TI-2020-17017 Aliases CVE-2020-27978 GHSA-x3qc-wj2q-xv5h

Shibboleth Identify Provider 3.x before 3.4.6 has a denial of service flaw.

LOW 37CWE-770Published 2020-10-28 · Updated 2024-08-04

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · High
Fix status: No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-770.

Summary

Shibboleth Identify Provider 3.x before 3.4.6 has a denial of service flaw. A remote unauthenticated attacker can cause a login flow to trigger Java heap exhaustion due to the creation of objects in the Java Servlet container session.

Why it matters now

EPSS 0.01855 79th percentileScored 2026-11-07

Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
—	—	all versions	—	No fix listed	CNA

— Vendor— Affected all versions Fixed in — No fix listed CNA

CPE configurations NVD · 1

CPE	Versions	Role	Vendor
cpe:2.3:a:shibboleth:identity_provider::::::::	3.0.0 to before 3.4.6	Vulnerable	Shibboleth

cpe:2.3:a:shibboleth:identity_provider:*:*:*:*:*:*:*:* Versions 3.0.0 to before 3.4.6 Vulnerable ·Shibboleth

Remediation

No fixed version listed by the sources yet.

Timeline

2026-10-02 Threatist record created from CVE-2020-27978
2026-10-03 Alias added: GHSA-x3qc-wj2q-xv5h

References

Advisory 1

https://shibboleth.net/community/advisories/secadv_20191002.txt

TI-2014-02926 The (1) HttpResource and (2) FileBackedHttpResource implementations in Shibboleth… CVSS 3.0MEDIUM 5.9
TI-2015-01614 The PKIX trust engines in Shibboleth Identity Provider before 2.4.4 and OpenSAML Java… CVSS 2.0MEDIUM 4.3

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences