CVE-2026-53673

HIGHPre-NVD 8.18.1—
EchelonGraph scoreMEDIUM confidence

Score 8.1 from GitHub Security Advisory (severity: HIGH) published 2026-06-10. a secondary CVSS source baseline 8.1; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: epss, ghsa, secondary
8.1EG
EchelonGraph verdictPlan a fixSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 8.1Exploit: None knownExposed: 0

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

BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a user_id parameter in the request. Attackers can pass another user's identifier to the get_item_permissions_check method, which validates the supplied user_id instead of the logged-in user and is reused by the update and delete handlers, to read, reply to, or delete any user's private messages.

CVSS v3
8.1
EG Score
8.1(medium)
EG Risk
41(Track)
EG Risk 41/100SSVC: 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
Severity81% × 45%
Exploitation0% × 40%
Automatability30% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
30%
KEV
Not listed

Published

June 10, 2026

Last Modified

July 23, 2026

Advisory Details (3)

Auto-updated Jun 10, 2026
No patch confirmed yet.
generic

BuddyPress 14.4.0 Private Message IDOR via REST API user_id Parameter | Advisories | VulnCheck

https://www.vulncheck.com/advisories/buddypress-private-message-idor-via-rest-api-user-id-parameter
generic

BuddyPress – WordPress plugin | WordPress.org

https://wordpress.org/plugins/buddypress/
generic

BuddyPress.org

https://buddypress.org/

Vendor Advisories for CVE-2026-53673(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 8× in last 7d / 78× 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 226 total refreshes for this CVE.

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

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-53673?
CVE-2026-53673 is a high vulnerability published on June 10, 2026. BuddyPress 14.4.0 contains an insecure direct object reference vulnerability in the messages REST API that allows authenticated attackers to access arbitrary private message threads by supplying a userid parameter in the request. Attackers can pass another user's identifier to the…
When was CVE-2026-53673 disclosed?
CVE-2026-53673 was first published in the National Vulnerability Database on June 10, 2026, with the most recent update on July 23, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-53673 actively exploited?
CVE-2026-53673 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0% probability of exploitation in the next 30 days, which ranks it in the top 70.0% of all scored CVEs.
What is the CVSS score of CVE-2026-53673?
CVE-2026-53673 has a CVSS v3 base score of 8.1 (NVD).
How do I remediate CVE-2026-53673?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-53673, 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.

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