synced 1 MIN AGO
01 Record

CVE-2026-87785

Apache Syncope: JWT subject spoofing

CriticalPUBLISHEDCNA: apache
CNA base score9.1 CVSS v3.xCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N

02 Description

Apache Syncope: JWT subject spoofing

03 Exploitation and scoring

Exploitation
Assessed, none found. CISA's assessment recorded neither public exploit code nor evidence of exploitation when it was made.
SSVC decision
  • ExploitationnoneCISA recorded no public exploit code and no evidence of exploitation.
  • AutomatableyesAn attacker can reliably automate reconnaissance through exploitation, so this scales.
  • Technical ImpacttotalSuccessful exploitation gives total control of the vulnerable component.
CISA publishes the decision points, not a final SSVC decision. The decision also depends on mission and well-being impact, which is a property of your deployment rather than of the vulnerability.
EPSS probability
0.54% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 45.6% of scored records. A rank, not a probability.
NVD base score
9.1 (CVSS v3.x), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
NVD analysis status
Deferred. NVD last modified this record on 2026-09-14.
Red Hat severity
No Red Hat rating. Red Hat rates the CVEs that affect its products.

Exploit-prediction scores from FIRST. Independent scoring and analysis status from the NVD. Vendor severity from Red Hat. Exploitation assessment and catalog membership from CISA.

04 Metadata

Published
2026-09-14 10:38Z1 MO AGO
Last updated
2026-09-14 19:45Z1 MO AGO
Reserved
2026-09-09
Assigning CNA
apache
Record state
PUBLISHED
Severity
Critical (CVSS 9.1)
CNA CVSS vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:N
Weaknesses
  • CWE-290Authentication Bypass by SpoofingBase
Data version
5.2
Document digest
cb388e8b8221355247ec7f168046db9fece964eb819249795f7bad728bb17d2d

05 Affected products

VendorProductVersionsPlatforms
Apache Software FoundationApache Syncope3.0.0-M0 to 3.0.16, 4.0.0-M0 to 4.0.7, 4.1.0-M0 to 4.1.2—

06 References