CVE-2026-18276: Scripta eScriptorium · Missing Authorization
Affects Scripta eScriptoriumSource CVE Database V5
Not known to be exploited · CVSS 4.3 Medium.
Data as of 5 Nov 2026, 23:24 UTC
- EPSS
- 0.3% chance of exploitation in 30 days – higher than 29% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:NExploitation evidence
Disclosed: evidence found.
CVE published 6 Aug 2026
Detectable: no evidence on record.
No public nuclei template indexed
Weaponized: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors
A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 5 Nov 2026.
What to do
Affected software
| Product | Affected | Fixed in |
|---|---|---|
| ScriptaeScriptorium | Affected
| Fixed in– |
AI-suggested
Until a fix is available, restrict websocket consumer access to trusted users only and monitor for unusual subscription requests. Implement additional access control checks on the server side if possible to prevent unauthorized group_add calls.
Description
CVE-2026-18276 is a medium severity vulnerability in Scripta eScriptorium up to version 26.04.1. It involves missing authorization checks in the websocket consumer, allowing a remote authenticated user to subscribe to event streams of documents they should not access. This enables observation of another user's segmentation, transcription, import, export, and training activities. The vulnerability arises because object_cls and object_pk values in a join-room message are passed to group_add without verifying access rights.