Machine-written summary
Summary written by Claude Haiku from the source advisory. Not reviewed by a person.
Apache Syncope's client-idrepo-common-ui package is vulnerable to reflected cross-site scripting on the Enduser Login page in versions 3.0.0 through 3.0.15 and 4.0.0 through 4.0.3. An attacker who tricks a user into clicking a malicious link and logging in to Syncope Enduser could steal that user's credentials. Users should upgrade to version 3.0.16 or 4.0.4.
Not analysed yet
We haven’t published our analysis of this Advisory yet. Once a person has reviewed it, this page will say what’s vulnerable, what has to be true for your app to be affected, and how to check.
Severity and exploitation
| Score | Rating | CVSS | Vector | Source |
|---|---|---|---|---|
| 6.8 | Medium | 3.1 | CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:C/C:H/I:N/A:N | GitHub Advisory Database |
- CISA KEV Not listed.
- EPSS 0.0052, the 44th percentile, on 12 Nov 2026: FIRST’s estimate of the chance of exploitation in the next 30 days.
Timeline
- 31 Oct 2026, 15:09 UTC First seen by agentprime
- 31 Oct 2026, 15:09 UTC Confirmed by OSV