What is CVE-2021-25978?

CVE-2021-25978 is a medium-severity vulnerability in Apostrophe, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-07.

How severe is CVE-2021-25978?

Medium severity. CVSS v3 base score is 5.4 out of 10.

XSS in Apostrophe

CVE-2021-25978

Apostrophe CMS versions between 2.63.0 to 3.3.1 are vulnerable to Stored XSS where an editor uploads an SVG file that contains malicious JavaScript onto the Images module, which triggers XSS once viewed.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.005 (38.9th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 5.4 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:L/I:L/A:N.

Affected products

Apostrophe — versions unspecified, 2.63.0
Apostrophecms

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

References

vulnerabilitylab@mend.io (Patch, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2021-25978?: CVE-2021-25978 is a medium-severity vulnerability in Apostrophe, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2021-11-07.
How severe is CVE-2021-25978?: Medium severity. CVSS v3 base score is 5.4 out of 10.