CVE-2026-72831

HIGHPre-NVD 8.88.8—
EchelonGraph scoreMEDIUM confidence

Score 8.8 from GitHub Security Advisory (severity: HIGH) published 2026-08-14. A secondary CVSS source baseline 8.8; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
Trending — 3 sources updated this weekElevated
8.8EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.6%CVSS: 8.8Exploit: Elevated riskExposed services: Not assessed

A fix is available — apply it.

The Flex Objects plugin (through 1.4.6, tested with Grav 2.0.11) contains an incorrect authorization vulnerability in its Flex Objects API. FlexApiController::update() checks only the general Flex directory permission and does not apply the additional target/field/super-admin checks enforced by the dedicated Users and Groups API controllers. An authenticated account with api.access, admin.login, and users.update permissions (but without api.users.write or admin.super) can use the generic /api/v1/flex-objects/user-accounts endpoint to change a super administrator's password, or the /api/v1/flex-objects/user-groups endpoint to grant its group admin.super, resulting in full site takeover. Fixed in Flex Objects 1.4.7.

CVSS v3
8.8
EG Score
8.8HIGHmedium confidence
EG Risk
56
EG Risk 56/100CISA 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
Severity88% × 45%
Exploitation40% × 40%
Automatability0% × 15%
CISA SSVC: Track at low, Track* at medium and Attend at high mission impact.
Action: A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.
EPSS PROB
0.6%
EPSS %ILE
44th
KEV
Not listed

CISA SSVCTrack at low, Track* at medium and Attend at high mission impact.

A fix is available. Apply it within your standard update timelines at low or medium mission impact and sooner than that at high.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact total (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 14, 2026

Last Modified

August 31, 2026

Advisory Details (3)

Auto-updated Aug 14, 2026
Patch available. Sources: github, github_commit.
generic

Grav through 2.0.11 Authentication Bypass via Flex Objects | Advisories | VulnCheck

https://www.vulncheck.com/advisories/grav-through-authentication-bypass-via-flex-objects
github_commit Patch Available

commit ad9709f865b0 (getgrav/grav)

Patch available: getgrav/grav 2.0.11 (contains commit ad9709f865b0)

https://github.com/getgrav/grav/commit/ad9709f865b09b68798fb1ac375b484a8cc1d892
github Patch Available

Low-privileged user can change super-admin password through Flex Objects · Advisory · getgrav/grav · GitHub

https://github.com/getgrav/grav/security/advisories/GHSA-pc8m-jxvh-vmrc

Vendor Advisories for CVE-2026-72831(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 / 92× 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.

Showing the most recent 100 of 183 total refreshes for this CVE.

