An issue was discovered in Simple Machines Forum (SMF) before release 2.0.17.

published 2020-03-20 6 y ago modified 2026-06-17 4 mo ago also EUVD-2019-3245

cvss: 9.8; version 3.1, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 1.5%; EPSS 1.5% chance of exploitation in 30 days, percentile 73%
public exploits: 0; none known

An issue was discovered in Simple Machines Forum (SMF) before release 2.0.17. There is SSRF related to Subs-Package.php and Subs.php because user-supplied data is used directly in curl calls.

Patch / fix

fixed in 1

simplemachines simple_machine_forum 2.0.17

Exploit prediction

1.47% chance of exploitation in the next 30 days, higher than 73% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

pastebin.com https://pastebin.com/raw/prE3iiLm referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.1	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD	2.0	7.5	AV:N/AC:L/Au:N/C:P/I:P/A:P

Classification

Weakness

CWE-918 Server-Side Request Forgery

References

pastebin.com /raw/prE3iiLm
exploit, third-party-advisory
simplemachines.org /community/index.php?board=1.0
release-notes, vendor-advisory

Sources

CVE List CVE-2019-11574
NVD CVE-2019-11574

Fencer Vulns keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.

Summary