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CVE-2021-23261· NVD / CVE Program· CNA crafter

Overriding the system configuration file causes a denial of service

Authenticated administrators may override the system configuration file and cause a denial of service.

MediumCVSS 4.9 · v3.1—No exploit No fix recorded
Published
Dec 2, 2021
Updated
Jun 16, 2026
EPSS
0.7% · 50th percentile
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Action score

19

Monitor

Low priority for now.

CVSS
19 / 40 · 4.9 / 10
CISA KEV
0 / 30 · Not listed
EPSS
0 / 30 · 0.7%

CNA vs NVD score

NVD
4.9
CNA · crafter
4.5
0.4 point gap

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

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

Affected systems

VendorProduct
craftercmscrafter cms

Affected versions

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

  • craftercms crafter cms3.1.0 and later · before 3.1.13

Versions reported by the vendor

Affected version ranges reported by the assigning authority (crafter). Independent of NVD's CPE analysis and usually ahead of it.

  • Crafter Software Crafter CMS

    • 3.1 and later · before 3.1.13affected

Same product

craftercms: all records

Other highest-scoring records for the same primary product.

  • CVE-2017-15681In Crafter CMS Crafter Studio 3.0.1 a directory traversal vulnerability exists which allows unauthenticated attackers to overwrite files fro
    40Plan
  • CVE-2021-23264Transmission of Private Resources into a New Sphere ('Resource Leak') and Exposure of Resource to Wrong Sphere in Crafter Search
    36Monitor
  • CVE-2018-19907A Server-Side Template Injection issue was discovered in Crafter CMS 3.0.18.
    36Monitor
  • CVE-2021-23267Improper Control of Dynamically-Managed Code Resources in Crafter Studio
    35Monitor
  • CVE-2017-15685Crafter CMS Crafter Studio 3.0.1 is affected by: XML External Entity (XXE).
    35Monitor
  • CVE-2017-15683In Crafter CMS Crafter Studio 3.0.1 an unauthenticated attacker is able to create a site with specially crafted XML that allows the retrieva
    34Monitor

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

No known public exploit

No public exploit has been observed yet. That doesn't mean you're safe, only that the bar is a little higher.

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.

No dated events beyond publication.

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.

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.
  • Administrator privileges are required.
  • No user action is required.
  • No special conditions are required; it is repeatable.

If successful

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

Weakness class (CWE)

CWE-703 · Improper Check or Handling of Exceptional Conditions

CVSS vector

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