CVE-2022-2400Network attack vector

Local image disclosure via chroot check bypass

Published Jul 18, 2022 · Updated Aug 3, 2024

Path validation bypass in dompdf before 2.0.0 allows remote attackers to read local PNG and JPEG files through crafted HTML. A document with an HTTP(S) base href causes local image references to skip the configured chroot path check. Reachability requires an application to render attacker-controlled HTML; disclosure is limited to readable PNG or JPEG content embedded in the PDF.

CVSS severity5.3
Medium
EPSS probability1.15%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Path validation bypass in dompdf before 2.0.0 allows remote attackers to read local PNG and JPEG files through crafted HTML. A document with an HTTP(S) base href causes local image references to skip the configured chroot path check. Reachability requires an application to render attacker-controlled HTML; disclosure is limited to readable PNG or JPEG content embedded in the PDF.

The record

CVE
CVE-2022-2400
Published
Jul 18, 2022
Updated
Aug 3, 2024
Vendor
dompdf
Product
dompdf
Classifications
CWE-73, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 18, 2022CVE publishedPublication date reported by the CVE source.
  2. Aug 3, 2024Record 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=unspecified <2.0.0

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

dompdf · dompdfversion=unspecified <2.0.0

Published CVSS scores

5.3GitHub Advisory DatabaseCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/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.

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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 exploitUnconfirmed

Weakness, pattern, technique

CWE-73External Control of File Name or Path
T1005Data from Local System

Public exploit references

No public exploit references are available in this record.

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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