CVE-2024-21549Public exploitNetwork attack vector

Local file disclosure via nested URL scheme

Published Dec 20, 2024 · Updated Aug 15, 2026

Improper URL validation in Spatie Browsershot before 5.0.3 allows remote attackers to read local files through crafted URLs. The setUrl method denylist rejects direct file schemes but accepts the view-source:file wrapper, which headless Chrome resolves to a local resource. Exploitation requires an application to pass attacker-controlled URLs into Browsershot; successful requests disclose files readable by the rendering process.

CVSS severity8.6
High
EPSS probability0.61%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper URL validation in Spatie Browsershot before 5.0.3 allows remote attackers to read local files through crafted URLs. The setUrl method denylist rejects direct file schemes but accepts the view-source:file wrapper, which headless Chrome resolves to a local resource. Exploitation requires an application to pass attacker-controlled URLs into Browsershot; successful requests disclose files readable by the rendering process.

The record

CVE
CVE-2024-21549
Published
Dec 20, 2024
Updated
Aug 15, 2026
Vendor
Spatie
Product
Browsershot
Classifications
CWE-20, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 20, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 15, 2026Record 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=0 <5.0.3

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Spatie · Browsershotversion=0 <5.0.3

Published CVSS scores

8.6GitLab Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:N/A:N
6.6GitHub Advisory DatabaseCVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:N/SC:H/SI:N/SA:N/E:P

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.

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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
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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