Medium severity · published Sep 10, 2026
CVE-2026-88790
proma-ai Proma File Preview Service file-preview-service.ts resolveTargetPath path traversal
4.8
CVSS
0.2%
EPSS
No
On KEV
Description
A security vulnerability has been detected in proma-ai Proma up to 0.19.37. Affected is the function resolveTargetPath of the file apps/electron/src/main/lib/file-preview-service.ts of the component File Preview Service. Such manipulation of the argument file_path leads to path traversal. Local access is required to approach this attack. The exploit has been disclosed publicly and may be used. Upgrading to version 0.19.52 is able to address this issue. The name of the patch is b7bf78ab74b1552c92fc98c7db9a8a8d92c631df. It is suggested to upgrade the affected component. The PoC's candidateBasePaths parameter name does not match the current IPC API (0.19.52 uses FileAccessOptions with internal getPreviewCandidateBasePaths()). The reporter likely targeted 0.16.3 where the IPC handler accepted raw string[] base paths. The core vulnerability - basename-collision fallback - is independent of the parameter name and is confirmed in source.
CVSS vector
CVSS:3.1/AV:L/AC:L/PR:L/UI:R/S:U/C:L/I:L/A:L
Attack vector
Local
Complexity
Low
Privileges
Low
User interaction
Required
Confidentiality
Low
Integrity
Low
Availability
Low
Scope
Unchanged
Exploitation
Is it being used?
Exploit prediction (EPSS)0.2% · higher than 7% of CVEs
Exploited in the wildNo evidence yet
CISA KEVNot listed
Ransomware campaign useNot known
Affected products
Which versions
PR
Proma · proma-ai
0.16.3; 0.16.9; 0.17.1; 0.17.15; 0.18.1; 0.18.2; +7 more · source: vendor
References
NVD
https://nvd.nist.gov/vuln/detail/CVE-2026-88790
CVE.org
https://www.cve.org/CVERecord?id=CVE-2026-88790
github.com
https://github.com/proma-ai/Proma/
github.com
https://github.com/proma-ai/Proma/commit/b7bf78ab74b1552c92fc98c7db9a8a8d92c631df
github.com
https://github.com/proma-ai/Proma/issues/1366
github.com
https://github.com/proma-ai/Proma/pull/2030
github.com
https://github.com/proma-ai/Proma/releases/tag/v0.19.52
vuldb.com
https://vuldb.com/cve/CVE-2026-88790
