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TI-2026-85968 Aliases CVE-2026-121881GHSA-9mg6-47p6-97j7

SQL injection in Posit Workbench code-server session-state RPC

Priority LOW 25CWE-89Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Attack requirements
None
Impact type
SQL injection
Confidentiality · integrity · availability
High · None · None
Fix status
Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-89.

Summary

Posit Software, PBC Posit Workbench before 2026.08.0 contains an SQL injection flaw in the get_last_seen code-server session-state RPC. The flaw occurs because special elements in SQL commands are not properly neutralized (CWE-89). An authenticated user without administrative privileges can read arbitrary data from the Workbench database.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

Description from the CNA

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.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV
EPSS 0.00265 18th percentileScored 2026-11-07
Fix Fixed Posit Workbench (Posit Software, PBC): 2026.08.0

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation
None
Automatable
No
Technical impact
Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

VendorProductAffected versionsFixed inStatusSource
Posit Software, PBCPosit Workbenchbefore 2026.08.02026.08.0Patch availableCNA
  • Posit Workbench VendorPosit Software, PBC Affected before 2026.08.0 Fixed in 2026.08.0 Patch available CNA

CPE names CNA · 1

CPEVersionsRoleVendor
cpe:2.3:a:posit:workbench:*:*:*:*:*:*:*:*———
  • cpe:2.3:a:posit:workbench:*:*:*:*:*:*:*:* Versions — — ·—

Remediation

Upgrade Posit Workbench to version 2026.08.0 or later.

Written with Claude Haiku 5.5 from the sources below · 2026-11-06

  • Fix · CNA Posit Workbench (Posit Software, PBC) Fixed in 2026.08.0

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

  • Advisory ·

    Posit Workbench — Posit Workbench release notes

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-85967 Authorization bypass in RStudio Server and Posit Workbench port proxyPriority LOW 21
    Show all 2 records → Advisory →
  • Advisory ·

    Posit Workbench — trust.posit.co/updates

    2 records Highest priority Priority LOW 2 LOW

    Other records, highest priority first

    • TI-2026-85967 Authorization bypass in RStudio Server and Posit Workbench port proxyPriority LOW 21
    Show all 2 records → Advisory →

Timeline

  1. 2026-11-06 Threatist record created from CVE-2026-121881
  2. 2026-11-06 CISA SSVC decision points changed
  3. 2026-11-06 Priority changed: MEDIUM → LOW
  4. 2026-11-06 Alias added: GHSA-9mg6-47p6-97j7

References

Advisory 2

  • TI-2026-85967 Authorization bypass in RStudio Server and Posit Workbench port proxy CVSS 4.0MEDIUM 4.7

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences