Cross-tenant tag modification via ID-only repository writes
Published Jul 27, 2026 · Updated Jul 27, 2026
Authorization bypass in Papra before 26.5.0 allows remote authenticated users to rename or delete another organization's tags. The tag update and deletion routes check membership only for the organization named in the URL, while repository writes filter solely by tag ID. Exploitation requires membership in any organization and knowledge of a foreign 24-character tag ID; it alters or removes tags and associations but does not expose or delete documents.
Summary
What happened
Authorization bypass in Papra before 26.5.0 allows remote authenticated users to rename or delete another organization's tags. The tag update and deletion routes check membership only for the organization named in the URL, while repository writes filter solely by tag ID. Exploitation requires membership in any organization and knowledge of a foreign 24-character tag ID; it alters or removes tags and associations but does not expose or delete documents.
The record
- CVE
- CVE-2026-48052
- Published
- Jul 27, 2026
- Updated
- Jul 27, 2026
- Vendor
- Papra
- Product
- Papra
- Classifications
- CWE-639, T1565.001
- Attack vector
- network
- Privileges
- authenticated
Timeline
How it unfolded
- Jul 27, 2026CVE publishedPublication date reported by the CVE source.
- Jul 27, 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=< 26.5.0
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
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Weakness, pattern, technique
Public exploit references
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Technologies
Your stack
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Your stack
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