The Backup Migration plugin for WordPress is vulnerable to Remote File Inclusion in versions 1.0.8 to 1.3.9 via the 'content-dir' HTTP header. This makes it possible for unauthenticated attackers to include remote files on the server, resulting in code execution. NOTE: Successful exploitation of this vulnerability requires that the target server's php.ini is configured with 'allow_url_include' set to 'on'. This feature is deprecated as of PHP 7.4 and is disabled by default, but can still be explicitly enabled in later versions of PHP.
CVE-2023-6971
This critical-severity CVE scores 9.8 under NVD CVSS v3. EPSS exploit probability: 6.4%, top 7% of all CVEs by exploit prediction. GitHub Security Advisory enrichment pending alignment with NVD CVSS.
- High severity, but no confirmed exploitation yet
No vendor fix yet — apply a workaround or compensating control (WAF / firewall / segmentation) and watch for a patch.
- CVSS v3
- 9.8
- EG Score
- 9.8(medium)
- EG Risk
- 51(Track)EG Risk 51/100SSVC: 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 computedSeverity98% × 45%Exploitation6% × 40%Automatability30% × 15%Action: Routine — remediate on your standard cadence. - EPSS PROB
- 6%
- EPSS %ILE
- 93%
- KEV
- Not listed
Published
December 23, 2023
Last Modified
June 17, 2026
References (6)
- security@wordfencehttps://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.9/includes/backup-heart.php
- security@wordfencehttps://plugins.trac.wordpress.org/changeset/3012745/backup-backup
- security@wordfencehttps://www.wordfence.com/threat-intel/vulnerabilities/id/b380283c-0dbb-4d67-9f66-cb7c400c0427?source=cve
- af854a3a-2127-422b-91ae-364da2661108https://plugins.trac.wordpress.org/browser/backup-backup/tags/1.3.9/includes/backup-heart.php
- af854a3a-2127-422b-91ae-364da2661108https://plugins.trac.wordpress.org/changeset/3012745/backup-backup
- af854a3a-2127-422b-91ae-364da2661108https://www.wordfence.com/threat-intel/vulnerabilities/id/b380283c-0dbb-4d67-9f66-cb7c400c0427?source=cve
Weakness Classification(1)
MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.
Data Freshness Timeline
(refreshed 7× in last 7d / 28× 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 149 total refreshes for this CVE.
- 2026-09-18 19:26 UTCEPSS rescore
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- 2026-07-22 23:17 UTCEG score recompute▲ 1.70
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- 2026-06-24 06:36 UTCNVD updateCVSS v3 → 9.8 · severity → CRITICAL
- 2026-06-23 21:31 UTCEPSS rescore
Related CVEs(same CWE)
Same CWE
10 shownCWE-829
- CVE-2021-41037EG 10.0CRITICAL
- CVE-2022-1161EG 10.0EPSS p92CRITICAL
- CVE-2020-4561EG 10.0CRITICAL
- CVE-2022-24119EG 9.8CRITICAL
- CVE-2020-16152EG 9.8EPSS p98CRITICAL
- CVE-2021-21804EG 9.8CRITICAL
- CVE-2020-25414EG 9.8CRITICAL
- CVE-2020-3794EG 9.8EPSS p94CRITICAL
- CVE-2020-8128EG 9.8CRITICAL
- CVE-2012-4919EG 9.8CRITICAL
Frequently asked(5)
What is CVE-2023-6971?
When was CVE-2023-6971 disclosed?
Is CVE-2023-6971 actively exploited?
What is the CVSS score of CVE-2023-6971?
How do I remediate CVE-2023-6971?
Dependency Blast Radius
Explore the affected products and dependency analysis for CVE-2023-6971
Is Your Infrastructure Affected by CVE-2023-6971?
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