Posit Workbench code-server session-state RPC (get_last_seen) SQL injection
- Exploited
- No known exploitation
- Fix
- Fixed in 2026.08.0
- Who is exposed
- Not reported
Do first: Upgrade to a fixed version: 2026.08.0.
- Last modified
- A 0-100 score for how much a CVE matters across the industry: exploitation, exposure, how widely the software is used, severity and whether a fix exists.What do these mean? →
- 9/100 · provisional
- Whether working attack code is public (Exploit-DB, Metasploit, Nuclei or GitHub). Public code makes attacks easier.What do these mean? →
- None on Exploit-DB, Metasploit or GitHub
- Exploitation: none
- Automatable: no
- Technical impact: partial
Summary
Posit Workbench, a data science platform, contains a SQL injection flaw in its code-server session-state function that lets a logged-in user read arbitrary data from the Workbench database. The flaw can be reached remotely over the network, but it requires a valid user account, though no administrator privileges are needed.
Written by anthropic/claude-haiku-5.5 from the sources below. Verify against them.
Read the original 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.
cve.now Index
- Exploitation0/40No signal
- Exposure3/25Reachable over the network · Unknown: No advisory context yet
- Reach?/20Unknown. No tracked technology or package matched
- Severity5.7/10CVSS 5.7
- No patch0/5No signal
What would change the score
- Would score about 64 if added to CISA KEV
- Would score about 59 if CISA's SSVC rates exploitation active
- Would score about 28 if advisories confirm default setups are exposed
What to do
Upgrade to a fixed version: 2026.08.0.
Timeline
- CVE published
- First seen by cve.now
- CISA SSVC assessment
Exploitation: none · Automatable: no · Technical impact: partial
- Record last updated
Affected versions
- Posit Software, PBC Posit Workbench
fixed in 2026.08.0
Evidence 2
- Advisory
- Advisory
Corrections
None so far.
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Questions about CVE-2026-121881
Is CVE-2026-121881 being exploited?
It is not in CISA's Known Exploited Vulnerabilities catalog, and CISA's SSVC assessment does not mark exploitation as active. That does not mean it has not been attacked: vendors and researchers can report attacks before CISA lists them. No public exploit code is tracked.Source: cve.now feed data
Which versions are affected by CVE-2026-121881?
Posit Workbench: before 2026.08.0.Source: cve.now feed data
How do I fix CVE-2026-121881?
Upgrade to a fixed version: 2026.08.0.Source: cve.now feed data