CVE-2025-50180
CVE-2025-50180 is a high-severity vulnerability in Esm Esm.sh with a CVSS 3.x base score of 7.5. 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-918.
Key facts
- Severity: High (CVSS 3.x base score 7.5)
- CVSS v4: 8.7
- EPSS exploit prediction: 0% (30th percentile)
- Actively exploited: Not listed in CISA KEV
- EU (EUVD) id: EUVD-2025-208114
- Weakness: CWE-918
- Affected product: Esm Esm.sh
- Published:
- Last modified:
Description
esm.sh is a no-build content delivery network (CDN) for web development. In version 136, esm.sh is vulnerable to a full-response SSRF, allowing an attacker to retrieve information from internal websites through the vulnerability. Version 137 fixes the vulnerability.
Frequently asked questions
- What is CVE-2025-50180?
- esm.sh is a no-build content delivery network (CDN) for web development. In version 136, esm.sh is vulnerable to a full-response SSRF, allowing an attacker to retrieve information from internal websites through the vulnerability. Version 137 fixes the vulnerability.
- How severe is CVE-2025-50180?
- CVE-2025-50180 has a CVSS 3.x base score of 7.5, rated high severity. It is exploitable over network with low attack complexity, requires no privileges and no user interaction. Impact on confidentiality is high, integrity none, and availability none.
- Is CVE-2025-50180 being actively exploited?
- It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 0% (30th percentile), an estimate of the probability of exploitation in the next 30 days.
- What products are affected by CVE-2025-50180?
- CVE-2025-50180 affects Esm Esm.sh. See the affected-products list for the exact vulnerable versions.
- How do I fix CVE-2025-50180?
- Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
- Does CVE-2025-50180 have an EU (EUVD) identifier?
- Yes. CVE-2025-50180 is tracked in the ENISA EU Vulnerability Database (EUVD) as EUVD-2025-208114.
- When was CVE-2025-50180 published?
- CVE-2025-50180 was published on 2026-02-25 and last updated on 2026-06-17.
References
- https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/internal/fetch/fetch.go#L13
- https://github.com/esm-dev/esm.sh/blob/f80ff8c8d58749e77fa964abde468fc61f8bd89e/server/router.go#L511
- https://github.com/esm-dev/esm.sh/commit/0593516c4cfab49ad3b4900416a8432ff2e23eb0
- https://github.com/esm-dev/esm.sh/pull/1149
- https://github.com/esm-dev/esm.sh/releases/tag/v137
- https://github.com/esm-dev/esm.sh/security/advisories/GHSA-3c9r-837r-qqm4
Affected products (1)
- cpe:2.3:a:esm:esm.sh:*:*:*:*:*:*:*:*
More vulnerabilities in Esm Esm.sh
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