CVE-2026-27174

CRITICALPre-NVD 9.89.8
EchelonGraph scoreMEDIUM confidence

“—” beside the score: it is equal to the CVSS score beside it.

Score 9.8 from GitHub Security Advisory (severity: CRITICAL) published 2026-02-19. The CNA's CVSS baseline 9.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: the CNA's CVSS, EPSS, GitHub Security Advisory
Trending — 3 sources updated this weekWeaponized
9.8EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines at low or medium mission impact and sooner than that at high (the SSVC decision on this page).
  • Public exploit code is available (Metasploit)
CISA-KEV: Not listedEPSS PROB: 5.7%CVSS: 9.8Exploit: MetasploitExposed services: Not assessed

An upstream fix is merged but not yet released — mitigate (WAF / firewall / segmentation) until the release ships, then apply it.

MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP console feature. An include order bug in modules/panel.class.php causes execution to continue past a redirect() call that lacks an exit statement, allowing unauthenticated requests to reach the ajax handler in inc_panel_ajax.php. The console handler within that file passes user-supplied input from GET parameters (via register_globals) directly to eval() without any authentication check. An attacker can execute arbitrary PHP code by sending a crafted GET request to /admin.php with ajax_panel, op, and command parameters.

CVSS v3
9.8
EG Score
9.8CRITICALmedium confidence
EG Risk
85
EG Risk 85/100

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 (value × EchelonGraph’s weight)
Severity98% × 45%
The EG Score, 9.8 of 10.
Exploitation65% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 2 (Weaponized): a constant, not a probability.
Automatability100% × 15%
CISA's SSVC Automatable value: yes (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low, Track* at medium and Attend at high mission impact.
Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE.
Action: An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.
EPSS PROB
5.7%
EPSS %ILE
92nd
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low, Track* at medium and Attend at high mission impact.

An upstream fix is merged but not yet in a tagged release. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high until it ships, then apply the release.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). All three are CISA's SSVC values (Vulnrichment). EchelonGraph applied CISA's decision table to them; CISA publishes SSVC inputs and the table, not a decision for each CVE. Mission impact is CISA's Mission & Well-being decision point, and only you can judge it. CISA's table makes it high when Mission Prevalence is Essential — the vulnerable component "directly provides capabilities that constitute at least one MEF for at least one entity" (MEF: mission essential function) — or when Public Well-Being Impact is Irreversible: "multiple fatalities are likely", the cyber-physical system "is likely lost or destroyed", "extreme or serious externalities" are imposed on other parties, or social systems such as elections or the financial grid "are destabilized and potentially collapse". CISA's decision table

BOD 26-04 (CISA's remediation timeline, Table 1)3 days if the affected system is publicly exposed; 60 days if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable yes (CISA Vulnrichment) · Technical impact total (CISA Vulnrichment). Whether your system is publicly exposed is yours to answer. BOD 26-04 binds US Federal Civilian Executive Branch agencies; for anyone else it is CISA's published timeline, a reference rather than an obligation. The directive · how EchelonGraph applies it

Published

February 18, 2026

Last Modified

June 23, 2026

Advisory Details (3)

Auto-updated Oct 11, 2026
Upstream fix merged — awaiting tagged release. Sources: github_pr.
Web page

MajorDoMo Unauthenticated Remote Code Execution via Admin Console Eval | Advisories | VulnCheck

https://www.vulncheck.com/advisories/majordomo-unauthenticated-remote-code-execution-via-admin-console-eval
GitHub pull request

Fix: 8 security vulnerabilities (3 RCE, 1 module uninstall, 1 SQLi, 2 stored XSS, 1 reflected XSS)

Fix merged in sergejey/majordomo PR #1177 on 2026-02-18 — awaiting tagged release

https://github.com/sergejey/majordomo/pull/1177
Web page

MajorDoMo Revisited: What I Missed in 2023 - Chocapikk's Cybersecurity Blog

https://chocapikk.com/posts/2026/majordomo-revisited/

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 20× in last 7d / 35× in last 30d)

Each row is a time one of our pipelines fetched, updated or re-scored this CVE. 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. An arrow marks a change the record states ("CVSS v3 → 9.1"); EPSS and GHSA rows show the values recorded at that time, not what changed (EPSS values are rounded; hover one for the exact figures). Most recent first.

Showing the most recent 97 of 151 refreshes on record for this CVE.

