CVE-2026-21433

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Source
https://cve.org/CVERecord?id=CVE-2026-21433
Import Source
https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21433.json
JSON Data
https://api.osv.dev/v1/vulns/CVE-2026-21433
Aliases
  • GHSA-6rwr-c8hc-mjj4
Published
2026-01-02T19:00:22.611Z
Modified
2026-08-12T03:51:18.059813430Z
Severity
  • 7.7 (High) CVSS_V3 - CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:N/A:N CVSS Calculator
Summary
Emlog vulnerable to Server-Side Request Forgery (SSRF)
Details

Emlog is an open source website building system. Versions up to and including 2.5.19 are vulnerable to server-side Out-of-Band (OOB) requests / SSRF via uploaded SVG files. An attacker can upload a crafted SVG to http[:]//emblog/admin/media[.]php which contains external resource references. When the server processes/renders the SVG (thumbnailing, preview, or sanitization), it issues an HTTP request to the attacker-controlled host. Impact: server-side SSRF/OOB leading to internal network probing and potential metadata/credential exposure. As of time of publication, no known patched versions are available.

Database specific 
{
    "cna_assigner": "GitHub_M",
    "osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/21xxx/CVE-2026-21433.json",
    "cwe_ids": [
        "CWE-918"
    ]
}
References

Affected packages

Git / github.com/emlog/emlog

Affected ranges

Type
GIT
Repo
https://github.com/emlog/emlog
Events
Introduced
0 Unknown introduced commit / All previous commits are affected
Last affected
4c6745bec558ff11e7a83e69b1d2441d8840802f
Database specific
Show details 
{
    "extracted_events": [
        {
            "introduced": "0"
        },
        {
            "last_affected": "2.5.19"
        }
    ],
    "source": [
        "AFFECTED_FIELD",
        "CPE_RANGE"
    ],
    "cpe": "cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*"
}

Affected versions

5.*
5.3.1
6.*
6.0.0
6.1.0
Other
ci
pro-test-01
pro-test-02
emlog_5.*
emlog_5.1.2
emlog_5.2.0
emlog_5.2.1
emlog_5.3.0
pro-1.*
pro-1.0.1
pro-1.0.2
pro-1.0.3
pro-1.0.4
pro-1.0.5
pro-1.0.6
pro-1.0.7
pro-1.0.8
pro-1.1.0
pro-1.1.1
pro-1.2.0
pro-1.2.1
pro-1.2.2
pro-1.3.0
pro-1.3.1
pro-1.4.0
pro-1.5.0
pro-1.5.0.new
pro-1.5.1
pro-1.6.0
pro-1.7.0
pro-1.7.1
pro-1.8.0
pro-1.9.0
pro-1.9.1
pro-1.9.2
pro-1.9.3
pro-2.*
pro-2.0.0
pro-2.0.1
pro-2.0.2
pro-2.0.3
pro-2.1.0
pro-2.1.1
pro-2.1.10
pro-2.1.11
pro-2.1.12
pro-2.1.13
pro-2.1.14
pro-2.1.15
pro-2.1.2
pro-2.1.3
pro-2.1.4
pro-2.1.5
pro-2.1.6
pro-2.1.7
pro-2.1.8
pro-2.1.9
pro-2.2.0
pro-2.2.1
pro-2.2.10
pro-2.2.11
pro-2.2.2
pro-2.2.3
pro-2.2.4
pro-2.2.5
pro-2.2.6
pro-2.2.7
pro-2.2.8
pro-2.2.9
pro-2.3.0
pro-2.3.1
pro-2.3.10
pro-2.3.11
pro-2.3.12
pro-2.3.13
pro-2.3.14
pro-2.3.15
pro-2.3.16
pro-2.3.17
pro-2.3.18
pro-2.3.2
pro-2.3.4
pro-2.3.5
pro-2.3.6
pro-2.3.7
pro-2.3.8
pro-2.3.9
pro-2.4.0
pro-2.4.1
pro-2.4.2
pro-2.4.3
pro-2.5.1
pro-2.5.10
pro-2.5.11
pro-2.5.12
pro-2.5.13
pro-2.5.14
pro-2.5.15
pro-2.5.16
pro-2.5.17
pro-2.5.18
pro-2.5.19
pro-2.5.2
pro-2.5.3
pro-2.5.4
pro-2.5.5
pro-2.5.6
pro-2.5.7
pro-2.5.8
pro-2.5.9

Database specific

source 
"https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-21433.json"