PraisonAI MCP HTTP server has unauthenticated unbounded session accumulation (memory exhaustion; session TTL never enforced)

SummaryThe PraisonAI MCP HTTP-stream server creates a new in-memory session on every initialize request and never removes it. The cleanup routine that would expire sessions cleanupsessions is defined but never called anywhere in the codebase, and the configured session TTL is never enforced. Ther...

PraisonAI serve agents --api-key is ignored, allowing unauthenticated remote agent execution

Summary PraisonAI's praisonai serve agents command exposes --api-key as the documented authentication control for production/external deployments, but the configured key is not enforced on the public agent invocation compatibility endpoints. An operator can start the server with --api-key and bin...

PYSEC-2026-3901 praisonaiagents: ast_grep_rewrite rewrites arbitrary files without the @require_approval gate enforced on every sibling mutation tool

Target: PraisonAI MervinPraison/PraisonAI Affected component: praisonaiagents/tools/astgreptool.py — astgreprewrite Affected versions: master at ce97667156a116c50b4a3d1aa21e09f048903fda; reproduced against the current praisonaiagents PyPI release praisonaiagents --rewrite --lang --update-all line...

PYSEC-2026-3905 praisonaiagents has an SSRF protection bypass in `spider_tools._host_is_blocked()` via DNS-resolved hostnames (`127.0.0.1.nip.io`)

Summary praisonaiagents/tools/spidertools.py contains an SSRF protection bypass. The function hostisblocked validates URLs against a list of blocked IP literals and hostname aliases, but never performs DNS resolution. Any hostname that resolves to a private or loopback IP address — including publ...

PYSEC-2026-3897 PraisonAI MCP HTTP server has unauthenticated unbounded session accumulation (memory exhaustion; session TTL never enforced)

Summary The PraisonAI MCP HTTP-stream server creates a new in-memory session on every initialize request and never removes it. The cleanup routine that would expire sessions cleanupsessions is defined but never called anywhere in the codebase, and the configured session TTL is never enforced. The...

PraisonAI: [Auth Bypass] `praisonai serve agents --api-key` is silently ignored — agent-invocation routes (`POST /agents`, `POST /agents/{agent_name}`) run unauthenticated

Summarypraisonai serve agents exposes HTTP routes that invoke registered agents. The CLI advertises --api-key with help text "API key for authentication", parses it, and forwards it into ServeHandler. But createagentsapp never reads config"apikey" again and installs no auth dependency or middlewa...

PYSEC-2026-3887 PraisonAI serve agents --api-key is ignored, allowing unauthenticated remote agent execution

Summary PraisonAI's praisonai serve agents command exposes --api-key as the documented authentication control for production/external deployments, but the configured key is not enforced on the public agent invocation compatibility endpoints. An operator can start the server with --api-key and bin...

PYSEC-2026-3899 praisonaiagents: AgentServer declares auth_token but never enforces it on any route

Researcher: Kai Aizen — SnailSploit @SnailSploit, Adversarial & Offensive Security Research Target: https://github.com/MervinPraison/PraisonAI --- Package: praisonaiagents on PyPI Affected version empirically tested: 1.6.48 Component: praisonaiagents.server.AgentServer the bundled HTTP / SSE serv...

mcp-contextforge-gateway has RestrictedPython sandbox bypass via getattr builtin in python_sandbox_server

Commit: f855e54d5b7bc1c91b977574a03b91eff6b86bb6Component: mcp-servers/python/pythonsandboxserver/src/pythonsandboxserver/serverfastmcp.py VulnerabilityRestrictedPython's sandbox in ContextForge's pythonsandboxserver sub-project allows arbitrary Python execution via three compounding weaknesses:1...

PraisonAI has an origin validation bypass in MCP HTTP Stream transport that allows browser-mediated unauthenticated tool execution on local MCP server

SummaryPraisonAI's MCP HTTP Stream transport uses an unsafe prefix match when validating the Origin header. The default localhost allowlist includes origins such as http://localhost, and the validation accepts any origin that starts with an allowed value.As a result, an attacker-controlled origin...

