CVE-2024-56140Network attack vector

CSRF bypass via permissive Content-Type matching

Published Dec 18, 2024 · Updated Dec 18, 2024

CSRF in Astro before 4.16.17 allows remote attackers to submit cross-origin requests through the checkOrigin middleware. The middleware compares the entire Content-Type header against exact form-media-type strings and skips its origin check when parameters are appended or the header is absent. Exploitation requires security.checkOrigin to be enabled and a browser user to send the request; the resulting operation executes with that user's application privileges.

CVSS severity5.9
Medium
EPSS probability0.22%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

CSRF in Astro before 4.16.17 allows remote attackers to submit cross-origin requests through the checkOrigin middleware. The middleware compares the entire Content-Type header against exact form-media-type strings and skips its origin check when parameters are appended or the header is absent. Exploitation requires security.checkOrigin to be enabled and a browser user to send the request; the resulting operation executes with that user's application privileges.

The record

CVE
CVE-2024-56140
Published
Dec 18, 2024
Updated
Dec 18, 2024
Vendor
Astro Technology Company
Product
Astro
Classifications
CWE-352, CAPEC-62
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 18, 2024CVE publishedPublication date reported by the CVE source.
  2. Dec 18, 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=< 4.16.17

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Astro Technology Company · Astroversion=< 4.16.17

Published CVSS scores

5.9GitHub, Inc.CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:L/I:H/A:N
6.5NIST NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:H/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 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-352Cross-Site Request Forgery (CSRF)
CAPEC-62Cross Site Request Forgery

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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