Security readout for executives and security teams
Plain-English summary
CVE-2020-29555 affects Grav CMS backup deletion. A vulnerable site may let an attacker delete files on the server, potentially causing downtime, data loss, or application breakage. The public record also notes missing CSRF protection, meaning unauthenticated abuse may be possible through a victim’s authenticated session.
Executive priority
Prioritize remediation for internet-facing or business-critical Grav CMS deployments because arbitrary file deletion can disrupt operations. Lack of a CVSS score should not be treated as low risk.
Technical view
Grav CMS through 1.7.0-rc.17 contains path traversal in BackupDelete, allowing arbitrary file deletion on the underlying server. The CVE description states authenticated exploitation, with unauthenticated exploitation also possible because CSRF protection is missing. The source bundle provides no CVSS score, CWE mapping, CPEs, or confirmed fixed version.
Likely exposure
Organizations running Grav CMS through 1.7.0-rc.17 are the stated exposure group. Risk is higher where administrative backup functionality is reachable from user browsers or the internet.
Exploitation context
The provided sources describe the vulnerability mechanics but do not show KEV listing or cited evidence of active exploitation. Treat exploitation status as unconfirmed from this bundle.
Researcher notes
The CVE record gives a clear impact statement but limited metadata. Validate against the original BSSI advisory and Grav release history before asserting exact fixed versions, exploit maturity, or affected package identifiers.
Mitigation direction
- Inventory Grav CMS deployments and identify versions through 1.7.0-rc.17.
- Check Grav vendor guidance and release notes for the corrected version before upgrading.
- Restrict administrative access to trusted networks and authorized users.
- Harden server file permissions to limit damage from application-level deletion.
- Review backup retention and restore procedures for affected sites.
Validation and detection
- Confirm whether any Grav CMS instance is running 1.7.0-rc.17 or earlier.
- Verify whether BackupDelete functionality is enabled or reachable in administrative workflows.
- Review web and application logs for unusual backup deletion activity.
- Check whether deployed builds include CSRF protections for backup delete actions.
- Confirm remediation against official Grav guidance or release notes.
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.
CVE-2020-29555 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
- Unknown
- CVSS
- Not scored
- Known Exploited
- No
- Published
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 and timeline data
No CVSS vectors or timeline events were available in the normalized CVE source material.
Source materials
- CVE List V5 sourceCVE List V5
- https://blog.bssi.fr/cve-2020-29553-cve-2020-29555-cve-2020-29556-multiple-vulnerabilities-within-cms-grav/CVE reference · x_refsource_MISC
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.