Quick answer
Direct answer
Risk scores
| CVSS metric | What it means |
|---|---|
| Attack vector (AV:N) | Network: reachable remotely |
| Attack complexity (AC:H) | High complexity |
| Attack requirements (AT:P) | Attack requirements present |
| Privileges required (PR:N) | No privileges required |
| User interaction (UI:N) | No user interaction |
| Confidentiality (VC:L) | Low confidentiality impact |
| Integrity (VI:H) | High integrity impact |
| Availability (VA:L) | Low availability impact |
CVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:P/AU:Y/R:I/V:D/RE:M/U:Red
About Opentext Filr
CVE-2026-3266 affects Opentext Filr, a product from Opentext. Before acting, confirm where Opentext Filr runs in your estate, who owns it and whether it is reachable from the internet, because exposure decides real risk more than the score alone.
What the flaw is
In plain terms: Missing Authorization vulnerability in OpenText™ Filr allows Authentication Bypass. The vulnerability could allow unauthenticated users to get XSRF token and do RPC with carefully crafted programs. This issue affects Filr: through 25.1.2.
The weakness class is Missing Authorization. The software does not check permissions before an action.
Based on its CVSS vector, the flaw can be reached over the network, needs no login, and needs no user interaction. Apply the vendor fix and confirm exposure on internet facing and business critical assets first.
Affected versions and timeline
| Field | Detail |
|---|---|
| Product | Opentext Filr |
| Affected versions | Filr before 25.1.3 |
| Published | Mar 3, 2026 |
| Last modified | Jun 17, 2026 |
| Added to CISA KEV | Not listed |
| Assigning CNA | security@opentext.com |
How to detect it
- Inventory every instance of Opentext Filr and record the running version against the affected range above.
- Check external attack surface scans for internet facing instances of the component.
- Review logs on affected systems for unusual requests, errors or new processes around the vulnerable function.
- Confirm with an authenticated vulnerability scan once your scanner has a check for this CVE.
How to fix it
- Apply the fixed version of Opentext Filr named in the vendor advisory.
- If patching must wait, restrict network access to the affected service and put it behind authentication or a web application firewall rule.
- Rescan after the change to prove the exposure is gone, then close the ticket.
CTEM action plan
| CTEM stage | What to do for this CVE |
|---|---|
| Scope | Add every business service that depends on Opentext Filr to the current CTEM cycle. |
| Discover | Find all instances, including shadow and cloud deployments, and record versions and exposure. |
| Prioritize | Rank using EPSS and CVSS together with asset exposure and business impact. |
| Validate | Confirm the flaw is reachable and exploitable in your environment and that compensating controls work. |
| Mobilize | Assign the fix to the asset owner with a due date matched to the priority, then verify closure. |
CWE References
- CWE-862: Missing Authorization More CVEs with this weakness
Technical References
Frequently asked questions
Related CVEs
Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') vulnerability in OpenText™ XM Fax allows Path Traversal. The vulnerability could allow an attacker to arbitrarily disclose content of files on the local filesystem. This issue affects XM Fax: 24.2.
In Telecomm, there is a possible way to initiate an unauthorized phone call due to a permissions bypass. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
A validation issue existed in the entitlement verification. This issue was addressed with improved validation of the process entitlement. This issue is fixed in macOS Golden Gate 27, macOS Sequoia 15.8, macOS Tahoe 26.7. A malicious app may be able to break out of its sandbox.
Missing authorization in Azure DNS allows an unauthorized attacker to elevate privileges over a network.
In NFC, there is a possible way to spoof an NFC event due to a missing permission check. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
In SettingsLib, there is a possible missing permission check due to a logic error in the code. This could lead to local escalation of privilege with no additional execution privileges needed. User interaction is not needed for exploitation.
Earn your free CTEM certification.
Learn to scope, prioritize, validate and mobilize fixes for CVEs like CVE-2026-3266 with a free CTEM certification.
Beginner / Practitioner / Program Leader
Explore certifications