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01 Record

CVE-2026-66885

Livebook Teams identity callback lacks state binding, allowing login CSRF

MediumPUBLISHEDCNA: EEF
CNA base score6.8 CVSS v4.0CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
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02 Description

Livebook Teams identity callback lacks state binding, allowing login CSRF

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.
  • AutomatablenoAt least one step from reconnaissance to exploitation cannot be reliably automated.
  • Technical ImpactpartialSuccessful exploitation gives limited 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
0.23% probability of exploitation activity in the next 30 days.
EPSS percentile
Equal to or higher than the score of 14.2% of scored records. A rank, not a probability.
NVD base score
6.8 (CVSS v4.0), scored by the NVD independently of the CNA.
NVD CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:X/V:X/RE:X/U:X
NVD analysis status
Analyzed. NVD last modified this record on 2026-10-24.
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
2026-08-05 19:44Z2 MO AGO
Last updated
2026-08-06 13:09Z2 MO AGO
Reserved
2026-07-28
Assigning CNA
EEF
Record state
PUBLISHED
Severity
Medium (CVSS 6.8)
CNA CVSS vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:A/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N
Weaknesses
  • CWE-352Cross-Site Request Forgery (CSRF)Compound
Data version
5.2
Document digest
e5fd5bd987d58677f39888fade3cc300d20813e68d377908cf83d5179f01a8f6

05 Affected products

VendorProductVersionsPlatforms
livebook-devlivebook0.15.0 to < 0.18.7, 0.19.0 to < 0.19.9, 0.15.0-cuda12 to < 0.18.7-cuda12, 0.19.0-cuda12 to < 0.19.9-cuda12, 4380a411920531223088267ed1c0ad21f96ef660 to < *—

06 References