CVE-2026-113583

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Source
https://cve.org/CVERecord?id=CVE-2026-113583
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113583.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-113583
Published
2026-10-20T11:35:29Z
Modified
2026-10-21T02:55:54Z
Severity
  • 5.3 (Medium) CVSS_V4 - CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:P/VC:N/VI:N/VA:N/SC:L/SI:L/SA:N CVSS Calculator
Summary
Cypht 2.0.0 through 2.12.2 Stored DOM XSS via externalResources.js
Details

Cypht webmail 2.0.0 through 2.12.2 contains a DOM-based cross-site scripting vulnerability that allows remote attackers to execute arbitrary JavaScript by crafting malicious alt text or URL values in an HTML email's external image tag when ALLOW_EXTERNAL_IMAGE_SOURCES is enabled. Attackers can send a specially crafted email so that when the victim opens it, the externalResources.js code builds the blocked-image notice using innerHTML with decoded email-derived values, triggering script execution in the victim's authenticated session to read mailboxes, send email, or change settings.

Database specific 
{
    "cna_assigner":  "VulnCheck",
    "cwe_ids":  [
        "CWE-79"
    ],
    "osv_generated_from":  "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/113xxx/CVE-2026-113583.json"
}
References

Affected packages

Git / github.com/cypht-org/cypht

Affected ranges

Type
GIT
Repo
https://github.com/cypht-org/cypht
Events
Introduced
492f6346849fb9bc5cdca5fb9cd88ae24c296fd7
Fixed
4caf0a64a4d4b1b2756ea05e3883aacac16babc2
Database specific
Show details 
{
    "extracted_events":  [
        {
            "range":  [
                {
                    "introduced":  "2.0.0"
                },
                {
                    "fixed":  "2.13.0"
                }
            ],
            "source":  "AFFECTED_FIELD",
            "strategy":  "StandardRange"
        }
    ]
}

Affected versions

v2.*
v2.0.0
v2.0.1
v2.1.0
v2.11.0
v2.12.0
v2.2.0
v2.5.0

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-113583.json"