CVE-2026-34934 PraisonAI: Second-Order SQL Injection in `get_all_user_threads`
Attackers can execute arbitrary SQL commands via stored thread IDs, leading to full database access in PraisonAI.
- Exploited in the wild
- Not known
- Login needed
- Not needed
- Attackable
- Over the internet
- Victim action needed
- Not needed
- Fix
- Available
What is CVE-2026-34934?
CVE-2026-34934 is a critical SQL injection vulnerability in MervinPraison PraisonAI, published on 3 Apr 2026. An attacker can exploit it over the internet without logging in, with no action from the victim.
Official description
PraisonAI is a multi-agent teams system. Prior to version 4.5.90, the get_all_user_threads function constructs raw SQL queries using f-strings with unescaped thread IDs fetched from the database. An attacker stores a malicious thread ID via update_thread. When the application loads the thread list, the injected payload executes and grants full database access. This issue has been patched in version 4.5.90.
Weakness: CWE-89
Which versions are affected by CVE-2026-34934?
3 open source packages ship an affected version, including praisonai. It affects 1 product.
| Package | Affected | Fixed in |
|---|---|---|
praisonai PyPI | All versions | 4.5.90 |
praisonai PyPI | All versions | 4.5.90 |
praisonai PyPI | All versions | 4.5.90 |
Products include Praison Praisonai.
How do I fix CVE-2026-34934?
Upgrade praisonai to 4.5.90 or later.
Use parameterised queries everywhere and never build SQL by joining strings. Upgrade affected software first; a web application firewall only buys time. More about SQL injection.
Is CVE-2026-34934 being exploited?
It is not confirmed as exploited in the wild, but public exploit code for CVE-2026-34934 exists.
Other vulnerabilities in MervinPraison PraisonAI
- CVE-2026-39888 PraisonAIAgents has a sandbox escape via exception frame traversal in `execute_code` (subprocess mode)
- CVE-2026-41497 Incomplete fix for CVE-2026-34935: Command Injection in MervinPraison/PraisonAI
- CVE-2026-40288 PraisonAI: Critical RCE via `type: job` workflow YAML
- CVE-2026-39890 PraisonAI Affected by Remote Code Execution via YAML Deserialization in Agent Definition Loading
- CVE-2026-34935 PraisonAI: OS Command Injection in MCPHandler.parse_mcp_command()
Sources
Also known as GHSA-9cq8-3v94-434g, PYSEC-2026-470.