Authenticated file access via unresolved link targets
Published Apr 1, 2026 · Updated Apr 1, 2026
Path traversal in TinaCMS @tinacms/graphql before 2.2.2 allows remote authenticated users to read, write, or delete files outside the content root. FilesystemBridge resolves joined paths lexically and checks their string prefix without canonicalizing symlink or junction targets before get(), put(), delete(), and glob() perform filesystem I/O. Exploitation requires a link inside the allowed tree and reachable GraphQL or content operations; consequences are bounded by the service account's filesystem access.
Summary
What happened
Path traversal in TinaCMS @tinacms/graphql before 2.2.2 allows remote authenticated users to read, write, or delete files outside the content root. FilesystemBridge resolves joined paths lexically and checks their string prefix without canonicalizing symlink or junction targets before get(), put(), delete(), and glob() perform filesystem I/O. Exploitation requires a link inside the allowed tree and reachable GraphQL or content operations; consequences are bounded by the service account's filesystem access.
The record
- CVE
- CVE-2026-34604
- Published
- Apr 1, 2026
- Updated
- Apr 1, 2026
- Vendor
- TinaCMS
- Product
- TinaCMS
- Classifications
- CWE-59, CWE-22, T1005
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Apr 1, 2026CVE publishedPublication date reported by the CVE source.
- Apr 1, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=< 2.2.2
What conditions does exploitation require?
What is affected?
Published CVSS scores
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
Public exploit references
- GitHub advisory Windows junction reproductionproof of concept · demonstrated
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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