CVE-2026-73059 json
stoatchat before 0.15.0 Permission Bypass via message_fetch
published 3mo ago modified 2mo ago also EUVD-2026-59945 , GHSA-8qp4-h9xf-2vqr
Unreviewed: the maintainers' own advisory
Published by the maintainers on their GitHub repository stoatchat/stoatchat. GitHub has not reviewed it into the GitHub Advisory Database, so the affected packages and versions are the maintainers' word. Read the full advisory on GitHub.
- cvss
- 6.5
- version 3.1, CNA
- cisa kev
- Not listed
- not in CISA's catalog
- epss
- 0.4%
- EPSS 0.4% chance of exploitation in 30 days, percentile 31%
- public exploits
- 0
- none known
Summary
stoatchat before 0.15.0 contains a permission bypass vulnerability in the message_fetch route that checks only ViewChannel permission instead of requiring ReadMessageHistory. Attackers with ViewChannel access but ReadMessageHistory denied can retrieve individual message content by ID, bypassing the intended history restriction enforced by bulk read routes.
Patch / fix
- stoatchat stoatchat 0.15.0
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- Exploitation
- none
- Automatable
- no
- Technical impact
- partial
- Assessed
- 2mo ago
Exploit prediction
0.38% chance of exploitation in the next 30 days, higher than 31% of all scored CVEs (FIRST EPSS, 2026-11-11).
CVSS scores
| assigned by | version | score | vector |
|---|---|---|---|
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N |
| CNA | 3.1 | 6.5 | CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N |
| CNA | 4.0 | 7.1 | CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:N/VA:N/SC:N/SI:N/SA:N/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:X/AU:X/R:X/V:X/RE:X/U:X |
Affected products
- stoatchat stoatchat
Classification
- Weakness
-
- CWE-863 Incorrect Authorization
References
-
github.com
/stoatchat/stoatchat/security/advisories/GHSA-8qp4-h9xf-2vqr
vendor-advisory, advisory
-
vulncheck.com
/advisories/stoatchat-before-permission-bypass-via-message-fetch
third-party-advisory
Sources
- CVE List CVE-2026-73059
- NVD CVE-2026-73059
- Maintainer advisory GHSA-8qp4-h9xf-2vqr
Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.
The maintainers of stoatchat/stoatchat published their own advisory on GitHub. Reviewed sources take precedence over it.