CVE-2026-8155

MEDIUMPre-NVD 5.45.4—
EchelonGraph scoreHIGH confidence

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, epss, ghsa
Trending — 3 sources updated this weekElevated
5.4EG
EchelonGraph verdictMonitorLow exploitation likelihood right now — keep watching.
  • Lower severity and no public exploit yet
CISA-KEV: Not listedEPSS PROB: 0%CVSS: 5.4Exploit: Elevated riskExposed: 0

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

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
5.4(high)
EG Risk
40(Track)
EG Risk 40/100SSVC: 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
Severity54% × 45%
Exploitation40% × 40%
Automatability0% × 15%
Action: Routine — remediate on your standard cadence.
EPSS PROB
0%
EPSS %ILE
4%
KEV
Not listed

Published

July 31, 2026

Last Modified

July 31, 2026

Advisory Details (1)

Auto-updated Jul 31, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

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 22× in last 7d / 66× 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.

  1. 2026-08-20 22:56 UTCEPSS rescore
  2. 2026-08-20 19:27 UTCGHSA enrichment
  3. 2026-08-19 19:31 UTCEG score recompute
  4. 2026-08-19 19:31 UTCGHSA enrichment
  5. 2026-08-19 17:04 UTCEPSS rescore
  6. 2026-08-18 19:36 UTCEG score recompute
  7. 2026-08-18 19:36 UTCGHSA enrichment
  8. 2026-08-18 13:49 UTCEPSS rescore
  9. 2026-08-18 13:49 UTCEPSS rescore
  10. 2026-08-17 19:40 UTCEG score recompute
  11. 2026-08-17 19:40 UTCGHSA enrichment
  12. 2026-08-17 13:47 UTCEPSS rescore
  13. 2026-08-16 17:41 UTCEG score recompute
  14. 2026-08-16 17:41 UTCGHSA enrichment
  15. 2026-08-16 14:56 UTCEPSS rescore
  16. 2026-08-16 14:56 UTCEPSS rescore
  17. 2026-08-16 02:15 UTCEPSS rescore
  18. 2026-08-15 17:42 UTCEG score recompute
  19. 2026-08-15 17:42 UTCGHSA enrichment
  20. 2026-08-15 01:31 UTCEPSS rescore
  21. 2026-08-14 17:46 UTCEG score recompute
  22. 2026-08-14 17:46 UTCGHSA enrichment
  23. 2026-08-13 22:00 UTCEPSS rescore
  24. 2026-08-13 17:46 UTCGHSA enrichment
  25. 2026-08-12 17:50 UTCEG score recompute
Show 41 more
  1. 2026-08-12 17:50 UTCGHSA enrichment
  2. 2026-08-12 13:51 UTCEPSS rescore
  3. 2026-08-11 17:54 UTCEG score recompute
  4. 2026-08-11 17:54 UTCGHSA enrichment
  5. 2026-08-11 13:43 UTCEPSS rescore
  6. 2026-08-10 17:59 UTCGHSA enrichment
  7. 2026-08-09 17:43 UTCEG score recompute
  8. 2026-08-09 17:43 UTCGHSA enrichment
  9. 2026-08-09 13:47 UTCEPSS rescore
  10. 2026-08-08 17:48 UTCEG score recompute
  11. 2026-08-08 17:48 UTCGHSA enrichment
  12. 2026-08-08 16:37 UTCEPSS rescore
  13. 2026-08-07 17:52 UTCEG score recompute
  14. 2026-08-07 17:52 UTCGHSA enrichment
  15. 2026-08-06 17:56 UTCEG score recompute
  16. 2026-08-06 17:56 UTCGHSA enrichment
  17. 2026-08-06 13:47 UTCEPSS rescore
  18. 2026-08-05 19:17 UTCEPSS rescore
  19. 2026-08-05 19:17 UTCEPSS rescore
  20. 2026-08-05 18:00 UTCGHSA enrichment
  21. 2026-08-04 18:05 UTCEG score recompute
  22. 2026-08-04 18:04 UTCGHSA enrichment
  23. 2026-08-04 15:10 UTCEPSS rescore
  24. 2026-08-04 10:39 UTCEPSS rescore
  25. 2026-08-03 18:08 UTCEG score recompute
  26. 2026-08-03 18:08 UTCGHSA enrichment
  27. 2026-08-03 10:36 UTCEPSS rescore
  28. 2026-08-02 18:11 UTCEG score recompute
  29. 2026-08-02 18:11 UTCGHSA enrichment
  30. 2026-08-02 02:27 UTCEPSS rescore
  31. 2026-08-01 18:15 UTCEG score recompute
  32. 2026-08-01 18:15 UTCGHSA enrichment
  33. 2026-08-01 04:16 UTCEPSS rescore
  34. 2026-07-31 18:20 UTCEG score recompute
  35. 2026-07-31 18:20 UTCGHSA enrichment
  36. 2026-07-31 18:04 UTCEG score recompute▲ 5.40
  37. 2026-07-31 18:04 UTCGHSA enrichment
  38. 2026-07-31 18:03 UTCMITRE cvelistV5CVSS v3 → 5.4 · severity → MEDIUM
  39. 2026-07-31 07:24 UTCNVD update
  40. 2026-07-31 06:30 UTCEG score recompute
  41. 2026-07-31 06:28 UTCMITRE cvelistV5first tracked

Related CVEs(same CWE)

Frequently asked(5)

What is CVE-2026-8155?
CVE-2026-8155 is a medium vulnerability 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 CVE-2026-8155 disclosed?
CVE-2026-8155 was first published in the National Vulnerability Database on July 31, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-8155 actively exploited?
CVE-2026-8155 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 96.4% of all 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?
Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2026-8155, 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.

Dependency Blast Radius

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