CVE-2026-72699

MEDIUMPre-NVD 5.35.3—
EchelonGraph scoreMEDIUM confidence

Score 5.3 from GitHub Security Advisory (severity: CRITICAL) published 2026-08-25. A secondary CVSS source baseline 5.3; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
5.3EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 5.3Exploit: Elevated riskExposed services: Not assessed

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

The Grav Login plugin (getgrav/grav-plugin-login) before 3.9.1 is vulnerable to email address enumeration. The register() method in classes/Login.php throws a distinct exception (EMAIL_NOT_AVAILABLE) when a submitted email address already belongs to an existing account, while allowing registration to proceed otherwise. Because the registration endpoint has no rate limiting, an attacker can enumerate which email addresses have accounts on the site, one guess per request.

CVSS v3
5.3
EG Score
5.3MEDIUMmedium confidence
EG Risk
55
EG Risk 55/100CISA SSVC

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
Severity53% × 45%
Exploitation40% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. 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, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
25th
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend at high (mission-essential systems).

No fix is confirmed yet. 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, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable yes (CISA Vulnrichment) · Technical impact partial (CISA Vulnrichment). Mission impact is CISA's Mission & Well-being decision point, and only you can judge it: high means the affected system is essential to your organisation's mission, or its compromise could cause irreversible harm to people. CISA's decision table

Published

August 25, 2026

Last Modified

August 31, 2026

Advisory Details (2)

Auto-updated Aug 25, 2026
🔬 Proof of concept available. No fix on record yet. Sources: github.
generic

Grav Login Plugin before 3.9.1 Email Enumeration via Registration | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-login-plugin-before-email-enumeration-via-registration
githubMentions a patch (unverified)🟡 PoC Available

User registration discloses whether an email address is already registered (email enumeration) · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-crh8-xm27-j9g9

Vendor Advisories for CVE-2026-72699(1)

These vendors published their own advisory mentioning this CVE — often with vendor-specific remediation steps + affected product lists not in NVD.

Weakness Classification(1)

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

Data Freshness Timeline

(refreshed 18× in last 7d / 74× 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 99 of 125 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. 1 repeat row among the latest 100 is merged into the row it repeats. The 26 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  2. 2026-10-10 12:25 UTCEG score recompute
  3. 2026-10-10 12:25 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  4. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  5. 2026-10-09 07:26 UTCEG score recompute
  6. 2026-10-09 07:26 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  8. 2026-10-08 05:45 UTCEG score recompute
  9. 2026-10-08 05:45 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  10. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  11. 2026-10-07 04:13 UTCEG score recompute
  12. 2026-10-07 04:13 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  13. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  14. 2026-10-06 02:43 UTCEG score recompute
  15. 2026-10-06 02:43 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  16. 2026-10-05 17:43 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  17. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  18. 2026-10-04 20:39 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  19. 2026-10-03 16:29 UTCEG score recompute
  20. 2026-10-03 16:29 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  21. 2026-10-03 14:26 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  22. 2026-10-02 09:57 UTCEG score recompute
  23. 2026-10-02 09:57 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  24. 2026-10-01 19:50 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  25. 2026-10-01 08:26 UTCEG score recompute
Show 74 more
  1. 2026-10-01 08:26 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  2. 2026-09-30 06:56 UTCEG score recompute
  3. 2026-09-30 06:56 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  4. 2026-09-29 01:37 UTCEG score recompute
  5. 2026-09-29 01:37 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  6. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  7. 2026-09-27 23:52 UTCEG score recompute
  8. 2026-09-27 23:52 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  9. 2026-09-27 13:48 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  10. 2026-09-26 22:13 UTCEG score recompute
  11. 2026-09-26 22:13 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  12. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.3% · 25th percentile
  13. 2026-09-25 08:23 UTCEG score recompute
  14. 2026-09-25 08:23 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  15. 2026-09-24 06:49 UTCEG score recompute
  16. 2026-09-24 06:49 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  17. 2026-09-23 17:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  18. 2026-09-23 05:18 UTCEG score recompute
  19. 2026-09-23 05:18 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  20. 2026-09-22 03:48 UTCEG score recompute
  21. 2026-09-22 03:47 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  22. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  23. 2026-09-21 02:17 UTCEG score recompute
  24. 2026-09-21 02:17 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  25. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  26. 2026-09-20 00:46 UTCEG score recompute
  27. 2026-09-20 00:46 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  28. 2026-09-18 23:16 UTCEG score recompute
  29. 2026-09-18 23:16 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  30. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  31. 2026-09-17 21:46 UTCEG score recompute
  32. 2026-09-17 21:46 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  33. 2026-09-16 20:15 UTCEG score recompute
  34. 2026-09-16 20:15 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  35. 2026-09-16 14:08 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  36. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  37. 2026-09-15 18:44 UTCEG score recompute
  38. 2026-09-15 18:44 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  39. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  40. 2026-09-14 16:36 UTCEG score recompute
  41. 2026-09-14 16:36 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  42. 2026-09-13 15:04 UTCEG score recompute
  43. 2026-09-13 15:04 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  44. 2026-09-12 15:02 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  45. 2026-09-12 13:34 UTCEG score recompute
  46. 2026-09-12 13:34 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  47. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  48. 2026-09-11 12:04 UTCEG score recompute
  49. 2026-09-11 12:04 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  50. 2026-09-10 10:33 UTCEG score recompute
  51. 2026-09-10 10:33 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  52. 2026-09-10 09:35 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  53. 2026-09-09 09:01 UTCEG score recompute
  54. 2026-09-09 09:01 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  55. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  56. 2026-09-08 07:31 UTCEG score recompute
  57. 2026-09-08 07:31 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  58. 2026-09-07 05:59 UTCEG score recompute
  59. 2026-09-07 05:59 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  60. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  61. 2026-09-06 04:29 UTCEG score recompute
  62. 2026-09-06 04:29 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  63. 2026-09-05 02:59 UTCEG score recompute
  64. 2026-09-05 02:59 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  65. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  66. 2026-09-04 01:26 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  67. 2026-09-02 23:55 UTCEG score recompute
  68. 2026-09-02 23:55 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  69. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  70. 2026-09-01 22:25 UTCEG score recompute
  71. 2026-09-01 22:25 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3
  72. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  73. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.2% · 10th percentile
  74. 2026-08-31 20:55 UTCGHSA enrichmentGHSA-55hc-4r2f-h6wr · GitHub severity CRITICAL · GitHub CVSS 5.3

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-72699?
CVE-2026-72699 is a medium vulnerability published on August 25, 2026. The Grav Login plugin (getgrav/grav-plugin-login) before 3.9.1 is vulnerable to email address enumeration. The register() method in classes/Login.php throws a distinct exception (EMAILNOTAVAILABLE) when a submitted email address already belongs to an existing account, while allowing registration to…
When was the CVE record for CVE-2026-72699 published?
The CVE record for CVE-2026-72699 was published on August 25, 2026. That is the record's publication date; the vulnerability itself may have been made public earlier. EchelonGraph's copy of the record carries a last-modified date of August 31, 2026; the record at its source may have been updated since.
Is CVE-2026-72699 actively exploited?
CVE-2026-72699 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (25th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72699?
CVE-2026-72699 has a CVSS base score of 5.3 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72699?
No fix for CVE-2026-72699 is confirmed yet. Until one is published, restrict network exposure of the affected system or apply the vendor's mitigation — for example, keep it off the internet or limit it to trusted networks — and watch the vendor's advisory for the fix. The vendor advisories EchelonGraph has for CVE-2026-72699 are linked in the Vendor Advisories panel on this page.

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