  1. 2026-10-05 14:34 UTCEG score recompute
  2. 2026-10-05 14:34 UTCGHSA enrichment
  3. 2026-10-04 23:22 UTCEPSS rescore
  4. 2026-10-04 22:13 UTCGHSA enrichment
  5. 2026-10-04 08:11 UTCGHSA enrichment
  6. 2026-10-03 19:42 UTCEG score recompute
  7. 2026-10-03 19:42 UTCGHSA enrichment
  8. 2026-10-03 14:26 UTCEPSS rescore
  9. 2026-10-02 19:51 UTCEG score recompute
  10. 2026-10-02 19:51 UTCGHSA enrichment
  11. 2026-10-02 07:22 UTCEG score recompute
  12. 2026-10-02 07:22 UTCGHSA enrichment
  13. 2026-10-01 19:50 UTCEPSS rescore
  14. 2026-10-01 10:10 UTCGHSA enrichment
  15. 2026-09-30 21:41 UTCEG score recompute
  16. 2026-09-30 21:41 UTCGHSA enrichment
  17. 2026-09-29 02:59 UTCEG score recompute
  18. 2026-09-29 02:59 UTCGHSA enrichment
  19. 2026-09-28 13:52 UTCEPSS rescore
  20. 2026-09-28 12:56 UTCGHSA enrichment
  21. 2026-09-28 00:27 UTCEG score recompute
  22. 2026-09-28 00:27 UTCGHSA enrichment
  23. 2026-09-27 13:48 UTCEPSS rescore
  24. 2026-09-27 09:39 UTCEG score recompute
  25. 2026-09-27 09:39 UTCGHSA enrichment
Show 75 more
  1. 2026-09-26 15:59 UTCEPSS rescore
  2. 2026-09-25 03:23 UTCEG score recompute
  3. 2026-09-25 03:23 UTCGHSA enrichment
  4. 2026-09-24 10:22 UTCGHSA enrichment
  5. 2026-09-23 21:53 UTCEG score recompute
  6. 2026-09-23 21:53 UTCGHSA enrichment
  7. 2026-09-23 17:54 UTCEPSS rescore
  8. 2026-09-23 09:25 UTCGHSA enrichment
  9. 2026-09-22 20:56 UTCEG score recompute
  10. 2026-09-22 20:56 UTCGHSA enrichment
  11. 2026-09-22 08:14 UTCEG score recompute
  12. 2026-09-22 08:14 UTCGHSA enrichment
  13. 2026-09-21 21:09 UTCEPSS rescore
  14. 2026-09-21 19:46 UTCGHSA enrichment
  15. 2026-09-21 04:14 UTCEG score recompute
  16. 2026-09-21 04:13 UTCGHSA enrichment
  17. 2026-09-20 20:16 UTCEPSS rescore
  18. 2026-09-20 15:40 UTCGHSA enrichment
  19. 2026-09-20 03:09 UTCEG score recompute
  20. 2026-09-20 03:09 UTCGHSA enrichment
  21. 2026-09-19 14:37 UTCGHSA enrichment
  22. 2026-09-19 01:50 UTCEG score recompute
  23. 2026-09-19 01:50 UTCGHSA enrichment
  24. 2026-09-18 19:28 UTCEPSS rescore
  25. 2026-09-18 13:15 UTCGHSA enrichment
  26. 2026-09-18 00:46 UTCEG score recompute
  27. 2026-09-18 00:46 UTCGHSA enrichment
  28. 2026-09-17 12:18 UTCGHSA enrichment
  29. 2026-09-16 23:49 UTCEG score recompute
  30. 2026-09-16 23:49 UTCGHSA enrichment
  31. 2026-09-16 14:08 UTCEPSS rescore
  32. 2026-09-16 05:15 UTCEPSS rescore
  33. 2026-09-16 01:04 UTCGHSA enrichment
  34. 2026-09-15 12:08 UTCEG score recompute
  35. 2026-09-15 12:08 UTCGHSA enrichment
  36. 2026-09-15 03:12 UTCEPSS rescore
  37. 2026-09-14 22:38 UTCGHSA enrichment
  38. 2026-09-14 10:09 UTCGHSA enrichment
  39. 2026-09-13 21:35 UTCEG score recompute
  40. 2026-09-13 21:35 UTCGHSA enrichment
  41. 2026-09-13 09:06 UTCGHSA enrichment
  42. 2026-09-12 20:38 UTCEG score recompute
  43. 2026-09-12 20:38 UTCGHSA enrichment
  44. 2026-09-12 15:02 UTCEPSS rescore
  45. 2026-09-12 08:09 UTCGHSA enrichment
  46. 2026-09-11 19:40 UTCEG score recompute
  47. 2026-09-11 19:40 UTCGHSA enrichment
  48. 2026-09-11 14:53 UTCEPSS rescore
  49. 2026-09-11 07:11 UTCGHSA enrichment
  50. 2026-09-10 18:42 UTCEG score recompute
  51. 2026-09-10 18:42 UTCGHSA enrichment
  52. 2026-09-10 09:35 UTCEPSS rescore
  53. 2026-09-10 06:13 UTCGHSA enrichment
  54. 2026-09-09 17:40 UTCGHSA enrichment
  55. 2026-09-09 04:50 UTCEG score recompute
  56. 2026-09-09 04:50 UTCGHSA enrichment
  57. 2026-09-08 22:01 UTCEPSS rescore
  58. 2026-09-08 07:40 UTCGHSA enrichment
  59. 2026-09-07 19:08 UTCEG score recompute
  60. 2026-09-07 19:08 UTCGHSA enrichment
  61. 2026-09-07 06:40 UTCGHSA enrichment
  62. 2026-09-06 17:48 UTCEG score recompute
  63. 2026-09-06 17:48 UTCGHSA enrichment
  64. 2026-09-06 13:48 UTCEPSS rescore
  65. 2026-09-06 05:19 UTCGHSA enrichment
  66. 2026-09-05 16:47 UTCEG score recompute
  67. 2026-09-05 16:47 UTCGHSA enrichment
  68. 2026-09-05 04:14 UTCGHSA enrichment
  69. 2026-09-04 15:46 UTCEG score recompute
  70. 2026-09-04 15:46 UTCGHSA enrichment
  71. 2026-09-04 05:07 UTCEPSS rescore
  72. 2026-09-04 03:13 UTCGHSA enrichment
  73. 2026-09-03 14:03 UTCGHSA enrichment
  74. 2026-09-03 01:25 UTCEG score recompute
  75. 2026-09-03 01:25 UTCGHSA enrichment

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Frequently asked(5)

What is CVE-2026-72831?
CVE-2026-72831 is a high vulnerability published on August 14, 2026. The Flex Objects plugin (through 1.4.6, tested with Grav 2.0.11) contains an incorrect authorization vulnerability in its Flex Objects API. FlexApiController::update() checks only the general Flex directory permission and does not apply the additional target/field/super-admin checks enforced by the…
When was CVE-2026-72831 disclosed?
CVE-2026-72831 was first published on August 14, 2026, with the most recent update on August 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-72831 actively exploited?
CVE-2026-72831 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.6% probability of exploitation in the next 30 days (44th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-72831?
CVE-2026-72831 has a CVSS base score of 8.8 (a secondary CVSS source that NVD displays; NVD's own analysis pending).
How do I remediate CVE-2026-72831?
A fix for CVE-2026-72831 is available: update to the fixed version the vendor names in its advisory. The vendor advisories EchelonGraph has for CVE-2026-72831 are linked in the Vendor Advisories panel on this page.

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