XSS in Rcos Submitty

CVE-2020-12882

Submitty through 20.04.01 allows XSS via upload of an SVG document, as demonstrated by an attack by a Student against a Teaching Fellow.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.012 (65.1th 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

Rcos Submitty
N/a — versions n/a

Weakness classification (CWE)

CWE-79 — Cross-site Scripting

Public proof-of-concept exploits

ARPSyndicate/cvemon

References

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

Frequently asked questions

What is CVE-2020-12882?: CVE-2020-12882 is a medium-severity vulnerability in Rcos Submitty, classified under Cross-site Scripting. CVSS score: 5.4/10. Published 2020-05-15.
How severe is CVE-2020-12882?: Medium severity. CVSS v3 base score is 5.4 out of 10.
Is CVE-2020-12882 known to be exploited?: 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.