CVE-2026-121881

Posit Workbench code-server session-state RPC (get_last_seen) SQL injection

Published Nov 6, 2026 CVSS 4.0 · 5.7 Medium EPSS < 1% KEV · Not listed
Description
SQL injection vulnerability in the get_last_seen code-server session-state RPC in Posit Software, PBC Posit Workbench before 2026.08.0 allows authenticated users to read arbitrary data from the Workbench database via the sessionIds parameter.



NOTE: exploitation requires a valid authenticated session; no administrative privileges are needed. The vulnerability is limited to disclosure of database contents.

Remediation

Vendor Solution

Upgrade to Posit Workbench 2026.08.0 or later. The patched release binds the caller-supplied session identifiers as query parameters instead of concatenating them into the SQL statement.

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Posit Software
Posit Software posit Workbench
Vendors & Products Posit Software
Posit Software posit Workbench
Type Values Removed Values Added
Description SQL injection vulnerability in the get_last_seen code-server session-state RPC in Posit Software, PBC Posit Workbench before 2026.08.0 allows authenticated users to read arbitrary data from the Workbench database via the sessionIds parameter. NOTE: exploitation requires a valid authenticated session; no administrative privileges are needed. The vulnerability is limited to disclosure of database contents.
Title Posit Workbench code-server session-state RPC (get_last_seen) SQL injection
First Time appeared Posit
Posit workbench
Weaknesses CWE-89
CPEs cpe:2.3:a:posit:workbench:*:*:*:*:*:*:*:*
Vendors & Products Posit
Posit workbench
References
Metrics cvssV4_0

{'score': 5.7, 'vector': 'CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/E:P/AU:Y/R:A/V:C/RE:M/U:Amber'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
POSIT
Published
Updated
Nov 6, 2026, 5:45 PM
Reserved
Nov 4, 2026, 10:49 AM
Status
Awaiting Analysis
Published
Nov 6, 2026, 4:17 PM
Modified
Nov 6, 2026, 8:38 PM