CVE-2026-8155

MEDIUMPre-NVD 5.45.4
EchelonGraph scoreMEDIUM confidence

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

Score 5.4 from GitHub Security Advisory published 2026-07-31. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 5.4; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: CISA-ADP (Vulnrichment) CVSS v3.1, EPSS, GitHub Security Advisory
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictPlan mitigationRemediate within your standard update timelines (the SSVC decision on this page).
  • CISA's Vulnrichment rates exploitation as PoC; EchelonGraph holds no exploit-code reference for it
CISA-KEV: Not listedEPSS PROB: 0.2%CVSS: 5.4Exploit: No code on recordExposed services: Not assessed

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

The BuddyPress WordPress plugin before 14.5.0 does not properly enforce authorization on its private messaging endpoints, allowing any authenticated user (Subscriber+) to read, modify, or delete other users' private messages.

CVSS v3
5.4
EG Score
5.4MEDIUMmedium confidence
EG Risk
40
EG Risk 40/100

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)
Severity54% × 45%
The EG Score, 5.4 of 10.
Exploitation40% × 40%
EchelonGraph's fixed weight for EG-KEV Tier 3 (Elevated): a constant, not a probability.
Automatability0% × 15%
CISA's SSVC Automatable value: no (Vulnrichment).
SSVC (CISA's decision table, applied by EchelonGraph): Track at low or medium mission impact; Track* at high (mission-essential systems).
Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines, and watch the vendor's advisory for the fix.
EPSS PROB
0.2%
EPSS %ILE
13th
KEV
Not listed

SSVC (CISA's decision table, applied by EchelonGraph)Track at low or medium mission impact; Track* 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, and watch the vendor's advisory for the fix.

Exploitation public PoC (CISA Vulnrichment) · Automatable no (CISA Vulnrichment) · Technical impact partial (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)60 days if the affected system is publicly exposed; Fix on system upgrade if it is not.

In CISA KEV no (CISA's KEV catalog) · Automatable no (CISA Vulnrichment) · Technical impact partial (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

July 31, 2026

Last Modified

August 26, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
No fix on record yet.
Web page

BuddyPress < 14.5.0 – Subscriber+ Private Messages Disclosure via IDOR | CVE 2026-8155 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/b7dd9cbf-b46b-49ee-84a0-6b054676fccb/

Vendor Advisories for CVE-2026-8155(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 14× in last 7d / 61× 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 98 of 182 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. 2 repeat rows among the latest 100 are merged into the row they repeat. The 84 oldest rows on record are not shown and were not checked, so the counts can still include repeats.

