CVE-2026-29871

HighPublic PoC

Published: 27 March 2026

Published

27 March 2026

Modified

02 April 2026

KEV Added

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Patch

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CVSS Score 7.5 CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

EPSS Score 0.0016 36.2th percentile

Risk Priority 15 60% EPSS · 20% KEV · 20% CVSS

Summary

CVE-2026-29871 is a high-severity Path Traversal (CWE-22) vulnerability in Theunwindai Awesome Llm Apps. Its CVSS base score is 7.5 (High).

Operationally, exploitation aligns with the MITRE ATT&CK technique Exploit Public-Facing Application (T1190); ranked at the 36.2th percentile by exploit likelihood (below the median); it is not currently listed in the CISA KEV catalog; a public proof-of-concept is referenced.

This vulnerability is AI-related — categorised as Other AI Platforms.

The strongest mitigations our analysis identified are NIST 800-53 AC-3 (Access Enforcement) and SI-10 (Information Input Validation).

Threat & Defense at a Glance

What attackers do: exploitation maps to Exploit Public-Facing Application (T1190) and 2 other techniques. What defenders deploy: see the NIST 800-53 controls recommended below.

Threat & Defense Details

Mitigating Controls (NIST 800-53 r5)AI

SI-10 Information Input Validation good match

prevent

Directly mitigates path traversal by requiring validation of the user-controlled path parameter in the stream_audio function to reject directory traversal sequences like '../'.

AC-3 Access Enforcement good match

prevent

Enforces approved access authorizations on filesystem resources, preventing the stream-audio endpoint from reading arbitrary files outside intended directories.

SI-9 Information Input Restrictions partial match

prevent

Restricts inputs to the stream-audio endpoint to approved path formats and sources, limiting exposure to malicious filesystem traversal attempts.

MITRE ATT&CK Enterprise TechniquesAI

T1190 Exploit Public-Facing Application Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network.

attack.mitre.org →

T1005 Data from Local System Collection

Adversaries may search local system sources, such as file systems, configuration files, local databases, virtual machine files, or process memory, to find files of interest and sensitive data prior to Exfiltration.

attack.mitre.org →

T1552.001 Credentials In Files Credential Access

Adversaries may search local file systems and remote file shares for files containing insecurely stored credentials.

attack.mitre.org →

Why these techniques?

Path traversal in unauthenticated public-facing FastAPI endpoint directly enables remote arbitrary file read (T1005), including credentials/configs (T1552.001), via exploitation of a web app vuln (T1190).

Confidence: HIGH · MITRE ATT&CK Enterprise v18.1

NVD Description

A path traversal vulnerability exists in the awesome-llm-apps project in commit e46690f99c3f08be80a9877fab52acacf7ab8251 (2026-01-19) in the Beifong AI News and Podcast Agent backend in FastAPI backend, stream-audio endpoint, in file routers/podcast_router.py, in function stream_audio. The stream-audio endpoint accepts a user-controlled path…

parameter that is concatenated into a filesystem path without proper validation or restriction. An unauthenticated remote attacker can exploit this vulnerability to read arbitrary files from the server filesystem, potentially disclosing sensitive information such as configuration files and credentials.

Deeper analysisAI

CVE-2026-29871 is a path traversal vulnerability (CWE-22) affecting the awesome-llm-apps project at commit e46690f99c3f08be80a9877fab52acacf7ab8251, dated 2026-01-19. It resides in the Beifong AI News and Podcast Agent backend, built with FastAPI, specifically in the stream-audio endpoint defined in the file routers/podcast_router.py within the stream_audio function. The vulnerability arises because the endpoint accepts a user-controlled path parameter that is concatenated directly into a filesystem path without proper validation or restriction, enabling unauthorized file access.

An unauthenticated remote attacker can exploit this vulnerability over the network (AV:N) with low attack complexity (AC:L), no privileges (PR:N), no user interaction (UI:N), and unchanged scope (S:U). By supplying a crafted path parameter, such as one using directory traversal sequences, the attacker can read arbitrary files from the server filesystem. This may disclose sensitive information, including configuration files and credentials, with a CVSS v3.1 base score of 7.5 (C:H/I:N/A:N) indicating high confidentiality impact.

Mitigation details and additional information are available in the security research advisory at https://github.com/lilmingwa13/security-research/blob/main/CVE-2026-29871.md, published on 2026-03-27.