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CVE-2026-34938 is a sandbox bypass vulnerability in PraisonAI praisonai-agents prior to version 1.5.90. The flaw is in the execute_code() functionality, where attacker-controlled Python is executed inside a three-layer sandbox. The protection can be fully bypassed by supplying a str subclass with an overridden startswith() method to the _safe_getattr wrapper. This allows the attacker to evade the intended attribute-safety checks and escape the in-process sandbox, resulting in arbitrary operating system command execution on the host running the vulnerable software.
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What an attacker gets, and what they’ve been doing with it.
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No public exploit code observed for this vulnerability.
Products and vendors Mallory has correlated with this vulnerability. Open in Mallory to drill down to specific CPE configurations and version ranges.
Vendor-confirmed product mapping. Mallory continuously reconciles this list against your asset inventory.
15 sources tracked across advisories, community write-ups, and news. New activity surfaces here as Mallory finds it.
An earlier PraisonAI sandbox bypass issue involving a str subclass technique, mentioned as a prior vulnerability whose patches do not stop the newly described bypass.
A sandbox bypass vulnerability in PraisonAI praisonai-agents execute_code() that allows attacker-controlled Python to achieve arbitrary OS command execution on the host.
Query your assets running an affected version, and investigate the blast radius.
Every observed campaign linking this CVE to a named adversary.
Malware families riding this exploit, with evidence and IOCs.
YARA, Sigma, Snort, and vendor rules, auto-deployed to your SIEM.
Cross-references every affected SKU, including bundled OEM variants.
Community discussion across Reddit, Mastodon, and other social sources.