What is CVE-2021-39497?

CVE-2021-39497 is a critical-severity vulnerability in Eyoucms, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2021-09-07.

How severe is CVE-2021-39497?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Is CVE-2021-39497 known to be exploited?

2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.

SSRF in Eyoucms

CVE-2021-39497

eyoucms 1.5.4 lacks sanitization of input data, allowing an attacker to inject a url to trigger blind SSRF via the saveRemote() function.

Vulnerability class: SSRF (Server-Side Request Forgery)

EPSS: 0.024 (82.0th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

Affected products

Eyoucms — versions 1.5.4
N/a — versions n/a

Weakness classification (CWE)

CWE-918 — Server-Side Request Forgery (SSRF)

Public proof-of-concept exploits

References

cve@mitre.org (Third Party Advisory, x_refsource_MISC)
cve@mitre.org (x_refsource_MISC, Broken Link)
cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-39497?: CVE-2021-39497 is a critical-severity vulnerability in Eyoucms, classified under Server-Side Request Forgery (SSRF). CVSS score: 9.8/10. Published 2021-09-07.
How severe is CVE-2021-39497?: Critical severity. CVSS v3 base score is 9.8 out of 10.
Is CVE-2021-39497 known to be exploited?: 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.