An issue was discovered in GitStack through 2.3.10.

published 2018-01-21 8 y ago modified 2026-06-17 4 mo ago also EUVD-2018-17722

cvss: 9.8; version 3.0, NVD
cisa kev: Not listed; not in CISA's catalog
epss: 81.6%; EPSS 81.6% chance of exploitation in 30 days, percentile 99.6%
public exploits: 4; Metasploit, Exploit-DB

An issue was discovered in GitStack through 2.3.10. User controlled input is not sufficiently filtered, allowing an unauthenticated attacker to add a user to the server via the username and password fields to the rest/user/ URI.

Timeline

2018-01-15 First public exploit (Metasploit auxiliary/admin/http/gitstack_rest)
2018-01-21 Published

Exploit prediction

81.56% chance of exploitation in the next 30 days, higher than 99.6% of all scored CVEs (FIRST EPSS, 2026-11-08).

Exploits and checks

Metasploit auxiliary/admin/http/gitstack_rest GitStack Unauthenticated REST API Requests metasploit auxiliary, normal rank, 2018-01-15
Metasploit exploit/windows/http/gitstack_rce GitStack Unsanitized Argument RCE metasploit exploit, great rank, 2018-01-15
EDB-44356 GitStack - Unsanitized Argument Remote Code Execution (Metasploit) remote, 2018-03-29
EDB-44044 GitStack - Remote Code Execution webapps, 2018-01-15
blogs.securiteam.com https://blogs.securiteam.com/index.php/archives/3557 referenced PoC, tagged "exploit" by a source, unverified

CVSS scores

assigned by	version	score	vector
NVD	3.0	9.8	CVSS:3.0/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-20 Improper Input Validation

References

exploit-db.com /exploits/44356/
exploit, third-party-advisory, vdb-entry
blogs.securiteam.com /index.php/archives/3557
exploit, third-party-advisory

Sources

CVE List CVE-2018-5955
NVD CVE-2018-5955

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