CVE-2026-73191: Apache Syncope · Open Redirect
Affects syncope-coreSource GCVE Database
Not known to be exploited · CVSS 6.1 Medium · fixed in 4.0.8 : update syncope-core when convenient.
Data as of 30 Oct 2026, 11:52 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 23% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
- Patch
- Available – fixed in 4.0.8
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:NExploitation evidence
Disclosed: evidence found.
CVE published 14 Sep 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 30 Oct 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
Mavenorg.apache.syncope/syncope-corepkg:maven/org.apache.syncope/syncope-coreOther threats | Affected
| Fixed in– |
Check your own hosts for these packages with threat-finder (opens in a new tab), our free open-source scanner.
AI-suggested
Users should upgrade Apache Syncope to versions 4.0.8 or 4.1.3, which contain fixes for this vulnerability. No other mitigation or temporary workaround is indicated in the provided data. Patch status is confirmed by the vendor advisory information.
Description
Apache Syncope versions from 3.0.0-M0 through 3.0.16, 4.0.0-M0 through 4.0.7, and 4.1.0-M0 through 4.1.2 contain an Open Redirect vulnerability when configured for CAS authentication. The vulnerability arises because the target Apereo CAS instance URL is determined by untrusted client-supplied forwarded HTTP headers. This can lead to URL redirection to untrusted sites. Fixed versions 4.0.8 and 4.1.3 address this issue.