CVE-2026-76647

Exploitation

Public exploit code exists. CISA's assessment records a public proof of concept. That is not a report of exploitation in the wild.

SSVC decision

• ExploitationpocPublic proof-of-concept exploit code exists. Not a report of exploitation in the wild.
• AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
• 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

0.38% probability of exploitation activity in the next 30 days.

EPSS percentile

Ranks above 30.3% of scored records. A rank, not a probability.

NVD base score

8.8 (CVSS v3.x), scored by the NVD independently of the CNA.

NVD CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

NVD analysis status

Received. NVD last modified this record on 2026-08-27.

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.

Published

2026-08-19 19:26Z15 DAYS AGO

Last updated

2026-08-27 15:49Z8 DAYS AGO

Reserved

2026-08-19

Assigning CNA

certcc

Record state

PUBLISHED

Severity

High (CVSS 8.8)

CNA CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weaknesses

• CWE-200Exposure of Sensitive Information to an Unauthorized ActorClass
• CWE-639Authorization Bypass Through User-Controlled KeyBase
• CWE-862Missing AuthorizationClass

Data version

5.2

Document digest

9ed470187bafd9d064a10f1b145f8537f085174ea8ebdadb529bcd4732fafdc4

• vokecyber.comhttps://vokecyber.com/research/leantime-jsonrpc-editown-account-takeover
• vokecyber.comhttps://vokecyber.com/blog/leantime-jsonrpc-editown-account-takeover
• leantime.iohttps://leantime.io/unlocking-leantimes-power-a-guide-to-the-json-rpc-api/