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CVE-2026-53673 high CVSS 8.1

Vulnerability in buddypress/buddypress (CVE-2026-53673)

Summary

Vulnerability in buddypress/buddypress (CVE-2026-53673). Confidential information can be exposed externally. Mitigation: upgrade to 14.5.0 or later.

Original description

The description as published by the source.

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.

Source: GitHub Security Advisories (Global) NVD GitHub Advisory

Auto-generated summary

Assembled by SecPulse from the source data (CVSS, CWE, affected versions) using templates — no AI involved. Check the original description and references below for exact details.

A vulnerability tracked as CVE-2026-53673 has been found in buddypress/buddypress.
Confidential information can be exposed externally. CVSS score: 8.1/10.
What to do: upgrade buddypress/buddypress to 14.5.0 or later.
If unsure, ask your IT team or search "buddypress/buddypress CVE-2026-53673" on the vendor's site.

CVE-2026-53673 (buddypress/buddypress) — CWE-639 / CVSS v3 8.1
Attack vector: remote (network-reachable) / no user interaction
Patched: 14.5.0 — apply immediately
Plan: 1) Audit SBOM/dependencies, 2) Stage→prod upgrade, 3) Add WAF/proxy monitoring on affected endpoints, 4) Hunt IOCs in logs.
Refs: see the GHSA / vendor advisory / patched release linked on this page.

❓ What is the problem

A vulnerability (CWE-639) exists in buddypress/buddypress.

📍 Affected scope

Check the vendor advisory for the affected versions of buddypress/buddypress.

🔥 Severity

Severity: High (CVSS 8.1/10). Confidential information can be exposed externally.

🔧 How to fix

Update to 14.5.0.

🛡️ Workaround

Until the patch is applied: disable the affected feature, apply WAF rules, or restrict access via network ACLs.

🔍 Detection

Search webserver/proxy logs for unusual request patterns matching this CVE's known IOCs. Run grep -r 'buddypress/buddypress' . against your dependency files (package-lock.json, requirements.txt, go.sum) to find affected services.

Response actions

Concrete steps and command examples for SOC/SRE teams to execute in order

  1. 1
    Identify exposure identify 
    grep -r 'buddypress/buddypress' . | grep -v node_modules

    リポジトリと本番環境の依存ファイル (package-lock.json / requirements.txt / go.sum / Gemfile.lock 等) で buddypress/buddypress を grep し、稼働しているサービス・バージョンを把握する。

  2. 2
    Apply patch patch 
    Upgrade buddypress/buddypress to 14.5.0

    ステージング環境で 14.5.0 に上げて回帰テスト → 本番反映。回帰テストはアプリの主要ハッピーパスを含めること。

  3. 3
    Post-deployment verification verify 
    Confirm patched version is live in production

    パッチ適用後、ステージングで PoC または同等の悪用パターンを再現して脆弱性が閉じたことを確認。本番ではアクセスログ・WAF でアラート再発が無いか継続監視。

Affected packages

composer buddypress/buddypress
[{"type":"ECOSYSTEM","events":[{"introduced":"0"},{"fixed":"14.5.0"}]}]

References

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