Security readout for executives and security teams
Plain-English summary
Baserow versions after 0.6.0 and before 1.1.0 allowed an authenticated user to make the server fetch an internal HTTP address through URL file upload. This could expose data from internal services that are not normally reachable from the internet.
Executive priority
Treat this as a high-priority confidentiality issue for affected Baserow systems, especially where Baserow can reach sensitive internal web services. Prioritize version inventory and upgrade planning; there is no provided evidence of active exploitation.
Technical view
CVE-2021-22255 is an SSRF in Baserow's URL file upload feature. The CVSS 3.1 vector is AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N, reflecting remote low-complexity exploitation by an authenticated user with high confidentiality impact and no stated integrity or availability impact.
Likely exposure
Exposure is most likely in self-hosted or managed Baserow deployments running versions >0.6.0 and <1.1.0 where authenticated users can use URL file upload and the server can reach internal HTTP services.
Exploitation context
The source bundle does not show CISA KEV listing or other evidence of active exploitation. The issue still matters because any authenticated account could potentially use server-side network reachability to read internal HTTP resources.
Researcher notes
Do not model this as unauthenticated exposure. The reported prerequisite is remote authenticated access. Focus validation on the URL file upload workflow, affected version range, server-side egress reachability, and confidentiality impact. The provided sources do not identify specific internal targets or exploit activity.
Mitigation direction
- Upgrade Baserow out of the affected >0.6.0 to <1.1.0 range.
- Review Baserow vendor release guidance before selecting the target version.
- Restrict URL-based file upload access to trusted users until upgraded.
- Limit server egress to internal HTTP services where operationally feasible.
- Review logs for unusual URL file upload activity by authenticated users.
Validation and detection
- Inventory all Baserow instances and record exact versions.
- Confirm whether URL file upload is enabled or reachable by authenticated users.
- Check network paths from Baserow servers to internal HTTP services.
- Review access logs around URL upload requests for internal-address patterns.
- Verify upgraded instances are no longer in the affected version range.
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.
Cloud metadata behavior lookup
The CVE wording references SSRF or metadata access, so cloud discovery and credential material review may help. This is a Glexia inferred lookup path, not an official MITRE, ATT&CK, or CVE Program 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-2021-22255 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
- 7.7 (3.1)
- Known Exploited
- No
- Published
Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/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:L/UI:N/S:C/C:H/I:N/A:N3.14Primary CVE scoreVulnerability scoring details
Base CVSS 3.1 score
7.7HighVector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N
Source materials
- CVE List V5 sourceCVE List V5
- https://gitlab.com/bramw/baserow/-/issues/370CVE reference · x_refsource_MISC
- https://baserow.io/blog/march-2021-release-of-baserowCVE reference · x_refsource_MISC
- https://gitlab.com/gitlab-org/cves/-/blob/master/2021/CVE-2021-22255.jsonCVE reference · x_refsource_CONFIRM
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.