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CVE-2026-73178

Apache Syncope: JWT Access Token takeover

Published: Sep 14, 2026Updated: Sep 14, 2026 Sources: CVE List NVDCWE-200
7.5HIGH
NVD MITRE
EPSS Score
0.4%
Top 64.7%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
No Fix Available
Self-Check
Not available

Description

Exposure of Sensitive Information to an Unauthorized Actor vulnerability in Apache Syncope. An administrator with adequate entitlements can get access via REST to the list of existing Access Tokens, including their signed JWT body. These values can be then used to perform further REST requests, impersonating users with higher administration entitlements. This issue affects Apache Syncope: from 3.0.0-M0 through 3.0.16, from 4.0.0-M0 Through 4.0.7, from 4.1.0-M0 through 4.1.2. Users are recommended to upgrade to version 4.0.8 / 4.1.3, which fix this issue.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
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Weaknesses

CWE-200

Affected Products

Apache Software Foundation
oss-project·USaka apache foundation
Apache SyncopeOn-prem
Enterprise Software

Exploitability

No known exploits, KEV entries, or remediation guidance available for this vulnerability yet.
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

1 technique
Collection
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References

https://lists.apache.org/thread/owcdm0stb39mnkpyps0h6yw4gp2olnkj
lists.apache.org
http://www.openwall.com/lists/oss-security/2026/09/14/4
openwall.com

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