CVE-2026-3266Network attack vector

Authentication bypass via XSRF token RPC

Published Mar 3, 2026 · Updated Mar 3, 2026

Missing authorization in OpenText Filr 25.1.2 and earlier allows remote attackers to bypass authentication through crafted RPC requests. The server issues an XSRF token to an unauthenticated requester and then accepts that token for RPC operations initiated by a crafted program. Network reachability and a crafted request sequence are required; no account or user interaction is needed, and successful RPC can read or modify server-managed data.

CVSS severity8.3
High
EPSS probability0.34%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Missing authorization in OpenText Filr 25.1.2 and earlier allows remote attackers to bypass authentication through crafted RPC requests. The server issues an XSRF token to an unauthenticated requester and then accepts that token for RPC operations initiated by a crafted program. Network reachability and a crafted request sequence are required; no account or user interaction is needed, and successful RPC can read or modify server-managed data.

The record

CVE
CVE-2026-3266
Published
Mar 3, 2026
Updated
Mar 3, 2026
Vendor
OpenText
Product
Filr
Classifications
CWE-862, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Mar 3, 2026CVE publishedPublication date reported by the CVE source.
  2. Mar 3, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=25.1.2

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

OpenText · Filrversion=0 <=25.1.2

Published CVSS scores

8.3OpenTextCVSS:4.0/AV:N/AC:H/AT:P/PR:N/UI:N/VC:L/VI:H/VA:L/SC:L/SI:L/SA:L
9.8NVDCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

Daily unique IPsNo honeypot observations are available for this CVE in the selected window.

No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitUnconfirmed

Weakness, pattern, technique

CWE-862Missing Authorization
T1190Exploit Public-Facing Application

Public exploit references

No public exploit references are available in this record.

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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