CVE-2018-5955

CRITICALNVD 9.89.8—
EchelonGraph scoreMEDIUM confidence

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2022-05-14. NVD baseline CVSS 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, nvd
Weaponized
9.8EG
EchelonGraph verdictPatch this weekExploitation is likely or a public exploit exists.
  • High exploitation likelihood — EPSS 81%
  • Public exploit code is available (Metasploit, Exploit-DB (verified), epss top5pct, epss high, public exploit)
CISA-KEV: Not listedEPSS PROB: 81%CVSS: 9.8Exploit: Metasploit · Exploit-DB (verified) · epss top5pct · epss high · public exploitExposed: 0

No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.

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(medium)
EG Risk
81(Track*)
EG Risk 81/100SSVC: Track*

EG Risk is EchelonGraph's 0–100 priority score: it fuses intrinsic severity with real-world exploitation and automatability so you can rank equal-severity CVEs and fix the most dangerous first. Higher = act sooner. Distinct from the 0–10 EG Score (severity).

How it’s computed
Severity98% × 45%
Exploitation81% × 40%
Automatability30% × 15%
Action: Watch closely — could escalate to Attend.
EPSS PROB
81%
EPSS %ILE
100%
KEV
Not listed

Published

January 21, 2018

Last Modified

November 21, 2024

Advisory Details (1)

Auto-updated Sep 2, 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.

Data Freshness Timeline

(refreshed 3× in last 7d / 13× 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.

  1. 2026-09-06 13:44 UTCEPSS rescore
  2. 2026-09-04 13:56 UTCEPSS rescore
  3. 2026-09-02 14:07 UTCEPSS rescore
  4. 2026-08-30 19:13 UTCEPSS rescore
  5. 2026-08-28 21:36 UTCEPSS rescore
  6. 2026-08-26 14:42 UTCEPSS rescore
  7. 2026-08-25 13:45 UTCEPSS rescore
  8. 2026-08-24 14:11 UTCEPSS rescore
  9. 2026-08-21 23:45 UTCEPSS rescore
  10. 2026-08-19 17:00 UTCEPSS rescore
  11. 2026-08-16 02:10 UTCEPSS rescore
  12. 2026-08-15 01:26 UTCEPSS rescore
  13. 2026-08-12 13:47 UTCEPSS rescore
  14. 2026-08-04 10:33 UTCEPSS rescore
  15. 2026-08-02 02:23 UTCEPSS rescore
  16. 2026-07-30 16:24 UTCEPSS rescore
  17. 2026-07-26 14:51 UTCEPSS rescore
  18. 2026-07-25 14:14 UTCEPSS rescore
  19. 2026-07-25 14:14 UTCEPSS rescore
  20. 2026-07-24 14:14 UTCEPSS rescore
  21. 2026-07-24 14:14 UTCEPSS rescore
  22. 2026-07-23 14:15 UTCEPSS rescore
  23. 2026-07-23 14:15 UTCEPSS rescore
  24. 2026-07-23 01:37 UTCEG score recompute
  25. 2026-07-22 22:17 UTCEG score recompute
Show 43 more
  1. 2026-07-22 14:05 UTCEPSS rescore
  2. 2026-07-21 15:22 UTCEPSS rescore
  3. 2026-07-15 16:55 UTCEPSS rescore
  4. 2026-07-15 01:56 UTCEPSS rescore
  5. 2026-07-12 05:43 UTCEPSS rescore
  6. 2026-07-09 19:06 UTCEPSS rescore
  7. 2026-07-06 02:20 UTCEPSS rescore
  8. 2026-06-30 23:20 UTCEPSS rescore
  9. 2026-06-30 23:20 UTCEPSS rescore
  10. 2026-06-25 13:47 UTCEPSS rescore
  11. 2026-06-25 13:47 UTCEPSS rescore
  12. 2026-06-24 14:02 UTCEPSS rescore
  13. 2026-06-24 14:02 UTCEPSS rescore
  14. 2026-06-23 21:30 UTCEPSS rescore
  15. 2026-06-23 21:30 UTCEPSS rescore
  16. 2026-06-21 01:57 UTCEPSS rescore
  17. 2026-06-21 01:57 UTCEPSS rescore
  18. 2026-06-16 17:50 UTCEPSS rescore
  19. 2026-06-16 17:50 UTCEPSS rescore
  20. 2026-06-15 17:45 UTCEPSS rescore
  21. 2026-06-13 22:58 UTCEPSS rescore
  22. 2026-06-12 23:09 UTCEPSS rescore
  23. 2026-06-12 23:09 UTCEPSS rescore
  24. 2026-06-10 22:16 UTCEPSS rescore
  25. 2026-06-10 13:19 UTCEPSS rescore
  26. 2026-06-08 14:14 UTCEPSS rescore
  27. 2026-06-05 22:45 UTCEPSS rescore
  28. 2026-06-05 22:45 UTCEPSS rescore
  29. 2026-06-05 06:08 UTCEPSS rescore
  30. 2026-06-05 06:08 UTCEPSS rescore
  31. 2026-06-04 13:10 UTCEPSS rescore
  32. 2026-06-04 13:10 UTCEPSS rescore
  33. 2026-06-01 13:50 UTCEPSS rescore
  34. 2026-05-31 22:29 UTCEPSS rescore
  35. 2026-05-31 22:29 UTCEPSS rescore
  36. 2026-05-29 13:41 UTCEPSS rescore
  37. 2026-05-28 13:43 UTCEPSS rescore
  38. 2026-05-28 13:42 UTCEPSS rescore
  39. 2026-05-28 12:16 UTCEG score recompute
  40. 2026-05-28 12:16 UTCGHSA enrichment
  41. 2026-05-26 07:17 UTCEPSS rescore
  42. 2026-05-26 07:17 UTCEPSS rescore
  43. 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 81% probability of exploitation in the next 30 days, which ranks it in the top 0.4% of all scored CVEs.
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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