XSS in Mitreid Connect

CVE-2020-5497

The OpenID Connect reference implementation for MITREid Connect through 1.3.3 allows XSS due to userInfoJson being included in the page unsanitized. This is related to header.tag. The issue can be exploited to execute arbitrary JavaScript.

Vulnerability class: XSS (Cross-Site Scripting)

EPSS: 0.021 (80.1th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 6.1 (Medium). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N.

Affected products

Weakness classification (CWE)

Public proof-of-concept exploits

References

  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC, Issue Tracking)
  • cve@mitre.org (Exploit, Third Party Advisory, x_refsource_MISC)
  • cve@mitre.org (mailing-list, x_refsource_FULLDISC, Mailing List, Third Party Advisory)
  • cve@mitre.org (Exploit, VDB Entry, Third Party Advisory, x_refsource_MISC)

Frequently asked questions

What is CVE-2020-5497?
CVE-2020-5497 is a medium-severity vulnerability in Mitreid Connect, classified under Cross-site Scripting. CVSS score: 6.1/10. Published 2020-01-04.
How severe is CVE-2020-5497?
Medium severity. CVSS v3 base score is 6.1 out of 10.
Is CVE-2020-5497 known to be exploited?
3 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.