CVE-2026-101148

CRITICALPre-NVD 10.010.0—
EchelonGraph scoreHIGH confidence

Score 10.0 from GitHub Security Advisory (severity: CRITICAL) published 2026-10-01. CISA-ADP (Vulnrichment) CVSS v3.1 baseline 10.0; sources differ by 0.0.

Triggered by: GitHub Security Advisory CVSS
Sources: cisa-adp, epss, ghsa
Trending — 5 sources updated this week
10.0EG
EchelonGraph verdictPlan mitigationSerious severity, but no confirmed exploitation yet.
  • High severity, but no confirmed exploitation yet
CISA-KEV: Not listedEPSS PROB: 0.3%CVSS: 10.0Exploit: None knownExposed services: Not assessed

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

The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to delete arbitrary files on the server, leading to sensitive data disclosure and site takeover.

The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 has been closed on WordPress.org since July 2024 and no fixed version is available. Remove it from any site where it is installed.

CVSS v3
10.0
EG Score
10.0CRITICALhigh confidence
EG Risk
60
EG Risk 60/100CISA 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
Severity100% × 45%
Exploitation0% × 40%
Automatability100% × 15%
CISA SSVC: Track at low or medium mission impact; Attend at high (mission-essential systems).
Action: No fix is confirmed yet. Restrict network exposure of the affected system or apply the vendor's mitigation within your standard update timelines at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.
EPSS PROB
0.3%
EPSS %ILE
21st
KEV
Not listed

CISA SSVCTrack at low or medium mission impact; Attend 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 at low or medium mission impact and sooner than that at high, and watch the vendor's advisory for the fix.

Exploitation none (CISA Vulnrichment) · Automatable yes (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

October 1, 2026

Last Modified

October 1, 2026

Advisory Details (1)

Auto-updated Oct 1, 2026
🔬 Proof of concept available. No patch confirmed yet.
generic🟡 PoC Available

BackupSheep <= 1.8 – Unauthenticated Arbitrary File Deletion and Backup Exfiltration via Empty Integration Key | CVE 2026-101148 | Plugin Vulnerabilities

https://wpscan.com/vulnerability/5d6fce13-34e3-4ec6-9b47-a78dd7c94fed/

Vendor Advisories for CVE-2026-101148(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 31× in last 7d / 31× 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. 2026-10-04 12:02 UTCGHSA enrichment
  2. 2026-10-04 08:20 UTCGHSA enrichment
  3. 2026-10-04 04:37 UTCGHSA enrichment
  4. 2026-10-04 00:55 UTCGHSA enrichment
  5. 2026-10-03 21:12 UTCGHSA enrichment
  6. 2026-10-03 17:29 UTCEG score recompute
  7. 2026-10-03 17:29 UTCGHSA enrichment
  8. 2026-10-03 14:25 UTCEPSS rescore
  9. 2026-10-03 13:46 UTCGHSA enrichment
  10. 2026-10-03 10:02 UTCGHSA enrichment
  11. 2026-10-03 06:19 UTCGHSA enrichment
  12. 2026-10-03 02:36 UTCGHSA enrichment
  13. 2026-10-02 22:53 UTCGHSA enrichment
  14. 2026-10-02 19:10 UTCEG score recompute
  15. 2026-10-02 19:10 UTCGHSA enrichment
  16. 2026-10-02 15:27 UTCGHSA enrichment
  17. 2026-10-02 11:44 UTCGHSA enrichment
  18. 2026-10-02 07:57 UTCGHSA enrichment
  19. 2026-10-02 04:12 UTCGHSA enrichment
  20. 2026-10-02 00:27 UTCGHSA enrichment
  21. 2026-10-01 20:44 UTCGHSA enrichment
  22. 2026-10-01 17:01 UTCGHSA enrichment
  23. 2026-10-01 13:19 UTCEG score recompute
  24. 2026-10-01 13:19 UTCGHSA enrichment
  25. 2026-10-01 11:27 UTCGHSA enrichment
Show 6 more
  1. 2026-10-01 11:01 UTCEG score recompute▲ 10.00
  2. 2026-10-01 11:01 UTCGHSA enrichment
  3. 2026-10-01 11:00 UTCMITRE cvelistV5CVSS v3 → 10 · severity → CRITICAL
  4. 2026-10-01 06:19 UTCNVD update
  5. 2026-10-01 06:16 UTCEG score recompute
  6. 2026-10-01 06:15 UTCMITRE cvelistV5first tracked

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Frequently asked(5)

What is CVE-2026-101148?
CVE-2026-101148 is a critical vulnerability published on October 1, 2026. The BackupSheep WordPress Backup Plugin WordPress plugin through 1.8 does not properly validate its integration key, treating an unset or blank key as valid, which allows unauthenticated attackers to create and download full site backups, including the database with user password hashes, and to…
When was CVE-2026-101148 disclosed?
CVE-2026-101148 was first published on October 1, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.
Is CVE-2026-101148 actively exploited?
CVE-2026-101148 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 0.3% probability of exploitation in the next 30 days (21st percentile of EPSS-scored CVEs).
What is the CVSS score of CVE-2026-101148?
CVE-2026-101148 has a CVSS v3.1 base score of 10.0 (CISA-ADP / Vulnrichment enrichment; NVD's own analysis pending).
How do I remediate CVE-2026-101148?
No fix for CVE-2026-101148 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-2026-101148 are linked in the Vendor Advisories panel on this page.

Dependency Blast Radius

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