How severe is CVE-2026-33769?

CVE-2026-33769 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.

Is CVE-2026-33769 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2026-33769?

CVE-2026-33769 affects Astro. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2026-33769?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

Does CVE-2026-33769 have an EU (EUVD) identifier?

Yes. CVE-2026-33769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14984.

When was CVE-2026-33769 published?

CVE-2026-33769 was published on 2026-03-24 and last updated on 2026-06-17.

CVE-2026-33769

CVE-2026-33769 is a medium-severity vulnerability in Astro with a CVSS 3.x base score of 5.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-20.

Key facts

Severity: Medium (CVSS 3.x base score 5.3)
CVSS v4: 2.9
EPSS exploit prediction: 0% (24th percentile)
Actively exploited: Not listed in CISA KEV
EU (EUVD) id: EUVD-2026-14984
Weakness: CWE-20
Affected product: Astro
Published: 2026-03-24
Last modified: 2026-06-17

Description

Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers such as the image optimization endpoint. The path matching logic for /* wildcards is unanchored, so a pathname that contains the allowed prefix later in the path can still match. As a result, an attacker can fetch paths outside the intended allowlisted prefix on an otherwise allowed host. This issue has been patched in version 5.18.1.

Frequently asked questions

What is CVE-2026-33769?: Astro is a web framework. From version 2.10.10 to before version 5.18.1, this issue concerns Astro's remotePatterns path enforcement for remote URLs used by server-side fetchers such as the image optimization endpoint. The path matching logic for /* wildcards is unanchored, so a pathname that contains the allowed prefix later in the path can still match. As a result, an attacker can fetch paths outside the intended allowlisted prefix on an otherwise allowed host. This issue has been patched in version 5.18.1.
How severe is CVE-2026-33769?: CVE-2026-33769 has a CVSS 3.x base score of 5.3, rated medium severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is low, integrity none, and availability none.
Is CVE-2026-33769 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (24th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2026-33769?: CVE-2026-33769 affects Astro. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2026-33769?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
Does CVE-2026-33769 have an EU (EUVD) identifier?: Yes. CVE-2026-33769 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2026-14984.
When was CVE-2026-33769 published?: CVE-2026-33769 was published on 2026-03-24 and last updated on 2026-06-17.

References

https://github.com/withastro/astro/security/advisories/GHSA-g735-7g2w-hh3f

Affected products (1)

cpe:2.3:a:astro:astro:*:*:*:*:*:node.js:*:*

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