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CVE-2020-35948· NVD / CVE Program· CNA mitre

An issue was discovered in the XCloner Backup and Restore plugin before 4.2.13 for WordPress.

An issue was discovered in the XCloner Backup and Restore plugin before 4.2.13 for WordPress. It gave authenticated attackers the ability to modify arbitrary files, including PHP files. Doing so would allow an attacker to achieve remote code execution. The xcloner_restore.php write_file_action could overwrite wp-config.php, for example. Alternatively, an attacker could create an exploit chain to obtain a database dump.

HighCVSS 8.8 · v3.1—Proof of concept No fix recorded
Published
Jan 1, 2021
Updated
Jun 16, 2026
EPSS
24.9% · 98th percentile
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Report tools

JSON

Action score

42

Plan

Add it to your regular patch cycle.

CVSS
35 / 40 · 8.8 / 10
CISA KEV
0 / 30 · Not listed
EPSS
7 / 30 · 24.9%

CNA vs NVD score

NVD
8.8
CNA · mitre
9.9
1.1 point gap

CVSS:3.1/AC:L/AV:N/A:H/C:H/I:H/PR:L/S:C/UI:N

The score given by the assigning authority versus NVD’s independent score. A gap means the severity is contested.

Affected systems

VendorProduct
xclonerxcloner

Affected versions

NVD version ranges (for catalog products). Add the product to your stack with a version and matching uses these.

  • xcloner xcloner4.2.1 and later · before 4.2.13

Same product

xcloner: all records

Other highest-scoring records for the same primary product.

  • CVE-2020-35950An issue was discovered in the XCloner Backup and Restore plugin before 4.2.153 for WordPress.
    35Monitor
  • CVE-2014-2579Multiple cross-site request forgery (CSRF) vulnerabilities in XCloner Standalone 3.5 and earlier allow remote attackers to hijack the authen
    32Monitor
  • CVE-2014-2996XCloner Standalone 3.5 and earlier, when enable_db_backup and sql_mem are enabled, allows remote authenticated administrators to execute arb
    31Monitor
  • CVE-2014-8603cloner.functions.php in the XCloner plugin 3.1.1 for WordPress and 3.5.1 for Joomla! allows remote administrators to execute arbitrary code
    28Monitor
  • CVE-2014-2340Cross-site request forgery (CSRF) vulnerability in the XCloner plugin before 3.1.1 for WordPress allows remote attackers to hijack the authe
    28Monitor
  • CVE-2020-13424The XCloner component before 3.5.4 for Joomla! allows Authenticated Local File Disclosure.
    27Monitor

Remediation

Which version to upgrade to

Fix versions compiled from the vendor, package registries and Microsoft. Verify the vendor's note before upgrading.

No fix version is recorded for this entry. Check the references for vendor advisories.

Exploit status

Proof of concept available

A public proof of concept or detection signature exists. Exploit knowledge is out there; don't delay patching.

Evidence

  • Exploit-DB entry ×1

Noroxi does not host or link to exploit code. Metasploit module names and Nuclei template ids are shown (names, not code); Exploit-DB entries and PoC repositories are given as counts only.

Public exploit evidence
SourceKindDate
Exploit-DB entrywebapps2021-07-01

Research context

For pentesters and researchers: attack profile, score disagreement, timeline, patch commits, credits, variant and chain candidates, bug bounty scope. All derived from existing data; no exploit code.

Timeline

From publication to today: proof of concept, Metasploit module, CISA KEV and fix record. Dates are as reported by the sources.

  1. Published
  2. First PoC+181 d
  3. TodaySep 30, 2026+2099 d
EPSS, last 120 days

FIRST EPSS daily score; only changes of 0.01 or more are recorded (step chart).

Patch and commit links

Commit, PR and diff links among the references. A starting point for patch-diffing and variant hunting; fixes, not exploits.

No commit or PR link among the references.

Credits

All researchers

Finders, reporters and analysts named in the CNA record. Click a name for that researcher’s other records.

No credits in the CNA record.

Variant candidates

Same product, same weakness class, within 18 months. If the patch missed the root cause, the sibling bug is here.

No nightly-computed relations.

Chain candidates

An authentication bypass and a privilege-requiring bug in the same product, published close together: combined they may become an unauthenticated path.

—

Bug bounty scope

No known public program.

Source: bounty-targets-data (public HackerOne, Bugcrowd, Intigriti, YesWeHack listings).

Technical details

Attack conditions

  • Anyone who can reach it over the internet can trigger it.
  • A low-privileged account is enough.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

Confidentiality
high · data can be read
Integrity
high · data or configuration can be modified
Availability
high · the service can be disrupted
Attack vector
Network
Attack complexity
Low
Privileges required
Low
User interaction
None
Scope
Unchanged
Confidentiality impact
High
Integrity impact
High
Availability impact
High

Weakness class (CWE)

CWE-863 · Incorrect Authorization

CVSS vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

nvd-primary

Attack context

MITRE CAPEC attack patterns and ATT&CK techniques for this weakness class (CWE). A starting point for detection rules and threat hunting.

MITRE has no CAPEC/ATT&CK mapping for this CWE.

Noroxi analysis

No Noroxi analysis for this record yet

We don't hand-write analysis for all 385,000+ vulnerabilities; that wouldn't be honest. For notable, high-impact vulnerabilities our team writes the mechanism, detection and remediation steps.

We use this product, ask for help

Change log

No changes recorded on tracked fields yet. Score, KEV, exploit maturity and fix status changes appear here.

References

Vendor advisories and official records. Exploit/PoC links are deliberately left out.

All records