Description
A vulnerability in ipsilon 2.0 before 2.0.2, 1.2 before 1.2.1, 1.1 before 1.1.2, and 1.0 before 1.0.3 was found that allows attacker to log out active sessions of other users. This issue is related to how it tracks sessions, and allows an unauthenticated attacker to view and terminate active sessions from other users. It is also called a "SAML2 multi-session vulnerability."
Fixed in Linux distributions
Distributions backport fixes, so the version that fixes this vulnerability differs per release — upgrade to at least the version shown. From the distributions' security trackers and advisories.
Red Hat
Security tracker ↗| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| RHEL 7 | ipsilon +11 | 1.0.0-13.el7_3 | RHSA-2016:2809 |
Oracle Linux
| Release | Package | Fixed in | Advisory |
|---|---|---|---|
| Oracle Linux 7 | ipsilon +11 | 1.0.0-13.el7_3 | ELSA-2016-2809 |
Affected packages
| Ecosystem | Package | Affected | Fixed | Record |
|---|---|---|---|---|
| PyPI | ipsilon | >= 2.0.0, < 2.0.2 | 2.0.2 | GHSA-376m-3rm2-9jm6 |
| PyPI | ipsilon | >= 1.2.0, < 1.2.1 | 1.2.1 | GHSA-376m-3rm2-9jm6 |
| PyPI | ipsilon | >= 1.1.0, < 1.1.2 | 1.1.2 | GHSA-376m-3rm2-9jm6 |
| PyPI | ipsilon | >= 1.0.0, < 1.0.3 | 1.0.3 | GHSA-376m-3rm2-9jm6 |
| PyPI | ipsilon | >= 1.0.0, < 1.0.3 · >= 1.1.0, < 1.1.2 · >= 2.0.0, < 2.0.2 · >= 1.2.0, < 1.2.1 | 1.0.3, 1.1.2, 2.0.2, 1.2.1 | PYSEC-2026-360 |
Advisories 2
- RHSA-2016:2809 Red Hat Security Advisory: ipsilon security update Red Hat Security Advisories (RHSA) · May 13, 2026
- ELSA-2016-2809 Important: ipsilon security update (Oracle Linux 7) Oracle Linux Security Advisories (ELSA) · Nov 21, 2016