Medium 5.4Published Oct 27, 2026

CVE-2026-117563MrDoc through 1.1.1 Broken Access Control via manage_doc_share

Updated under an hour ago (Oct 29, 2026, 3:30 PM ET)

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No exploitation reported and no EPSS estimate yet.

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MrDoc through 1.1.1 contains a broken access control vulnerability in the manage_doc_share type 3 branch that allows authenticated users to modify other users' document share settings because updates lack an ownership check. Attackers can compute predictable share tokens from the MD5 of document ID and username to re-enable disabled shares or remove access codes, exposing private documents.

CVSS: 5.4 MEDIUM (v3.1, CNA)CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:N
Weakness (CWE): CWE-639
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: VulnCheck
NVD analysis: Deferred
Record last updated: Oct 27, 2026
First seen by InfoSec Signals: Oct 27, 2026

Affected products

Affected products

zmister2016 MrDoc zmister2016:mrdoc (from the name)	through 1.1.1	CNA record

References

References

https://github.com/zmister2016/MrDoc/issues/208	issue-tracking
https://github.com/zmister2016/MrDoc	product
https://github.com/zmister2016/MrDoc/commit/2cd13ff0659dbef9aea59d5af122a21204942262	patch
https://github.com/zmister2016/MrDoc/blob/v1.1.1/app_doc/views.py#L1835-L1849	technical-description
https://www.vulncheck.com/advisories/mrdoc-through-1.1.1-broken-access-control-via-manage-doc-share	third-party-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.