CVE-2026-54300Public exploitNetwork attack vector

Unauthenticated SSRF via broadened image allowlist regexes

Published Jun 22, 2026 · Updated Jun 22, 2026

SSRF in Astro @astrojs/netlify before 7.0.13 allows remote attackers to fetch image-like resources from unintended hosts or paths. The adapter emits optional-subdomain and unanchored-path regular expressions into Netlify images.remote_images, widening configured matches. Exposure requires a deployed app with restrictive image.remotePatterns; public Image CDN requests can read only image-like resources reachable through the broadened host or path boundary.

CVSS severity5.3
Medium
EPSS probability0.31%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

SSRF in Astro @astrojs/netlify before 7.0.13 allows remote attackers to fetch image-like resources from unintended hosts or paths. The adapter emits optional-subdomain and unanchored-path regular expressions into Netlify images.remote_images, widening configured matches. Exposure requires a deployed app with restrictive image.remotePatterns; public Image CDN requests can read only image-like resources reachable through the broadened host or path boundary.

The record

CVE
CVE-2026-54300
Published
Jun 22, 2026
Updated
Jun 22, 2026
Vendor
Astro
Product
Astro
Classifications
CWE-918, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 22, 2026CVE publishedPublication date reported by the CVE source.
  2. Jun 22, 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=< 7.0.13

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Astro · Astroversion=< 7.0.13

Published CVSS scores

5.3GitHub, Inc.CVSS: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 exploitPublished

Weakness, pattern, technique

CWE-918Server-Side Request Forgery (SSRF)
T1190Exploit Public-Facing Application

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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