proma-ai Proma File Preview Service file-preview-service.ts resolveTargetPath path traversal (CVE-2026-88790) | HOL Guard CVE

Unknown severity · Source severity not reportedCVE-2026-88790

proma-ai Proma File Preview Service file-preview-service.ts resolveTargetPath path traversal

Answer in brief

CVE-2026-88790 records a Unknown severity vulnerability in proma-ai Proma File Preview Service file-preview-service.ts resolveTargetPath path traversal. The current sources do not mark it as known exploited. The current feed maps proma-ai/Proma (generic). Check affected ranges and fixed versions before updating.

Analysis pending evidence review

HOL Guard separates source facts from reviewed analysis. See the methodology.

Published Sep 10, 2026Updated Sep 10, 2026Source checked Sep 10, 2026First seen by HOL Sep 10, 2026Material review Sep 10, 2026

Upstream Advisory

Key facts

Risk: Unknown severitySource severity not reported
Exploitation: Not marked as known exploited
Affected software: 1 mapped package or product
Fix availability: Not reported

Why this deserves its current priority

A CVSS score is not reported in the current record. The current sources do not mark it as known exploited. Treat this as a source-backed prioritization signal, not a statement about your environment.

Analysis status

Analysis pending evidence review

Factual feed record only; HOL analysis is not approved for indexing. Read the methodology.

Affected scope and exposure questions

The current feed maps proma-ai/Proma (generic). Check affected ranges and fixed versions before updating.

Mapped affected packages and fixed versions
Package	Affected range	Fixed version
proma-ai/Promageneric	0.16.3 \|\| 0.16.9 \|\| 0.17.1 \|\| 0.17.15 \|\| 0.18.1 \|\| 0.18.2 \|\| 0.19.1 \|\| 0.19.5 \|\| 0.19.16 \|\| 0.19.23 \|\| 0.19.26 \|\| 0.19.31 \|\| 0.19.37	Not reported

Recommended response

Check inventory. Check lockfiles and deployed manifests for proma-ai/Proma.
Review the reported fix. Monitor this advisory for an available fix and review any installs of the affected package.

Evidence timeline and material changes

Published upstream
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
Source modified
Sep 10, 2026
Evidence: source:cvelist:source_dates:source-dates:record
First seen by HOL
Sep 10, 2026

Sources and claim methodology

Upstream source 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.

Quoted source text, attributed separately from HOL analysis.