  1. 2026-10-11 19:20 UTCEG score recompute
  2. 2026-10-11 16:37 UTCEG score recompute
  3. 2026-10-11 13:55 UTCEG score recompute
  4. 2026-10-11 13:49 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  5. 2026-10-10 20:00 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  6. 2026-10-09 20:07 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  7. 2026-10-08 17:13 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  8. 2026-10-07 23:48 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  9. 2026-10-06 23:51 UTCEG score recompute
  10. 2026-10-06 23:51 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  11. 2026-10-06 15:18 UTCEPSS rescoreEPSS 0.2% · 13th percentile
  12. 2026-10-05 19:57 UTCEG score recompute
  13. 2026-10-05 19:57 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  14. 2026-10-05 17:44 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  15. 2026-10-04 23:22 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  16. 2026-10-04 06:33 UTCEG score recompute
  17. 2026-10-04 06:33 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  18. 2026-10-02 16:53 UTCEG score recompute
  19. 2026-10-02 16:53 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  20. 2026-10-01 19:51 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  21. 2026-10-01 02:49 UTCEG score recompute
  22. 2026-10-01 02:49 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  23. 2026-09-30 15:04 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  24. 2026-09-29 06:51 UTCEG score recompute
  25. 2026-09-29 06:50 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
Show 73 more
  1. 2026-09-28 13:52 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  2. 2026-09-27 18:57 UTCEG score recompute
  3. 2026-09-27 18:57 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  4. 2026-09-27 13:49 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  5. 2026-09-26 15:59 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  6. 2026-09-25 04:53 UTCEG score recompute
  7. 2026-09-25 04:53 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  8. 2026-09-24 14:04 UTCEPSS rescoreEPSS 0.2% · 12th percentile
  9. 2026-09-23 16:48 UTCEG score recompute
  10. 2026-09-23 16:48 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  11. 2026-09-22 16:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  12. 2026-09-22 13:25 UTCEG score recompute
  13. 2026-09-22 13:25 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  14. 2026-09-21 21:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  15. 2026-09-20 20:16 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  16. 2026-09-20 11:09 UTCEG score recompute
  17. 2026-09-20 11:09 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  18. 2026-09-19 08:03 UTCEG score recompute
  19. 2026-09-19 08:03 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  20. 2026-09-18 19:28 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  21. 2026-09-18 07:04 UTCEG score recompute
  22. 2026-09-18 07:04 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  23. 2026-09-17 19:32 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  24. 2026-09-17 07:08 UTCEG score recompute
  25. 2026-09-17 07:08 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  26. 2026-09-16 14:09 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  27. 2026-09-16 07:02 UTCEG score recompute
  28. 2026-09-16 07:02 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  29. 2026-09-16 05:15 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  30. 2026-09-15 07:06 UTCEG score recompute
  31. 2026-09-15 07:06 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  32. 2026-09-15 03:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  33. 2026-09-14 06:54 UTCEG score recompute
  34. 2026-09-14 06:53 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  35. 2026-09-13 16:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  36. 2026-09-13 06:58 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  37. 2026-09-12 06:56 UTCEG score recompute
  38. 2026-09-12 06:56 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  39. 2026-09-11 14:53 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  40. 2026-09-11 07:00 UTCEG score recompute
  41. 2026-09-11 07:00 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  42. 2026-09-10 07:04 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  43. 2026-09-09 07:07 UTCEG score recompute
  44. 2026-09-09 07:07 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  45. 2026-09-08 22:01 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  46. 2026-09-07 19:38 UTCEG score recompute
  47. 2026-09-07 19:38 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  48. 2026-09-06 13:48 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  49. 2026-09-06 11:26 UTCEG score recompute
  50. 2026-09-06 11:26 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  51. 2026-09-05 15:31 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  52. 2026-09-05 11:26 UTCEG score recompute
  53. 2026-09-05 11:26 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  54. 2026-09-04 11:21 UTCEG score recompute
  55. 2026-09-04 11:21 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  56. 2026-09-04 05:07 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  57. 2026-09-03 09:13 UTCEG score recompute
  58. 2026-09-03 09:13 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  59. 2026-09-02 14:12 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  60. 2026-09-01 23:23 UTCEG score recompute
  61. 2026-09-01 23:23 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  62. 2026-09-01 13:54 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  63. 2026-09-01 04:40 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  64. 2026-08-31 23:27 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  65. 2026-08-30 22:20 UTCEG score recompute
  66. 2026-08-30 22:20 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  67. 2026-08-30 19:17 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  68. 2026-08-30 01:22 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  69. 2026-08-29 22:24 UTCEG score recompute
  70. 2026-08-29 22:24 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4
  71. 2026-08-28 21:42 UTCEPSS rescoreEPSS 0.1% · 3rd percentile
  72. 2026-08-27 20:47 UTCEG score recompute
  73. 2026-08-27 20:47 UTCGHSA enrichmentGHSA-6pp9-x443-r8xw · GitHub CVSS 5.4

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8155?
CVE-2026-8155 is a medium-severity vulnerability; its CVE record was published on July 31, 2026. The BuddyPress WordPress plugin before 14.5.0 does not properly enforce authorization on its private messaging endpoints, allowing any authenticated user (Subscriber+) to read, modify, or delete other users' private messages.
When was the CVE record for CVE-2026-8155 published?
The CVE record for CVE-2026-8155 was published on July 31, 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 26, 2026; the record at its source may have been updated since.
Is CVE-2026-8155 actively exploited?
CVE-2026-8155 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.2% probability of exploitation in the next 30 days (13th percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-8155?
CVE-2026-8155 has a CVSS v3.1 base score of 5.4 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-8155?
No fix for CVE-2026-8155 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-2026-8155 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

Explore the affected products and dependency analysis for CVE-2026-8155

Explore →

Is Your Infrastructure Affected by CVE-2026-8155?

EchelonGraph automatically scans your cloud infrastructure and maps CVE exposure using blast radius analysis.

Book a Demo →Browse All CVEs