Security readout for executives and security teams
Plain-English summary
CVE-2026-30345 is a file-write flaw in CTFd’s admin import feature. A malicious import archive can escape the intended extraction folder and write files elsewhere. That can alter application files or configuration, creating serious integrity risk. Public sources do not show CISA KEV listing or confirmed active exploitation.
Executive priority
Prioritize within normal high-severity patch governance for any internet-facing or externally administered CTFd deployment. Escalate if untrusted users can influence imports or if CTFd runs with broad filesystem write permissions.
Technical view
The CVE describes a Zip Slip/path traversal issue, mapped to CWE-23, in CTFd v3.8.1-18-gdb5a18c4 admin import handling. The assigned CVSS 3.1 score is 7.5 High with integrity impact only. Affected-product metadata is incomplete in the CVE record, but the description names CTFd and that specific build.
Likely exposure
Organizations operating CTFd, especially the named v3.8.1-18-gdb5a18c4 build, may be exposed if import functionality can process attacker-controlled archives. Exposure depends on deployment configuration, authentication requirements for import, and who can submit imports.
Exploitation context
The source bundle includes public researcher references for this CVE, but no cited source confirms active exploitation. The CVSS vector says network, low complexity, no privileges, and no user interaction, while the description references admin import functionality; treat access assumptions as requiring validation.
Researcher notes
Evidence is limited. The CVE lists affected vendor/product as n/a but names CTFd v3.8.1-18-gdb5a18c4 in the description. The 3.8.2 blog is referenced, but the bundle does not explicitly state it fixes this CVE. Avoid assuming exploit-in-the-wild status.
Mitigation direction
- Identify all CTFd instances and their exact versions/builds.
- Review CTFd’s security policy and release notes for vendor-supported remediation.
- Evaluate upgrading to a vendor-supported version if guidance indicates a fix.
- Restrict access to import functionality to trusted administrators only.
- Avoid processing import archives from untrusted sources.
- Monitor application directories for unexpected file changes.
Validation and detection
- Confirm whether CTFd is deployed in production, staging, or event environments.
- Record the running CTFd version and build identifier.
- Determine who can access the admin import function.
- Review recent import activity for untrusted or unexpected archives.
- Check file integrity around application, configuration, and writable directories.
- Track the CVE and CTFd advisories for updated affected-version details.
Public sources used
Generated from the cited source records. This long-tail analysis has not been individually reviewed by a named human.
Conservative CVE-to-ATT&CK context
These mappings and lookup hints may be relevant to the vulnerability behavior, CWE, affected product, or exposure path. Glexia-inferred context is not an official MITRE, ATT&CK, CWE, or CVE Program mapping.
ATT&CK lookup starting points
Use these exact CWE pages and searches to review the Glexia ATT&CK library from this CVE's weakness and description context.
CWE-23: File access and web shell behavior lookup
File traversal and upload weaknesses can lead teams to review file, web shell, execution, and collection telemetry. Open the exact CWE lookup page first, then review the ATT&CK searches from that MITRE weakness context. This is a Glexia lookup hint, not an official ATT&CK mapping.
Open ATT&CK lookupCVE-2026-30345 mapping review
Open the CVE-to-ATT&CK bridge for reviewed, inferred, or future official mappings tied to this CVE.
Open ATT&CK lookup- Severity
- High
- CVSS
- 7.5 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
CNA and ADP enrichment extracted from CVE v5
These fields come from the CVE record and ADP containers, not from Glexia's Take. They preserve time-varying source decisions such as CISA SSVC, KEV status, CVSS metrics, and provider references.
CVSS vector scores
1 official scoreWe collect every scored CVSS vector available in the official CNA and ADP containers. When more than one version is present, the table keeps the source vectors side by side instead of collapsing them into the highest score.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N3.93.6Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.5HighVector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://github.com/CTFd/CTFdCVE reference
- https://github.com/CTFd/CTFd/security/policyCVE reference
- https://blog.ctfd.io/ctfd-3-8-2/CVE reference
- https://github.com/syphonetic/CVE-2026-30345CVE reference
- https://gist.github.com/syphonetic/2e16a6d1a44e7970c849a17efd0a2270CVE reference
Products and packages named in the record
CWE details
CWE links open Glexia weakness intelligence pages with official CWE context, developer remediation guidance, and related CVE mappings.
Relative Path Traversal
Relative Path Traversal represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.