# CVE-2026-78322: File-roller: file-roller: stack buffer overflow in parse_progress_line for 7z and rar handlers

Status: published. Published: 2026-08-25. Updated: 2026-11-06.

A flaw was found in file-roller. When opening or extracting a malicious 7z or RAR archive containing a file entry with an excessively long path, file-roller's progress-line parsing copies the path into a fixed-size stack buffer using an unbounded string copy. This can trigger a stack buffer overflow and cause file-roller to terminate, resulting in a denial of service. To exploit this flaw, a victim must open or extract the crafted archive using file-roller.

## Remediation

- workaround: Avoid opening or extracting untrusted 7z or RAR archives with file-roller until an updated package is installed. (source: CNA: redhat)

## Affected products and versions

- Red Hat / Red Hat Enterprise Linux 6 (file-roller): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 7 (file-roller): Version range not reported. Source: CNA: redhat
- Red Hat / Red Hat Enterprise Linux 8 (file-roller): Version range not reported. Source: CNA: redhat

## Severity and prioritization

- CVSS 3.1: 6.5 (medium); CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H; source: CNA: redhat

- CISA KEV: No listing in collected sources

- EPSS: 0.51% as of 2026-11-05; percentile 43.33%

- SSVC: exploitation poc; automatable no; technical impact partial; source ADP: CISA-ADP

- Weaknesses: CWE-120

## Exploit evidence

- exploit: https://gitlab.gnome.org/GNOME/file-roller/-/issues/327 (ADP: CISA-ADP)

## References

- https://access.redhat.com/security/cve/CVE-2026-78322 (CNA: redhat; vdb-entry, x_refsource_REDHAT)

- https://bugzilla.redhat.com/show_bug.cgi?id=2521767 (CNA: redhat; issue-tracking, x_refsource_REDHAT)

- https://gitlab.gnome.org/GNOME/file-roller/-/commit/ffb76dc866342cef6a4914873faaa880d14d5aa4 (CNA: redhat)

- https://gitlab.gnome.org/GNOME/file-roller/-/issues/327 (CNA: redhat)

- https://gitlab.gnome.org/GNOME/file-roller/-/issues/327 (ADP: CISA-ADP; exploit)

## Provenance

- CNA: redhat: https://www.cve.org/CVERecord?id=CVE-2026-78322; retrieved 2026-11-06; source updated 2026-11-06

- FIRST EPSS: https://api.first.org/data/v1/epss?cve=CVE-2026-78322; retrieved 2026-11-06; source updated Not reported

Revision: 4d9c3315a1e675a97c43298ca4ffa1a7c5e34943aff9ff253fe7c9bec0b93014

Canonical: https://y2.dev/cve/CVE-2026-78322

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