CVE-2026-100674

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Source
https://cve.org/CVERecord?id=CVE-2026-100674
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100674.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-100674
Aliases
  • GHSA-qcwh-c934-wrv5
Published
2026-09-26T13:23:37Z
Modified
2026-09-30T03:30:20Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:N/VI:L/VA:N/SC:N/SI:N/SA:N CVSS Calculator
Summary
stoatchat before 0.15.5 Username Validation Bypass via Unicode Sanitization
Details

stoatchat before 0.15.5 fails to revalidate usernames after Unicode sanitization, allowing attackers to create usernames with forbidden characters by submitting Unicode letters that transform into rejected characters. Attackers can bypass character allowlists and length limits to create reserved-name lookalikes, embed special characters, and exceed the 32-character storage limit.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-180"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/100xxx/CVE-2026-100674.json"
}
References

Affected packages

Git / github.com/stoatchat/stoatchat

Affected ranges

Type
GIT
Repo
https://github.com/stoatchat/stoatchat
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Fixed
dc31dd7e62c1f8806b663549700a4121537b9530
Database specific
Show details 
{
    "extracted_events":  [
        {
            "introduced":  "0"
        },
        {
            "fixed":  "0.15.5"
        }
    ],
    "source":  [
        "AFFECTED_FIELD",
        "DESCRIPTION"
    ]
}

Affected versions

0.*
0.1.0
0.2.0
0.2.10
0.2.5
0.2.6
0.2.7
0.2.8
0.2.9
0.3.0
0.3.0-rc.0
0.3.1
0.3.2
0.3.3
0.3.3-alpha.0
0.3.3-alpha.1
0.3.3-alpha.2
0.3.3-alpha.3
0.3.3-alpha.4
0.3.3-alpha.5
0.3.3-alpha.6
0.3.3-alpha.7
0.4.0
0.4.1
0.5.0
0.5.3
0.5.3-1
0.5.3-2
0.5.3-3
0.5.3-4
0.5.3-5
0.5.3-5-patch.1
0.5.3-5-patch.2
0.5.3-5-patch.3
0.5.3-alpha.10
0.5.3-alpha.11
0.5.3-alpha.13
0.5.3-alpha.14
0.5.3-alpha.15
0.5.3-alpha.16
0.5.3-alpha.6
0.5.3-alpha.7
0.5.3-alpha.8
0.5.3-alpha.9
0.5.3-patch.1
0.5.3-patch.2
0.5.3-rc.1
0.5.3-rc.2
0.5.3-rc.3
0.5.3-rc.4
0.5.3-rc.5
0.5.4
0.5.5
Other
20220606-1
20220609-1
20220610-1
20220610-2
20220611-1
20220612-1
20220612-2
20220612-3
20220612-4
20220614-1
20220620-1
20220621-1
20220623-1
20220710-1
20220714-1
20220715-1
20220718-1
20220726-1
20220814-1
20220901-1
20220902-1
20220903-1
20220912-1
20220918-1
20220918-2
20221023-1
20221023-2
20221119-1
20230603-1
20230603-2
20230603-3
20230604-1
20230611-1
20230611-2
20230611-3
20230611-4
20230611-5
20230615-1
20230702-1
20230704-1
20230810-1
20230810-2
20230810-3
20230826-1
20230827-1-beta
20230827-2-beta
20230827-3-beta
20230903-1-beta
20230903-2-beta
20230905-1-beta
20231026-01
20231028-1
20231028-2
20240206-1
20240210-1
20240210-2
20240212-1
20240407-1
20240408-1
20240408-2
20240408-3
20240408-4
20240516-1
20240604-1
20240609-1
20240611-1
20240611-2
20240611-3
20240615-1
20240619-1
20240620-1
20240620-2
20240621-1
20240623-1
20240625-1
20240625-2
20240626-1
20240629-1
20240710-1
20240805-1
20240829-1
20240829-2
20240829-3
20240830-1
20240909-1
20240909-2
20240929-1
20240929-2
20240929-3
20241001-1
20241002-1
20241002-2
20241002-3
20241002-4
20241002-5
20241002-6
20241002-7
20241024-1
20241128-1
20241128-2
20241128-3
20241212-1
20241213-1
20241220-1
20241222-1
20241222-2
20241222-3
20241222-4
20241222-5
20241222-6
20241226-1
20241227-1
20241227-2
20250210-1
20250224-1
20250225-1
20250225-2
20250402-1
20250402-2
20250509-1
20250509-2
20250509-3
20250509-4
20250509-5
20250509-6
20250509-7
20250509-8
20250510-1
20250513-1
20250513-2
20250514-1
20250515-1
20250530-1
20250608-1
20250730-1
20250807-1
20250818-1
20250923-1
20250923-2
20250923-3
20250923-5
20250923-6
delete
v0.*
v0.10.0
v0.10.1
v0.10.2
v0.10.3
v0.11.0
v0.11.1
v0.11.2
v0.11.3
v0.11.4
v0.11.5
v0.12.0
v0.12.1
v0.13.0
v0.13.1
v0.13.2
v0.13.3
v0.13.4
v0.13.5
v0.13.6
v0.13.7
v0.14.0
v0.14.1
v0.14.2
v0.14.3
v0.15.0
v0.15.1
v0.15.2
v0.15.3
v0.15.4
v0.8.8
v0.9.0
v0.9.1
v0.9.2
v0.9.3
v0.9.4

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-100674.json"