CVE-2021-28940

CRITICAL

MagpieRSS 0.72 - OS Command Injection via RSS URL Parameter

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2021-28940. PoCs published by bl4ckh4ck5.

AI-analyzed exploit summary The writeup describes a command injection and SSRF vulnerability in MagpieRSS 0.72 due to improper escaping of user-supplied URLs in the Snoopy.class.inc file. The issue allows attackers to inject arbitrary commands or perform SSRF attacks via crafted URLs in the magpie_debug.php and magpie_simple.php scripts.

Description

Because of a incorrect escaped exec command in MagpieRSS in 0.72 in the /extlib/Snoopy.class.inc file, it is possible to add a extra command to the curl binary. This creates an issue on the /scripts/magpie_debug.php and /scripts/magpie_simple.php page that if you send a specific https url in the RSS URL field, you are able to execute arbitrary commands.

Exploits (1)

exploitdb WRITEUP
by bl4ckh4ck5 · textwebappsphp
https://www.exploit-db.com/exploits/49643

The writeup describes a command injection and SSRF vulnerability in MagpieRSS 0.72 due to improper escaping of user-supplied URLs in the Snoopy.class.inc file. The issue allows attackers to inject arbitrary commands or perform SSRF attacks via crafted URLs in the magpie_debug.php and magpie_simple.php scripts.

Classification
Writeup 90%
Attack Type
Rce | Ssrf
Complexity
Trivial
Reliability
Reliable
Target: MagpieRSS 0.72
No auth needed
Prerequisites: Access to magpie_debug.php or magpie_simple.php · Ability to send crafted URLs
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (3)

Core 3
Core References
Exploit, Third Party Advisory x_refsource_misc
https://pastebin.com/kpzHKKJu
Exploit, Third Party Advisory, VDB Entry x_refsource_misc
https://www.exploit-db.com/exploits/49643

Scores

CVSS v3 9.8
EPSS 0.0330
EPSS Percentile 86.9%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Details

CWE
CWE-116
Status published
Products (1)
magpierss_project/magpierss 0.72
Published Apr 02, 2021
Tracked Since Feb 18, 2026