Resource exhaustion in Astro \@Astrojs\/node
CVE-2026-27729
Astro is a web framework. In versions 9.0.0 through 9.5.3, Astro server actions have no default request body size limit, which can lead to memory exhaustion DoS. A single large POST to a valid action endpoint can crash the server process o…
EPSS: 0.004 (33.8th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 5.9 (Medium). Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:N/I:N/A:H.
Affected products
- Astro \@Astrojs\/node
- Withastro Astro — versions >= 9.0.0, < 9.5.4
Weakness classification (CWE)
References
- security-advisories@github.com (x_refsource_CONFIRM, Exploit, Third Party Advisory)
- security-advisories@github.com (x_refsource_MISC, Issue Tracking)
- security-advisories@github.com (Patch, x_refsource_MISC)
- security-advisories@github.com (Product, x_refsource_MISC, Release Notes)
Frequently asked questions
- What is CVE-2026-27729?
- CVE-2026-27729 is a medium-severity vulnerability in Astro \@Astrojs\/node, classified under Allocation of Resources Without Limits or Throttling. CVSS score: 5.9/10. Published 2026-02-24.
- How severe is CVE-2026-27729?
- Medium severity. CVSS v3 base score is 5.9 out of 10.