CVE-2024-31207Public exploitNetwork attack vector

Blocked-file disclosure via basename-only deny matching

Published Apr 4, 2024 · Updated Aug 2, 2024

Improper access control in affected Vite dev server releases allows remote attackers to read files blocked by server.fs.deny. The server compiles directory-containing deny patterns with picomatch matchBase enabled, which checks only basenames instead of full paths. Exploitation requires a custom directory deny pattern and a dev server explicitly exposed through the host option; impact is limited to reading reachable files covered by that rule.

CVSS severity5.9
Medium
EPSS probability0.71%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Improper access control in affected Vite dev server releases allows remote attackers to read files blocked by server.fs.deny. The server compiles directory-containing deny patterns with picomatch matchBase enabled, which checks only basenames instead of full paths. Exploitation requires a custom directory deny pattern and a dev server explicitly exposed through the host option; impact is limited to reading reachable files covered by that rule.

The record

CVE
CVE-2024-31207
Published
Apr 4, 2024
Updated
Aug 2, 2024
Vendor
Vite
Product
Vite
Classifications
CWE-284, CWE-200, T1005
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Apr 4, 2024CVE publishedPublication date reported by the CVE source.
  2. Aug 2, 2024Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

Compare your product and version with the public record. A matching version still requires validation against your environment.

Is a vulnerable build present?

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

  1. Affected versionversion=>= 2.7.0, <= 2.9.17
  2. Affected versionversion=>= 3.0.0, <= 3.2.8
  3. Affected versionversion=>= 4.0.0, <= 4.5.2
  4. Affected versionversion=>= 5.0.0, <= 5.0.12
  5. Affected versionversion=>= 5.1.0, <= 5.1.6
  6. Affected versionversion=>= 5.2.0, <= 5.2.5

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Vite · Viteversion=>= 2.7.0, <= 2.9.17; version=>= 3.0.0, <= 3.2.8; version=>= 4.0.0, <= 4.5.2; version=>= 5.0.0, <= 5.0.12; version=>= 5.1.0, <= 5.1.6; version=>= 5.2.0, <= 5.2.5

Published CVSS scores

5.9GitHubCVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/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.

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-284Improper Access Control
CWE-200Exposure of Sensitive Information to an Unauthorized Actor
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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