Security readout for executives and security teams
Plain-English summary
Plane 0.7.1-dev has an unsafe avatar upload path. A logged-in attacker can upload an HTML file as a profile avatar, and that file may run HTML and JavaScript when viewed. This can threaten user sessions or data if another user interacts with the uploaded content.
Executive priority
Treat this as a high-priority remediation for affected Plane instances, especially where untrusted users can create accounts. Prioritize inventory first because the sources name a narrow affected version and no confirmed active exploitation.
Technical view
CVE-2023-30791 is CWE-434 in Plane 0.7.1/0.7.1-dev. The avatar upload feature permits HTML extensions and serves them in a way that interprets HTML and JavaScript. CVSS is 7.1 high, with low privileges and user interaction required.
Likely exposure
Exposure appears limited to Plane deployments running the affected 0.7.1 or 0.7.1-dev version with profile avatar uploads enabled. The source bundle does not identify other affected versions or products.
Exploitation context
The CVE is not listed as KEV, and the provided sources do not state active exploitation. Exploitation requires an authenticated attacker and user interaction, but impact is rated high for confidentiality, integrity, and availability.
Researcher notes
Evidence supports an insecure file upload issue in the avatar change function. The provided sources do not name a fixed version, detailed exploit activity, or broader affected version range, so avoid extrapolating beyond Plane 0.7.1/0.7.1-dev.
Mitigation direction
- Inventory Plane deployments and identify any 0.7.1 or 0.7.1-dev instances.
- Check Plane vendor guidance and repository history for fixed release information.
- Temporarily restrict avatar uploads to expected image file types only.
- Serve uploaded avatars from non-executable storage with safe content types.
- Review uploaded avatar files for unexpected HTML content.
Validation and detection
- Confirm Plane version on each internet-facing and internal deployment.
- Test whether avatar upload accepts HTML files in a controlled environment.
- Verify uploaded avatars are not interpreted as HTML or JavaScript.
- Review access logs for suspicious avatar uploads or unusual profile changes.
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-434: 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 lookupFile access behavior lookup
The CVE wording references file access or upload behavior, so file telemetry and web shell review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program mapping.
Open ATT&CK lookupCVE-2023-30791 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
- 7.1 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
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:H/PR:L/UI:R/S:U/C:H/I:H/A:H1.25.9Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.1HighVector: CVSS:3.1/AV:N/AC:H/PR:L/UI:R/S:U/C:H/I:H/A:H
Source materials
- CVE List V5 sourceCVE List V5
- https://fluidattacks.com/advisories/indio/CVE reference
- https://github.com/makeplane/planeCVE 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.
Unrestricted Upload of File with Dangerous Type
Unrestricted Upload of File with Dangerous Type represents a recurring weakness pattern that can create exploitable paths when design, validation, or implementation controls are missing.