Astro is a web framework for content-driven websites. In versions 8.1.0 through 11.0.1, when trailingSlash: 'always' is configured, the @astrojs/node standalone server's static file handler appends a trailing slash to request paths and issues a 301 redirect. Paths beginning with /\ (slash-backslash) were not recognized as internal paths, so the handler would echo the raw path back in the Location header. Because browsers treat \ as / per the WHATWG URL specification, the resulting redirect could resolve to an external host. Preconditions for exploitation: trailingSlash: 'always' must be set (non-default; the default is 'ignore'), the request path must not have a file extension in its final segment, and an attacker must deliver the crafted link to a user. This issue has been fixed in version 11.0.2.
CVE-2026-59730
This low-severity CVE scores 2.1 under a secondary CVSS source (NVD's own analysis pending). EPSS exploit probability: 0.4%, top 71% of all CVEs by exploit prediction. GitHub Security Advisory data not yet ingested — confidence will rise once GHSA publishes (typical lag: hours to days for open-source ecosystem CVEs; never for infrastructure-only CVEs).
- Lower severity and no public exploit yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 2.1
- EG Score
- 2.1(medium)
- EG Risk
- 10(Track)EG Risk 10/100SSVC: Track
EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).
How it’s computedSeverity21% × 45%Exploitation0% × 40%Automatability0% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 0%
- EPSS %ILE
- 29%
- KEV
- Not listed
Published
July 20, 2026
Last Modified
July 28, 2026
References (4)
- security-advisories@githubhttps://github.com/withastro/astro/commit/eb6f97e391ee587747e37609c255c7cd4b9cce3c
- security-advisories@githubhttps://github.com/withastro/astro/pull/17252
- security-advisories@githubhttps://github.com/withastro/astro/releases/tag/@astrojs/[email protected]
- security-advisories@githubhttps://github.com/withastro/astro/security/advisories/GHSA-r557-wffq-wvrc
Vendor Advisories for CVE-2026-59730(1)
These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.
Affected Packages
(1 across 1 ecosystem)
npm(1)
| Package | Vulnerable range | Fixed in | Dependents |
|---|---|---|---|
| @astrojs/node | — | 11.0.2 | — |
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 34× in last 30d)
Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.
- 2026-09-11 14:53 UTCEPSS rescore
- 2026-09-10 09:35 UTCEPSS rescore
- 2026-09-09 11:45 UTCEG score recompute
- 2026-09-08 22:01 UTCEPSS rescore
- 2026-09-07 16:01 UTCEPSS rescore
- 2026-09-06 13:47 UTCEPSS rescore
- 2026-09-05 09:19 UTCEG score recompute
- 2026-09-04 05:07 UTCEPSS rescore
- 2026-09-02 14:12 UTCEPSS rescore
- 2026-09-02 01:01 UTCEG score recompute
- 2026-09-01 13:54 UTCEPSS rescore
- 2026-09-01 04:40 UTCEPSS rescore
- 2026-08-30 19:17 UTCEPSS rescore
- 2026-08-30 02:27 UTCEG score recompute
- 2026-08-30 01:22 UTCEPSS rescore
- 2026-08-28 21:42 UTCEPSS rescore
- 2026-08-27 14:25 UTCEPSS rescore
- 2026-08-26 14:46 UTCEPSS rescore
- 2026-08-26 00:48 UTCEG score recompute
- 2026-08-25 13:49 UTCEPSS rescore
- 2026-08-23 04:22 UTCEG score recompute
- 2026-08-23 00:19 UTCEPSS rescore
- 2026-08-21 23:49 UTCEPSS rescore
- 2026-08-20 22:55 UTCEPSS rescore
- 2026-08-20 08:23 UTCEG score recompute
Show 37 moreShow fewer
- 2026-08-19 17:04 UTCEPSS rescore
- 2026-08-18 13:48 UTCEPSS rescore
- 2026-08-17 13:47 UTCEPSS rescore
- 2026-08-17 12:24 UTCEG score recompute
- 2026-08-16 14:56 UTCEPSS rescore
- 2026-08-16 02:14 UTCEPSS rescore
- 2026-08-15 01:30 UTCEPSS rescore
- 2026-08-14 16:24 UTCEG score recompute
- 2026-08-13 22:00 UTCEPSS rescore
- 2026-08-12 13:51 UTCEPSS rescore
- 2026-08-11 20:26 UTCEG score recompute
- 2026-08-11 00:00 UTCEPSS rescore
- 2026-08-09 13:46 UTCEPSS rescore
- 2026-08-09 00:28 UTCEG score recompute
- 2026-08-08 16:37 UTCEPSS rescore
- 2026-08-06 13:47 UTCEPSS rescore
- 2026-08-06 04:29 UTCEG score recompute
- 2026-08-05 19:17 UTCEPSS rescore
- 2026-08-04 15:10 UTCEPSS rescore
- 2026-08-04 10:39 UTCEPSS rescore
- 2026-08-03 10:36 UTCEPSS rescore
- 2026-08-03 08:31 UTCEG score recompute
- 2026-08-02 02:27 UTCEPSS rescore
- 2026-08-01 04:16 UTCEPSS rescore
- 2026-07-31 12:32 UTCEG score recompute
- 2026-07-30 16:28 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-30 01:30 UTCEPSS rescore
- 2026-07-28 15:46 UTCEG score recompute
- 2026-07-28 15:37 UTCEPSS rescore
- 2026-07-28 14:42 UTCEG score recompute
- 2026-07-27 21:39 UTCEG score recompute
- 2026-07-27 20:34 UTCEG score recompute▲ 2.10
- 2026-07-27 20:24 UTCMITRE cvelistV5CVSS v3 → 2.1 · CVSS v4 → 2.1
- 2026-07-26 10:45 UTCEG score recompute
- 2026-07-23 03:21 UTCEG score recompute
- 2026-07-20 23:33 UTCEG score recompute
Frequently asked(5)
What is CVE-2026-59730?
When was CVE-2026-59730 disclosed?
Is CVE-2026-59730 actively exploited?
What is the CVSS score of CVE-2026-59730?
How do I remediate CVE-2026-59730?
Dependency Blast Radius
See which npm, PyPI, Go, and Maven packages are affected by CVE-2026-59730
Is Your Infrastructure Affected by CVE-2026-59730?
EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.