CVE-2018-5955

CRITICALNVD 9.89.8—Weaponized

9.8

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.

CVSS v3: 9.8
EG Score: 9.8(high)
EPSS: 99.4%
KEV: Not listed

Published

January 21, 2018

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Jun 6, 2026

🔬 Proof of concept available. No patch confirmed yet.

generic🟡 PoC Available

GitStack - Unsanitized Argument Remote Code Execution (Metasploit) - Windows remote Exploit

https://www.exploit-db.com/exploits/44356/

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-20Improper Input Validation

Data Freshness Timeline

(refreshed 5× in last 7d / 22× in last 30d)

Each row is a source pipeline that fetched or updated this CVE on that date, with what changed. For example, "NVD update" means NVD published or revised its analysis for this CVE; "MITRE cvelistV5" means we ingested or refreshed it from the CNA feed. Most recent first.

2026-06-12 23:09 UTCEPSS rescore
2026-06-12 23:09 UTCEPSS rescore
2026-06-10 22:16 UTCEPSS rescore
2026-06-10 13:19 UTCEPSS rescore
2026-06-08 14:14 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 22:45 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-05 06:08 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-04 13:10 UTCEPSS rescore
2026-06-01 13:50 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-31 22:29 UTCEPSS rescore
2026-05-29 13:41 UTCEPSS rescore
2026-05-28 13:43 UTCEPSS rescore
2026-05-28 13:42 UTCEPSS rescore
2026-05-28 12:16 UTCEG score recompute
2026-05-28 12:16 UTCGHSA enrichment
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 07:17 UTCEPSS rescore
2026-05-26 00:46 UTCOSV refresh

Publicly available exploits

(6 references)

Working exploit code is in the public domain (2 Metasploit modules) (2 GitHub PoCs) (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

GitHub PoCMikeTheHash/CVE-2018-5955
First seen Jun 23, 2023
An exploit for CVE-2018-5955 GitStack 2.3.10 Unauthenticated RCE
Open source ↗
GitHub PoCYagamiiLight/Cerberus
First seen Dec 21, 2019
一款功能强大的漏洞扫描器，子域名爆破使用aioDNS，asyncio异步快速扫描，覆盖目标全方位资产进行批量漏洞扫描，中间件信息收集，自动收集ip代理，探测Waf信息时自动使用来保护本机真实Ip，在本机Ip被Waf杀死后，自动切换代理Ip进行扫描，Waf信息收集(国内外100+款waf信息)包括安全狗，云锁，阿里云，云盾，腾讯云等，提供部分已知waf bypass 方案，中间件漏洞检测(Thinkphp,weblogic等 CVE-2018-5955,CVE-2018-12613,CVE-2018-11759等)，支持SQL注入, XSS, 命令执行,文件包含, ssrf 漏洞扫描, 支持自定义漏洞邮箱推送功能
Open source ↗
Exploit-DBEDB-44356✓ verified
First seen Mar 29, 2018
GitStack - Unsanitized Argument Remote Code Execution (Metasploit)
Open source ↗
Exploit-DBEDB-44044
First seen Jan 15, 2018
GitStack - Remote Code Execution
Open source ↗
Metasploitexploit/windows/http/gitstack_rce✓ verified
First seen Jan 15, 2018
GitStack Unsanitized Argument RCE
Open source ↗
Metasploitauxiliary/admin/http/gitstack_rest✓ verified
First seen Jan 15, 2018
GitStack Unauthenticated REST API Requests
Open source ↗

Frequently asked(5)

What is CVE-2018-5955?

CVE-2018-5955 is a critical vulnerability published on January 21, 2018. 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.

When was CVE-2018-5955 disclosed?

CVE-2018-5955 was first published in the National Vulnerability Database on January 21, 2018, with the most recent update on November 21, 2024. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-2018-5955 actively exploited?

CVE-2018-5955 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 99.4% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-2018-5955?

CVE-2018-5955 has a CVSS v3 base score of 9.8 (NVD).

How do I remediate CVE-2018-5955?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2018-5955, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

Dependency Blast Radius

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CVE-2018-5955

📅 Published

🔄 Last Modified

📋 Advisory Details (1)