PYSEC-2026-3862 mcp-contextforge-gateway has RestrictedPython sandbox bypass via getattr builtin in python_sandbox_server

Commit: f855e54d5b7bc1c91b977574a03b91eff6b86bb6 Component: mcp-servers/python/pythonsandboxserver/src/pythonsandboxserver/serverfastmcp.py Vulnerability RestrictedPython's sandbox in ContextForge's pythonsandboxserver sub-project allows arbitrary Python execution via three compounding weaknesses...

PYSEC-2026-3903 PraisonAI workflow include bypasses tools.py autoload opt-in and executes included recipe code

Summary PraisonAI's workflow include implementation implicitly imports and executes an included recipe's tools.py file even when the documented tools.py autoload opt-in is unset. This bypasses the hardening added for the prior automatic tools.py RCE advisory family. A workflow that includes an...

PYSEC-2026-3896 PraisonAI has an origin validation bypass in MCP HTTP Stream transport that allows browser-mediated unauthenticated tool execution on local MCP server

Summary PraisonAI's MCP HTTP Stream transport uses an unsafe prefix match when validating the Origin header. The default localhost allowlist includes origins such as http://localhost, and the validation accepts any origin that starts with an allowed value. As a result, an attacker-controlled orig...

PraisonAI workflow include bypasses tools.py autoload opt-in and executes included recipe code

SummaryPraisonAI's workflow include implementation implicitly imports and executes an included recipe's tools.py file even when the documented tools.py autoload opt-in is unset.This bypasses the hardening added for the prior automatic tools.py RCE advisory family. A workflow that includes an...

PYSEC-2026-3822 django CMS: Plugin move endpoint allows cyclic reparenting (DoS)

Summary The moveplugin admin endpoint does not prevent a plugin from being reparented under itself or one of its own descendants. Doing so creates a cycle in the plugin tree, after which the recursive descendant/ancestor SQL queries loop without terminating, stalling the request worker. Details...

PYSEC-2026-3891 PraisonAI workflow include bypasses tools.py autoload opt-in and executes included recipe code

Summary PraisonAI's workflow include implementation implicitly imports and executes an included recipe's tools.py file even when the documented tools.py autoload opt-in is unset. This bypasses the hardening added for the prior automatic tools.py RCE advisory family. A workflow that includes an...

praisonaiagents has a `web_crawl` SSRF protection bypass via unchecked redirect targets

Summarypraisonaiagents.tools.webcrawltools.webcrawl validates the initial URL and blocks direct loopback/private destinations by default, but the default httpx fallback still uses httpx.Clientfollowredirects=True and does not revalidate redirect targets.An attacker-controlled public URL can pass...

PraisonAI workflow include bypasses tools.py autoload opt-in and executes included recipe code

SummaryPraisonAI's workflow include implementation implicitly imports and executes an included recipe's tools.py file even when the documented tools.py autoload opt-in is unset.This bypasses the hardening added for the prior automatic tools.py RCE advisory family. A workflow that includes an...

PYSEC-2026-3900 praisonaiagents has a `web_crawl` SSRF protection bypass via unchecked redirect targets

Summary praisonaiagents.tools.webcrawltools.webcrawl validates the initial URL and blocks direct loopback/private destinations by default, but the default httpx fallback still uses httpx.Clientfollowredirects=True and does not revalidate redirect targets. An attacker-controlled public URL can pas...

asteval has a Sandbox Escape via BaseException Subclasses

SummaryAn attacker who can supply expressions to asteval.Interpreter.eval can raise SystemExit,KeyboardInterrupt, GeneratorExit, or BaseException from inside the sandbox. Theseexceptions are subclasses of BaseException but not Exception, so they bypass theexcept Exception: safety net in both run...