CVE Explorer

CVE-2026-54299

Astro is a web framework. Prior to 6.4.6, Astro SSR apps with prerendered error pages (/404 or /500 using export const prerender = true) fetch those pages over HTTP at runtime when an error occurs. The URL for this fetch is derived from request.url, which in turn gets its origin from the incoming Host header. When the Host header is not validated against allowedDomains, an attacker can point the fetch at an arbitrary host and read the response. This vulnerability is fixed in 6.4.6.

Lifecycle PUBLISHED1 preserved revisionFact urn:baitaphish:canonical-cve-fact-revision:v2:34831fda93a4701d9edc95b4f5edbcd0aedca77d2f1589339d064e2cd861fd14

Known exploited

Not asserted

Disputed

Stale source

Conflicts

Preserved source conflicts

No provider value was silently selected as the winner.

cwe · 2 assertions

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/problemTypes/0/descriptions/0

Affected products and versions

1 source assertion

{"product":"astro","vendor":"withastro","versions":[{"status":"affected","version":"< 6.4.6"}]}

cve_program_cvelist_v5affected
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/affected/0

Provider-owned CVSS observations

1 source assertion

{"metric":{"attackComplexity":"HIGH","attackVector":"NETWORK","availabilityImpact":"NONE","baseScore":7.5,"baseSeverity":"HIGH","confidentialityImpact":"HIGH","integrityImpact":"LOW","privilegesRequired":"NONE","scope":"CHANGED","userInteraction":"NONE","vectorString":"CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:C/C:H/I:L/A:N","version":"3.1"},"metric_type":"cvssV3_1"}

cve_program_cvelist_v5cvss
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/metrics/0/cvssV3_1

CWE assertions

2 source assertions

{"cweId":"CWE-918","description":"CWE-918: Server-Side Request Forgery (SSRF)","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/problemTypes/1/descriptions/0

{"cweId":"CWE-20","description":"CWE-20: Improper Input Validation","lang":"en","type":"CWE"}

cve_program_cvelist_v5cwe
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/problemTypes/0/descriptions/0

Source references

1 source assertion

{"name":"https://github.com/withastro/astro/security/advisories/GHSA-2pvr-wf23-7pc7","tags":["x_refsource_CONFIRM"],"url":"https://github.com/withastro/astro/security/advisories/GHSA-2pvr-wf23-7pc7"}

cve_program_cvelist_v5reference
urn:baitaphish:normalized-source-record:v2:d7051e79b5e3d940e1a03012c9370f5228e5819cca0e0aadcfb1cdfc478cbb96 · sha256:f83476a82449eb43… · /containers/cna/references/0

Attribution and limitations

CVE Program CVEList V5: Reproduce the MITRE copyright designation and CVE license in copies. Source →

Provider severity values are preserved separately. Baitaphish does not convert them into a risk rating, infer affected products, or treat EPSS as observed exploitation.

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