CVE-2026-59730Network attack vectorHinoki check available

Open redirect via backslash-prefixed request paths

Published Jul 27, 2026 · Updated Jul 27, 2026

Open redirect in Astro 8.1.0 through 11.0.1 allows remote attackers to redirect users externally via crafted request paths. The @astrojs/node static file handler misclassifies slash-backslash paths in isInternalPath and echoes the raw path into a 301 Location header. Exploitation requires non-default trailingSlash behavior, a final segment without a file extension, and user interaction with the crafted link.

CVSS severity2.1
Low
EPSS probability0.36%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkAvailable
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Summary

What happened

Open redirect in Astro 8.1.0 through 11.0.1 allows remote attackers to redirect users externally via crafted request paths. The @astrojs/node static file handler misclassifies slash-backslash paths in isInternalPath and echoes the raw path into a 301 Location header. Exploitation requires non-default trailingSlash behavior, a final segment without a file extension, and user interaction with the crafted link.

The record

CVE
CVE-2026-59730
Published
Jul 27, 2026
Updated
Jul 27, 2026
Vendor
Astro
Product
Astro
Classifications
CWE-601, T1204.001
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jul 27, 2026CVE publishedPublication date reported by the CVE source.
  2. Jul 27, 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=>= 8.1.0, < 11.0.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Astro · Astroversion=>= 8.1.0, < 11.0.2

Published CVSS scores

2.1GitHub, Inc.CVSS:4.0/AV:N/AC:H/AT:N/PR:N/UI:A/VC:N/VI:N/VA:N/SC:N/SI:L/SA: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 exploitUnconfirmed

Weakness, pattern, technique

CWE-601URL Redirection to Untrusted Site ('Open Redirect')
T1204.001User Execution: Malicious Link

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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