CVE-2011-1411

Improper Authentication in OpenSAML

5.8 MediumFix available

Shibboleth OpenSAML library 2.4.x before 2.4.3 and 2.5.x before 2.5.1, and IdP before 2.3.2, allows remote attackers to forge messages and bypass authentication via an "XML Signature wrapping attack."

Exploit likelihood

2.29%Up 1.1 points since Feb 4, 2022

What each source reports

NVD Score used 5.8

Record: CVE-2011-1411
CVSS 2.0: 5.8 MediumAV:N/AC:M/Au:N/C:P/I:P/A:N
Weakness: CWE-287
Updated: 2026-11-02

CVE List No score

Record: CVE-2011-1411
Updated: 2026-11-02

EUVDEUVD-2022-5052 No score

Record: EUVD-2022-5052
Updated: 2026-11-03

GitHub AdvisoriesGHSA-qwwj-qj3f-9hv7 No score

Improper Authentication in OpenSAML

Record: GHSA-qwwj-qj3f-9hv7
Weakness: CWE-287
Updated: 2026-11-02

OSVGHSA-qwwj-qj3f-9hv7 No score

Improper Authentication in OpenSAML

Record: GHSA-qwwj-qj3f-9hv7
Weakness: CWE-287
Updated: 2026-11-02

Affected products

Affected packages

Affected packages
Package	Affected	Fixed
`org.opensaml:opensaml` Maven	2.4.0 up to 2.4.3	2.4.3
`org.opensaml:opensaml` Maven	2.5.0 up to 2.5.1	2.5.1
`opensaml2` Debian:6.0	before 2.3-2+squeeze1, plus listed versions 2.3-22.3-2+squeeze1~bpo50+1	2.3-2+squeeze1
`opensaml2` Debian:5.0	before 2.0-2+lenny3, plus listed versions 2.0-22.0-2+lenny12.0-2+lenny2	2.0-2+lenny3
`org.opensaml:opensaml` Maven	2.4.0 up to 2.4.3, plus listed versions 2.4.1	2.4.3

History

History
Recorded	Changed	Sources
Nov 3, 2026	aliases	EUVD
Nov 2, 2026	first indexed	CVE List, GitHub Advisories, NVD, OSV

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2011-1411 is a medium vulnerability (CVSS 5.8) in Shibboleth Opensaml, published July 25, 2011. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 2.29%, the 83rd percentile. Fixed in org.opensaml:opensaml 2.4.3.