A repeat, a row identical to one the same pipeline wrote less than 10 seconds earlier, is not a separate refresh and is not counted. 3 repeat rows among the latest 100 are merged into the row they repeat. The 54 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-16 19:06 UTCEG score recompute
  2. 2026-10-16 19:06 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  3. 2026-10-16 16:41 UTCEPSS rescoreEPSS 5.7% · 92nd percentile
  4. 2026-10-15 16:31 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  5. 2026-10-15 16:18 UTCEG score recompute
  6. 2026-10-15 16:18 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  7. 2026-10-14 16:32 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  8. 2026-10-14 10:24 UTCEG score recompute
  9. 2026-10-14 10:23 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  10. 2026-10-13 16:33 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  11. 2026-10-13 08:55 UTCEG score recompute
  12. 2026-10-13 08:55 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  13. 2026-10-12 16:33 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  14. 2026-10-12 16:17 UTCEG score recompute
  15. 2026-10-12 08:53 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  16. 2026-10-11 20:00 UTCEG score recompute
  17. 2026-10-11 17:13 UTCEG score recompute
  18. 2026-10-11 14:44 UTCEG score recompute
  19. 2026-10-11 13:48 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  20. 2026-10-10 20:00 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  21. 2026-10-09 20:07 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  22. 2026-10-08 17:11 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  23. 2026-10-07 23:47 UTCEPSS rescoreEPSS 5.2% · 92nd percentile
  24. 2026-10-06 15:17 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  25. 2026-10-05 17:42 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
Show 72 more
  1. 2026-10-04 23:21 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  2. 2026-10-03 14:25 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  3. 2026-10-01 19:49 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  4. 2026-09-30 15:03 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  5. 2026-09-28 13:51 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  6. 2026-09-26 15:58 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  7. 2026-09-26 00:26 UTCEPSS rescoreEPSS 5.1% · 92nd percentile
  8. 2026-09-20 20:15 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  9. 2026-09-18 19:27 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  10. 2026-09-17 19:30 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  11. 2026-09-16 14:08 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  12. 2026-09-16 05:15 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  13. 2026-09-13 16:47 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  14. 2026-09-12 15:01 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  15. 2026-09-11 14:52 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  16. 2026-09-10 09:34 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  17. 2026-09-08 22:00 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  18. 2026-09-07 16:01 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  19. 2026-09-06 13:47 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  20. 2026-09-04 05:06 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  21. 2026-09-02 14:11 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  22. 2026-09-01 13:53 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  23. 2026-09-01 04:39 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  24. 2026-08-30 19:17 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  25. 2026-08-30 01:22 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  26. 2026-08-28 21:41 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  27. 2026-08-27 14:25 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  28. 2026-08-26 14:46 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  29. 2026-08-25 13:48 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  30. 2026-08-23 00:19 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  31. 2026-08-21 23:49 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  32. 2026-08-20 22:55 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  33. 2026-08-19 17:03 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  34. 2026-08-18 13:48 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  35. 2026-08-16 14:56 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  36. 2026-08-16 02:14 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  37. 2026-08-15 01:59 UTCEG score recompute
  38. 2026-08-15 01:59 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  39. 2026-08-15 01:30 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  40. 2026-08-14 21:55 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  41. 2026-08-14 13:49 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  42. 2026-08-14 09:46 UTCEG score recompute
  43. 2026-08-14 09:46 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  44. 2026-08-13 22:00 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  45. 2026-08-13 02:02 UTCEG score recompute
  46. 2026-08-13 02:02 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  47. 2026-08-12 13:50 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  48. 2026-08-11 13:42 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  49. 2026-08-11 07:24 UTCEG score recompute
  50. 2026-08-11 07:24 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  51. 2026-08-11 00:00 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  52. 2026-08-10 09:40 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  53. 2026-08-10 02:18 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  54. 2026-08-09 22:13 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  55. 2026-08-09 18:10 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  56. 2026-08-09 14:05 UTCEG score recompute
  57. 2026-08-09 14:05 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  58. 2026-08-09 13:46 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  59. 2026-08-08 16:37 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  60. 2026-08-08 09:50 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  61. 2026-08-08 05:47 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  62. 2026-08-08 01:43 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  63. 2026-08-07 21:40 UTCEG score recompute
  64. 2026-08-07 21:40 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  65. 2026-08-06 13:46 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  66. 2026-08-06 07:36 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  67. 2026-08-06 03:34 UTCEG score recompute
  68. 2026-08-06 03:33 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8
  69. 2026-08-05 19:17 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  70. 2026-08-04 15:10 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  71. 2026-08-03 10:36 UTCEPSS rescoreEPSS 7.0% · 93rd percentile
  72. 2026-08-03 01:31 UTCGHSA enrichmentGHSA-8p47-wg5j-hm56 · GitHub severity CRITICAL · GitHub CVSS 9.8

Publicly available exploits

(2 references)

Public exploit code is referenced for this CVE (1 Metasploit module), as is 1 Nuclei detection template. A detection template checks whether a system is affected; it is not necessarily exploit code. The fix is not yet in a release, so defenders should restrict or isolate affected systems accordingly until it ships.

  • Metasploitexploit/multi/http/majordomo_console_eval_rce✓ verified
    Published Mar 2, 2026

    MajorDoMo Console Eval Unauthenticated RCE

    Open source ↗
  • Nucleihttp/cves/2026/CVE-2026-27174.yaml
    Published Apr 21, 2026

    MajorDoMo - Unauthenticated RCE

    Open source ↗

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-27174?
CVE-2026-27174 is a critical-severity vulnerability; its CVE record was published on February 18, 2026. MajorDoMo (aka Major Domestic Module) allows unauthenticated remote code execution via the admin panel's PHP console feature. An include order bug in modules/panel.class.php causes execution to continue past a redirect() call that lacks an exit statement, allowing unauthenticated requests to reach…
When was CVE-2026-27174 made public?
CVE-2026-27174 was made public on February 17, 2026: that is the date its CVE record's CNA, VulnCheck, gives for when the vulnerability was made public. The CVE record itself was published on February 18, 2026. EchelonGraph's copy of the record carries a last-modified date of June 23, 2026; the record at its source may have been updated since.
Is CVE-2026-27174 actively exploited?
CVE-2026-27174 is not currently on CISA's Known Exploited Vulnerabilities catalog. EchelonGraph's EG-KEV model places it in Tier 2 (Weaponized), which is not evidence of exploitation: a Metasploit module exists for it. EchelonGraph does not test whether exploit code works. FIRST EPSS estimates a 5.7% probability of exploitation in the next 30 days (92nd percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-27174?
CVE-2026-27174 has a CVSS base score of 9.8 (the CNA's own assessment, by vulncheck; NVD's own analysis pending).
How do I remediate CVE-2026-27174?
An upstream fix for CVE-2026-27174 has been merged but is not yet in a tagged release. Until it ships, restrict network exposure of the affected system or apply the vendor's mitigation, then update to the release that contains the fix.

Dependency Blast Radius

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