nov 25, 2022CVE publishedPublication date reported by the CVE source.
  2. Dec 3, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=3.57.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spatie · Browsershotversion=3.57.3

Published CVSS scores

7.5Fluid AttacksCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
6.1GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-20Improper Input Validation
CWE-79Improper Neutralization of Input During Web Page Generation ('Cross-site Scripting')
T1005Data from Local System

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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